Solar Stocks

Solar is the world's fastest-growing energy source, and this list covers the full photovoltaic value chain, from polysilicon and wafer manufacturers to inverters, trackers, project developers, and diversified utilities with major solar portfolios.

It spans listed solar companies across the US, China, Europe, and beyond, including pure-play solar manufacturers, specialist technology firms, and EPC contractors that build the world's solar capacity.

Market caps are updated monthly. Click any row to expand a full company overview.

Updated: May 2026
FX rates — May 2026: 🇨🇳 USDCNY 6.809  ·  🇨🇳 USDCNY 6.806  ·  🇪🇺 EURUSD 1.163  ·  🇭🇰 USDHKD 7.829  ·  🇳🇴 USDNOK 9.306
Company Ticker Mkt Cap ▼ Domicile Listing Segment
NextEra Energy
NEE $194.69B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Renewable IPP

NextEra Energy

Domicile: 🇺🇸 United States Segment: Renewable IPP

NextEra Energy operates one of the largest renewable energy fleets in the world through its competitive subsidiary NextEra Energy Resources, which owned approximately 7.8 GW of utility-scale solar across 31 US states at end-2024 and added 2.5 GW of new solar capacity that year. Its regulated Florida utility, FPL, operates a further 7 GW of solar within a vertically integrated 35 GW generation base, with new solar and battery additions a core component of FPL's 2026–2029 rate plan. The combined NEER and FPL platforms give NextEra a contracted backlog of roughly 30 GW and central exposure to US PPA demand from data-centre operators and corporate offtakers. Solar additions also benefit from federal investment and production tax credits.

🇺🇸 NYSE/NASDAQ

$194.69B

Renewable IPP

7.8 GW utility-scale solar (NEER); 7 GW solar at FPL; ~30 GW contracted backlog
Sungrow Power Supply
300274.SZ $46.57B 🇨🇳 China 🇨🇳 SZSE Inverters

Sungrow Power Supply

Domicile: 🇨🇳 China Segment: Inverters

Sungrow Power Supply is the world's largest PV inverter supplier by shipments, a position it has held according to S&P Global rankings, and the only manufacturer to top BNEF's annual inverter bankability survey five times. Solar inverters and related power conversion equipment generated CNY 29.1 billion of revenue in FY2024, alongside CNY 21 billion from a project development arm that builds and transfers utility-scale solar plants on a DBT or EPC basis. Energy storage has become the fastest-growing segment, contributing roughly a third of FY2024 revenue at 36.7% gross margins. The Shenzhen-listed company has near-equal domestic and overseas sales, with international margins running materially higher than China's hyper-competitive domestic inverter market.

🇨🇳 SZSE

$46.57B

Inverters

World's largest PV inverter supplier; CNY 29.1B inverter revenue FY2024; large-scale BESS segment
First Solar
FSLR $25.08B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Module Manufacturer

First Solar

Domicile: 🇺🇸 United States Segment: Module Manufacturer

First Solar is the only US-headquartered company among the world's largest solar module manufacturers, producing cadmium telluride (CdTe) thin-film panels through a fully integrated continuous process developed at its Ohio and California R&D labs. Its manufacturing footprint includes five operating US plants, with a sixth facility under construction in South Carolina and additional capacity in Vietnam, Malaysia, and India, targeting roughly 18 GW of US nameplate capacity by 2027. The company is the principal beneficiary of Section 45X advanced manufacturing tax credits, recognising $1.6 billion in 2025, plus FEOC-compliant restrictions that effectively disqualify Chinese-linked supply chains from US incentives. Year-end 2025 contracted backlog stood at 50.1 GW worth $15 billion, with US bookings priced around $0.36/W including domestic content adders.

🇺🇸 NYSE/NASDAQ

$25.08B

Module Manufacturer

CdTe thin-film; 18 GW US nameplate target by 2027; $1.6B 45X credits 2025; 50.1 GW backlog
Nextpower
NXT $21.42B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Tracker

Nextpower

Domicile: 🇺🇸 United States Segment: Tracker

Nextpower (formerly Nextracker, rebranded November 2025) is the world's largest supplier of single-axis solar trackers, with #1 global market share for over a decade and more than 40% share in the United States. Trackers, sold under the NX Horizon family including the terrain-following XTR and autonomous hail-stowing HailPro variants, generated approximately $3.0 billion of TTM revenue. The 2023 IPO from Flex Technologies has been followed by a strategic shift toward an integrated platform spanning trackers, foundations, eBOS, and software, supported by acquisitions including Bentek and Origami Solar. Management targets approximately 25–30% of project capex versus the historical 9% tracker share. The company holds a debt-free, investment-grade balance sheet and is a 45X manufacturing tax-credit beneficiary.

🇺🇸 NYSE/NASDAQ

$21.42B

Tracker

#1 global tracker market share >40% US share; NX Horizon / XTR / HailPro; 45X beneficiary; ~$3B TTM revenue
Ningbo Deye Technology
605117.SS $20.08B 🇨🇳 China 🇨🇳 SSE Inverters

Ningbo Deye Technology

Domicile: 🇨🇳 China Segment: Inverters

Ningbo Deye Technology is the world's largest supplier of residential energy storage inverters by revenue, with a 24.4% global market share in 2024 according to Frost & Sullivan, ahead of US-listed peers including Enphase. Listed on the Shanghai Stock Exchange, the company manufactures hybrid inverters and matched LFP batteries for residential and commercial-and-industrial solar-plus-storage systems, complemented by a smaller PV inverter business in which it ranks seventh globally. Distribution covers more than 150 countries, with overseas markets representing 76% of 9M 2025 revenue and particular strength across Europe, Africa, Latin America, and Southeast Asia. A new Malaysian production base is under construction to mitigate tariff and trade risk, and the company is pursuing a secondary listing in Hong Kong.

🇨🇳 SSE

$20.08B

Inverters

World's largest residential ESS inverter supplier 24.4% share (2024); hybrid inverters + LFP batteries; 76% international revenue
LONGi Green Energy
601012.SS $17.36B 🇨🇳 China 🇨🇳 SSE Wafer Module Manufacturer

LONGi Green Energy

Domicile: 🇨🇳 China Segment: Wafer Module Manufacturer

LONGi Green Energy is the world's largest solar company by production capacity, manufacturing monocrystalline silicon wafers, solar cells, and modules under its Hi-MO brand. The company pioneered the widespread adoption of high-efficiency monocrystalline technology in utility-scale solar and is now developing two distinct next-generation cell platforms: the Hi-MO X / Hi-MO X6 line using HPBC (Hybrid Passivated Back Contact) technology, and the Hi-MO 9 flagship module built on the second-generation HPBC 2.0 back-contact architecture, both targeting industry-leading conversion efficiency. LONGi has gigawatt-scale manufacturing across China and is expanding internationally to serve growing demand outside China's domestic market. Despite strong technology leadership, the company's revenue and margins have been pressured by the severe industry-wide module and polysilicon price deflation since late 2023.

🇨🇳 SSE

$17.36B

Wafer Module Manufacturer

World's largest solar company by capacity; Hi-MO X / Hi-MO 9 HPBC 2.0 back-contact modules
Enlight Renewable Energy
ENLT $11.96B Israel 🇺🇸 NYSE/NASDAQ Renewable IPP

Enlight Renewable Energy

Domicile: Israel Segment: Renewable IPP

Enlight Renewable Energy is an Israeli-headquartered, Nasdaq and Tel Aviv dual-listed renewable IPP that develops, finances, builds, owns, and operates utility-scale solar, wind, and battery storage projects across Israel, the United States, Europe, the Middle East, and North Africa. The portfolio comprises approximately 20 GW of multi-technology generation capacity and 35.8 GWh of energy storage at end-2025, with the United States expected to grow to roughly 59% of installed capacity by year-end 2026. Flagship US assets include the 364 MW Atrisco solar-plus-storage complex in New Mexico, the 600 MW Snowflake A project in Arizona, and the 1.2 GW CO Bar Complex with 4.0 GWh of storage. Enlight typically retains long-term equity in its projects rather than selling them, generating contracted revenue under multi-decade PPAs.

🇺🇸 NYSE/NASDAQ

$11.96B

Renewable IPP

20 GW multi-tech portfolio; 35.8 GWh storage pipeline; Atrisco + Snowflake A + CO Bar US projects
Tongwei Co
600438.SS $10.74B 🇨🇳 China 🇨🇳 SSE Polysilicon Solar Cells

Tongwei Co

Domicile: 🇨🇳 China Segment: Polysilicon Solar Cells

Tongwei Co. is one of the world's largest producers of high-purity polysilicon and high-efficiency solar cells, with its polysilicon division operating some of the lowest-cost production facilities globally. The company has expanded downstream into solar module manufacturing as part of a vertical integration strategy aimed at becoming a full-stack solar manufacturer. Its combined position as a top polysilicon supplier and leading cell producer gives it significant scale and cost advantages, though margins across the value chain have been severely compressed by industry oversupply.

🇨🇳 SSE

$10.74B

Polysilicon Solar Cells

Top polysilicon + solar cells; lowest-cost production; expanding into modules
Chint Electrics
601877 $10.57B 🇨🇳 China 🇨🇳 China Module Manufacturer Inverters

Chint Electrics

Domicile: 🇨🇳 China Segment: Module Manufacturer Inverters

Chint Electrics (CHINT Group) is a Chinese electrical equipment manufacturer and energy company with operations spanning low-voltage electrical products, smart grid infrastructure, solar inverters, and project development. CHINT Power Systems (CPS) is a leading solar inverter brand, supplying string and central inverters to utility-scale projects globally, particularly across emerging markets in Africa, Latin America, and Southeast Asia. The company's broad electrical equipment portfolio gives it strong distribution relationships with utilities and EPCs in markets where its inverters compete on cost and reliability. CHINT's diversification across power distribution hardware and solar inverters provides some insulation from single-segment price pressure.

🇨🇳 China

$10.57B

Module Manufacturer Inverters

CHINT Power Systems (CPS) global inverter brand; broad electrical equipment distribution
Brookfield Renewable Partners
BEP $10.42B Bermuda 🇺🇸 NYSE/NASDAQ Renewable IPP

Brookfield Renewable Partners

Domicile: Bermuda Segment: Renewable IPP

Brookfield Renewable Partners is the listed renewable platform of Brookfield Asset Management, operating ~47 GW of installed capacity across hydroelectric, wind, utility-scale solar, distributed energy, and storage, with a development pipeline above 200 GW. Solar accounts for roughly 16% of proportionate FFO, anchored by frameworks with hyperscalers including a 10.5+ GW renewable framework with Microsoft. The 2024 acquisition of French developer Neoen materially scaled BEP's solar and battery footprint, and management has accelerated solar and BESS bookings since. Approximately 90% of generation is contracted under long-term PPAs, and the partnership funds its growth through a combination of asset recycling, co-investment with Brookfield's transition funds, and capital markets. BEPC offers an exchangeable corporate-share alternative to the LP units.

🇺🇸 NYSE/NASDAQ

$10.42B

Renewable IPP

~47 GW installed capacity; 200 GW+ pipeline; 10.5 GW Microsoft framework; Neoen acquisition
AES Corporation
AES $10.32B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Renewable IPP

AES Corporation

Domicile: 🇺🇸 United States Segment: Renewable IPP

AES Corporation is a US-based global power company with operations in solar, wind, natural gas, and battery storage across the Americas, Europe, and Asia-Pacific. Through its AES Clean Energy division, the company is one of the fastest-growing utility-scale renewable energy developers in the United States, with a large pipeline of solar and storage projects. AES co-founded Fluence Energy with Siemens, which has become one of the world's largest grid-scale battery storage integrators. The company's diversified global portfolio and clean energy transition strategy position it as a significant but complex vehicle for solar and broader energy transition exposure.

🇺🇸 NYSE/NASDAQ

$10.32B

Renewable IPP

AES Clean Energy large US renewable pipeline; co-founder of Fluence Energy BESS integrator
Enphase Energy
ENPH $6.97B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Inverters

Enphase Energy

Domicile: 🇺🇸 United States Segment: Inverters

Enphase Energy is the world's leading supplier of microinverter-based residential solar and battery systems, having shipped approximately 86 million microinverters across 5.1 million installations in 160+ countries. The microinverter architecture, which converts DC to AC at the individual panel level, is the core differentiator and supports a vertically integrated platform that includes IQ Battery LFP storage, the IQ EV Charger, the Enlighten monitoring cloud, and the Solargraf installer software. Enphase holds approximately 50% of the US residential microinverter market, with the United States accounting for approximately 81% of FY2025 revenue and residential solar as the core end market. Europe and Australia are the principal international growth markets. The company is now expanding into US small-commercial solar via its new GaN-based IQ9 microinverter, which began shipping in late 2025.

🇺🇸 NYSE/NASDAQ

$6.97B

Inverters

~50% US residential microinverter share; IQ Battery LFP; IQ9 GaN microinverter; 86M units shipped
Primoris Services Corporation
PRIM $6.15B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ EPC / Construction

Primoris Services Corporation

Domicile: 🇺🇸 United States Segment: EPC / Construction

Primoris Services Corporation is one of the largest utility-scale solar EPC contractors in the United States, with solar revenue rising from approximately $200 million in 2020 to $3.0 billion in 2025. Solar EPC and battery-storage construction sit within its Energy segment alongside natural gas generation, pipelines, and heavy civil work; the company also operates a Utilities segment focused on electric and gas distribution. Total backlog reached $11.9 billion at year-end 2025, including roughly $7 billion of recurring Master Service Agreement revenue. Customers include large solar developers such as Intersect Power, Avantus, and D.E. Shaw Renewable Investments, alongside investor-owned utilities. Management has guided to a slowdown in renewables revenue growth in 2026 following 2025 project pull-forward.

🇺🇸 NYSE/NASDAQ

$6.15B

EPC / Construction

$3.0B solar EPC revenue 2025; $11.9B total backlog; utility-scale solar + BESS EPC
Trina Solar
688599.SS $5.94B 🇨🇳 China 🇨🇳 SSE Module Manufacturer

Trina Solar

Domicile: 🇨🇳 China Segment: Module Manufacturer

Trina Solar is one of China's largest vertically integrated solar companies, manufacturing monocrystalline and bifacial solar modules under the Vertex brand. The company was previously listed on the NYSE before going private and relisting on Shanghai's STAR Market, and is one of the world's top five module shippers annually with strong positions in both utility and distributed solar markets. Trina has developed its own tracker and energy storage businesses alongside its core module manufacturing, and operates a global distribution network across Europe, the Americas, and Asia-Pacific. Trina Solar is also one of the key developers of ultra-large-format modules (210mm+ wafer) that have become the industry standard for new utility-scale projects.

🇨🇳 SSE

$5.94B

Module Manufacturer

Top-5 global module shipper; Vertex brand; 210mm+ wafer developer; trackers + storage diversification
TCL Zhonghuan
002129.SZ $5.84B 🇨🇳 China 🇨🇳 SZSE Wafer Module Manufacturer

TCL Zhonghuan

Domicile: 🇨🇳 China Segment: Wafer Module Manufacturer

TCL Zhonghuan Renewable Energy (TZS) is a Chinese manufacturer of large-format monocrystalline silicon wafers (the key intermediate product in the crystalline silicon solar supply chain) and one of the world's top two wafer producers by volume. The company produces G12 (210mm) ultra-large wafers that have become the industry standard for utility-scale solar modules, and also manufactures finished solar modules. TCL Technology Group, the consumer electronics and semiconductor company, is a major shareholder, bringing manufacturing process expertise to the wafer business. Like other upstream solar suppliers, TCL Zhonghuan has faced severe margin pressure from the polysilicon and wafer price collapse since 2023.

🇨🇳 SZSE

$5.84B

Wafer Module Manufacturer

Top-2 global wafer producer; G12 (210mm) ultra-large wafers; TCL Technology shareholder
Clearway Energy
CWEN $5.66B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Renewable IPP

Clearway Energy

Domicile: 🇺🇸 United States Segment: Renewable IPP

Clearway Energy is one of the largest publicly listed clean energy yieldcos in the United States, owning approximately 12.9 GW of generating capacity across 27 states, comprising roughly 3.0 GW of utility-scale solar, 3.7 GW of wind, battery storage, and 2.8 GW of contracted natural gas peaking and combined-cycle plants. Approximately 98% of 2025 generation came from renewables and storage. The company is sponsored by Clearway Energy Group, jointly owned by Global Infrastructure Partners and TotalEnergies, which operates a 29 GW development pipeline that feeds drop-down acquisitions to CWEN. Hyperscaler PPA wins with Google and Microsoft anchored 2025 bookings, and Clearway is positioning itself as a preferred clean energy supplier to data centre operators through both grid-connected and co-located projects.

🇺🇸 NYSE/NASDAQ

$5.66B

Renewable IPP

12.9 GW capacity; 3.0 GW utility solar; 29 GW sponsor pipeline; Google + Microsoft PPA wins
Ginlong Technologies (Solis)
300763.SZ $5.65B 🇨🇳 China 🇨🇳 SZSE Inverters

Ginlong Technologies (Solis)

Domicile: 🇨🇳 China Segment: Inverters

Ginlong Technologies (Solis) is a Chinese manufacturer of solar string inverters, hybrid inverters, and monitoring systems under the Solis brand, with a strong focus on residential and commercial markets internationally. The company has deployed over 100 GW of Solis inverters cumulatively and distributes its products through a network of installers and distributors across Europe, Australia, North America, and Asia. Ginlong's hybrid inverter product line supporting battery storage has been a key growth driver, particularly in European markets with strong residential storage incentives. Its focus on the international market outside China differentiates it from inverter peers who are more reliant on domestic Chinese solar demand.

🇨🇳 SZSE

$5.65B

Inverters

Solis brand; 100 GW cumulative deployed; residential/C&I string and hybrid inverters; European focus
HA Sustainable Infrastructure Capital
HASI $5.26B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Clean Energy Finance

HA Sustainable Infrastructure Capital

Domicile: 🇺🇸 United States Segment: Clean Energy Finance

HA Sustainable Infrastructure Capital (rebranded from Hannon Armstrong in June 2024) is a US-listed specialty finance company that invests in sustainable infrastructure across three end markets: behind-the-meter assets including residential solar, energy storage, and efficiency; grid-connected utility-scale solar, wind, and storage; and renewable fuels and transport. Total managed assets reached $16.1 billion at end-2025, with a $7.6 billion on-balance-sheet portfolio yielding 8.8%. The company revoked its REIT election in 2024 and now operates as a C-corporation. A 50/50 co-investment vehicle with KKR (CarbonCount Holdings 1) provides $3 billion of committed equity to back larger transactions, including the $1.2 billion SunZia wind investment. HASI's CarbonCount scoring framework measures avoided emissions per dollar invested.

🇺🇸 NYSE/NASDAQ

$5.26B

Clean Energy Finance

$16.1B managed assets; $7.6B on-balance-sheet portfolio; 50/50 KKR CarbonCount co-investment vehicle
JA Solar Technology
002459.SZ $5.04B 🇨🇳 China 🇨🇳 SZSE Module Manufacturer

JA Solar Technology

Domicile: 🇨🇳 China Segment: Module Manufacturer

JA Solar Technology is one of China's and the world's largest solar module manufacturers, with annual capacity exceeding 50 GW and global shipments across utility, commercial, and residential markets in over 130 countries. The company's DeepBlue 4.0 Pro TOPCon module is among its flagship products, incorporating N-type cell technology for higher efficiency and better low-light performance. JA Solar operates an international manufacturing strategy with plants in Southeast Asia and the Middle East to diversify supply chain risk. Despite industry-wide price deflation, JA Solar's scale and manufacturing cost leadership have allowed it to maintain its position among the top three global module suppliers.

🇨🇳 SZSE

$5.04B

Module Manufacturer

50 GW+ annual capacity; DeepBlue 4.0 Pro TOPCon; top-3 global module supplier; SE Asia + ME mfg
Aiko Solar Energy
600732.SS $4.16B 🇨🇳 China 🇨🇳 SSE Solar Cells Module Manufacturer

Aiko Solar Energy

Domicile: 🇨🇳 China Segment: Solar Cells Module Manufacturer

Aiko Solar Energy is a Chinese solar company known for pioneering the ABC (All Back Contact) high-efficiency cell technology, which achieves some of the highest module conversion efficiencies commercially available by placing all electrodes on the rear of the cell to eliminate front-side shading losses. Listed on the Shanghai Stock Exchange, Aiko has positioned itself as a premium technology provider in a market dominated by volume-focused module manufacturers. The company has invested significantly in expanding its ABC cell production capacity, targeting premium utility and distributed solar applications where efficiency commands a price premium. Its technology differentiation distinguishes it in an industry where most players compete primarily on cost.

🇨🇳 SSE

$4.16B

Solar Cells Module Manufacturer

ABC (All Back Contact) high-efficiency cell technology; premium efficiency positioning
Flat Glass Group
6865.HK $4.13B 🇨🇳 China 🇨🇳 HKEX Solar Glass

Flat Glass Group

Domicile: 🇨🇳 China Segment: Solar Glass

Flat Glass Group is a Hong Kong-listed manufacturer of solar photovoltaic glass and architectural flat glass products, serving Chinese module manufacturers and the construction industry. The company's solar glass products include AR-coated low-iron tempered glass used in crystalline silicon and thin-film PV module encapsulation, competing primarily with Xinyi Solar in the Chinese solar glass market. Flat Glass has been expanding its solar glass capacity in line with growth in Chinese solar module production. While smaller than Xinyi Solar, it maintains a significant position in the Chinese domestic solar glass supply chain.

🇨🇳 HKEX

$4.13B

Solar Glass

AR-coated low-iron tempered PV glass; expanding capacity alongside Chinese module production
GoodWe Technologies
688390.SS $4.13B 🇨🇳 China 🇨🇳 SSE Inverters

GoodWe Technologies

Domicile: 🇨🇳 China Segment: Inverters

GoodWe Technologies is a China-based manufacturer of solar inverters for residential, commercial, and industrial applications, with a particular focus on hybrid inverters that integrate battery storage management. Listed on Shanghai's STAR Market, GoodWe has built a strong international distribution network targeting European, Australian, and emerging market residential solar customers with its cost-competitive string and hybrid inverter range. The company has been a significant beneficiary of the European residential solar boom, particularly in countries with strong solar-plus-storage economics. Its expanding product range into EV chargers and energy management systems extends its market beyond pure inverters.

🇨🇳 SSE

$4.13B

Inverters

Residential/C&I hybrid inverters; European + Australian distribution; EV charger + energy mgmt expansion
GCL System Integration Technology
002506.SZ $4.01B 🇨🇳 China 🇨🇳 SZSE Module Manufacturer Wafer

GCL System Integration Technology

Domicile: 🇨🇳 China Segment: Module Manufacturer Wafer

GCL System Integration Technology (GCL-SI, 002506.SZ) is a Shenzhen-listed solar module manufacturer and member of China's GCL Group, distinct from the polysilicon entity GCL Technology Holdings (3800.HK). GCL-SI manufactures crystalline silicon solar modules and has significant silicon wafer production alongside its module business, making it a vertically integrated mid-stream player within the GCL Group structure. The company serves both domestic Chinese and international solar markets, competing in the highly competitive mass-market module segment. Like peers, GCL-SI has faced severe margin pressure from industry-wide polysilicon and module price deflation since 2023.

🇨🇳 SZSE

$4.01B

Module Manufacturer Wafer

GCL Group member; vertically integrated mid-stream module + wafer; mass-market segment
Grenergy Renovables
GRE.MC $3.86B 🇪🇸 Spain 🇪🇸 Spain Renewable IPP

Grenergy Renovables

Domicile: 🇪🇸 Spain Segment: Renewable IPP

Grenergy Renovables is a Madrid-listed independent renewable energy developer and IPP with a portfolio of utility-scale solar and wind projects across Spain, Chile, Colombia, and Peru. The company has developed a particularly strong position in Latin American solar markets alongside its Spanish domestic portfolio. Grenergy also develops battery energy storage projects as a complement to its solar and wind assets. Its relatively small market cap reflects its development-stage growth profile, with a project pipeline significantly larger than its current operational portfolio.

🇪🇸 Spain

$3.86B

Renewable IPP

Utility-scale solar + wind + BESS; Spain + Chile + Colombia + Peru portfolio
SolarEdge Technologies
SEDG $3.76B Israel 🇺🇸 NYSE/NASDAQ Inverters

SolarEdge Technologies

Domicile: Israel Segment: Inverters

SolarEdge Technologies designs DC-optimised inverter systems for residential and commercial-and-industrial solar, comprising module-level Power Optimisers, string inverters, and DC-coupled batteries. The Israeli-founded, Nasdaq-listed company has shipped roughly 56 GW of systems to over 145 countries since 2010, with the US and Europe accounting for ~90% of revenue. After severe inventory and demand challenges in 2023–2024, SolarEdge regained the #1 US residential inverter share position in 2025 and reported five consecutive quarters of gross-margin expansion to 23.3% in Q4 2025. The company began shipping its next-generation Nexis platform in 2026 and is developing a Solid State Transformer for AI data-centre 800V DC architectures, in partnership with Infineon, that targets initial customer engagement from 2027.

🇺🇸 NYSE/NASDAQ

$3.76B

Inverters

DC-optimised inverter + Power Optimisers; regained #1 US residential inverter share 2025; Nexis platform
GCL Technology Holdings
3800.HK $3.72B 🇨🇳 China 🇨🇳 HKEX Polysilicon Wafer

GCL Technology Holdings

Domicile: 🇨🇳 China Segment: Polysilicon Wafer

GCL Technology Holdings is the Hong Kong-listed entity of China's largest polysilicon producer, GCL Group, manufacturing granular polysilicon using fluidised bed reactor (FBR) technology at plants in Xinjiang and Inner Mongolia. The company is consistently among the top two global polysilicon producers by volume, with its low-cost production scale historically setting global polysilicon market reference prices. GCL Technology also produces silicon wafers and has invested in downstream module manufacturing through its affiliates. The severe polysilicon price correction since late 2023 has significantly impacted revenues and profitability across the GCL solar materials businesses.

🇨🇳 HKEX

$3.72B

Polysilicon Wafer

Largest Chinese polysilicon producer; FBR granular polysilicon; Xinjiang + Inner Mongolia plants
Solaria Energía y Medio Ambiente
SLR.MC $3.69B 🇪🇸 Spain 🇪🇸 Spain Renewable IPP

Solaria Energía y Medio Ambiente

Domicile: 🇪🇸 Spain Segment: Renewable IPP

Solaria Energía y Medio Ambiente is a Spanish independent renewable energy company operating a portfolio of utility-scale solar power plants primarily across Spain. The company focuses on long-term PPA-contracted solar generation in the Iberian market, where its development expertise and land rights pipeline give it a competitive advantage. Solaria has been selectively growing beyond Spain into new European markets. Its concentrated Iberian exposure provides simplicity and local expertise but also geographic concentration risk.

🇪🇸 Spain

$3.69B

Renewable IPP

Utility-scale solar PPA portfolio; Iberian market focus; selectively expanding in Europe
Xinyi Solar Holdings
968.HK $3.49B 🇨🇳 China 🇨🇳 HKEX Solar Glass

Xinyi Solar Holdings

Domicile: 🇨🇳 China Segment: Solar Glass

Xinyi Solar Holdings is one of the world's two or three dominant solar photovoltaic glass manufacturers, with operational melting capacity of 21,400 tonnes per day at end-2025. Solar glass accounted for 85.5% of FY2025 revenue, with the company supplying ultra-clear low-iron tempered glass to the largest module manufacturers including LONGi, JinkoSolar, and Trina Solar. Manufacturing is anchored at the Wuhu industrial zone in China, with overseas production in Malaysia and a new base in Indonesia where the first 1,200 t/d line commenced operation in January 2026. Margins have been compressed by a sustained PV glass price downturn, prompting Xinyi to suspend 5,600 t/d of capacity. The company also operates 6.2 GW of solar farms in China, primarily through listed subsidiary Xinyi Energy.

🇨🇳 HKEX

$3.49B

Solar Glass

21400 t/d melting capacity; supply to LONGi + JinkoSolar + Trina; Malaysia + Indonesia production
Sunrun
RUN $3.34B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Residential Solar

Sunrun

Domicile: 🇺🇸 United States Segment: Residential Solar

Sunrun is the largest US residential solar and battery storage company by fleet size, with 997,000 subscribers and 1.17 million total customers as of end-2025, and 8.4 GW of installed solar capacity. The company operates a 20–25 year lease and PPA model with no upfront cost to homeowners, financed through tax equity, asset-backed securities, and the long-term cash flows of its contracted base. The Brightbox storage offering is an add-on product, and storage attach rates reached 71% in Q4 2025, supporting a 4.0 GWh networked battery fleet that powers the largest distributed power plant in the United States. The 25D residential tax credit's expiration at end-2025 under the One Big Beautiful Bill Act is a structural tailwind for Sunrun's third-party-ownership model.

🇺🇸 NYSE/NASDAQ

$3.34B

Residential Solar

Largest US residential solar + storage; 997K subscribers; 8.4 GW installed; 71% Q4 2025 storage attach
Sineng Electric
300827.SZ $3.17B 🇨🇳 China 🇨🇳 SZSE Inverters

Sineng Electric

Domicile: 🇨🇳 China Segment: Inverters

Sineng Electric is a Chinese power-electronics manufacturer specialising in solar PV inverters and energy-storage power conversion systems, ranked the world's #4 PV inverter supplier by shipments and a BloombergNEF Tier 1 inverter manufacturer. The product portfolio spans residential string inverters, commercial-and-industrial string inverters, large central inverters for utility-scale solar, and PCS for grid-scale battery storage, alongside power-quality controllers and active power filters. Sineng operates manufacturing bases in Wuxi and Wuzhong (China) and Bangalore (India), with the India facility providing access to the South Asian market. The company complements Sungrow, Deye, GoodWe, Ginlong, and Hoymiles as a credible second-tier Chinese inverter peer, with growing presence across Asia-Pacific, the Middle East, Africa, Europe, and the Americas.

🇨🇳 SZSE

$3.17B

Inverters

#4 global PV inverter by shipments; BNEF Tier 1; utility central inverters + C&I + BESS PCS; India mfg
Risen Energy
300118.SZ $3.12B 🇨🇳 China 🇨🇳 SZSE Module Manufacturer

Risen Energy

Domicile: 🇨🇳 China Segment: Module Manufacturer

Risen Energy is a Chinese manufacturer of monocrystalline and bifacial solar modules for residential, commercial, and utility-scale applications, with manufacturing facilities in Ningbo and overseas plants to serve international markets. The company produces high-efficiency Titan series bifacial modules and has been expanding its large-format module production alongside global peers. Risen supplies modules to solar projects across Europe, Australia, Latin America, and the Middle East, maintaining a broad international customer base. While smaller than the top-tier Chinese module manufacturers, Risen has maintained consistent international module shipments and developed dedicated manufacturing capacity outside China to reduce trade barrier exposure.

🇨🇳 SZSE

$3.12B

Module Manufacturer

Titan bifacial modules; Ningbo mfg + international plants; broad Europe + APAC + LATAM distribution
Solax Power
688717.SS $2.75B 🇨🇳 China 🇨🇳 SSE Inverters

Solax Power

Domicile: 🇨🇳 China Segment: Inverters

Solax Power Network Technology is a Chinese manufacturer of hybrid solar inverters and battery storage systems with a strong focus on the European residential solar-plus-storage market. Listed on the Shanghai Stock Exchange (STAR Market), Solax has built a significant European distribution presence through its X1 and X3 inverter series, which are widely sold through solar installers in Germany, the UK, Netherlands, and other European markets. The company's inverters support a wide range of lithium battery systems for residential self-consumption and backup power applications. Its European market focus differentiates it from Chinese inverter peers more reliant on domestic Chinese solar volumes.

🇨🇳 SSE

$2.75B

Inverters

X1/X3 hybrid inverter series; European residential storage focus; Germany + UK + Netherlands distribution
SMA Solar Technology
S92.DE $2.55B 🇩🇪 Germany 🇩🇪 ETR Inverters

SMA Solar Technology

Domicile: 🇩🇪 Germany Segment: Inverters

SMA Solar Technology is a German company and Europe's largest manufacturer of solar inverters, with a 40-year history of innovation in power electronics for photovoltaic systems. The company produces string, central, and hybrid inverters for residential, commercial, and utility-scale solar, as well as EV charging and battery storage management products. SMA's technology leadership, global service network, and premium brand in European markets give it a strong position, though it faces intense Chinese price competition particularly in the mass-market string inverter segment. Its Made-in-Germany manufacturing and strong service network support its premium positioning in European installer and utility markets.

🇩🇪 ETR

$2.55B

Inverters

Europe's largest solar inverter maker; 40-year history; string + central + hybrid; Made-in-Germany premium
Hoymiles Power Electronics
688032.SS $2.01B 🇨🇳 China 🇨🇳 SSE Inverters

Hoymiles Power Electronics

Domicile: 🇨🇳 China Segment: Inverters

Hoymiles Power Electronics is a Chinese manufacturer of microinverters and power optimisers for residential and commercial rooftop solar, competing directly with Enphase Energy in the module-level power electronics segment. Listed on Shanghai's STAR Market, Hoymiles has established itself as the leading Chinese microinverter brand internationally, with products sold in Europe, North America, Australia, and emerging markets. Its DTU communication units and monitoring platforms provide system owners with panel-level visibility and remote management capabilities. The microinverter segment commands premium pricing versus string inverters, and Hoymiles has been gaining market share as customers in high-shade or complex-roof environments seek module-level optimisation.

🇨🇳 SSE

$2.01B

Inverters

Leading Chinese microinverter brand; DTU panel-level monitoring; residential + C&I; competing with Enphase
ReNew Energy Global
RNW $1.95B India 🇺🇸 NYSE/NASDAQ Renewable IPP

ReNew Energy Global

Domicile: India Segment: Renewable IPP

ReNew Energy Global is India's largest independent renewable energy company, operating approximately 11 GW of solar, wind, and hybrid power projects under long-term power purchase agreements primarily with Indian central and state government utilities. Listed on Nasdaq via a 2021 SPAC merger, ReNew provides international investors with direct access to India's rapidly growing renewable energy market through a dollar-denominated equity vehicle. The company has been expanding into green hydrogen and is developing hybrid solar-wind-storage projects aligned with India's 24×7 clean power goals. Its large scale, contracted revenue base, and first-mover advantage in Indian utility-scale renewables make it the leading internationally accessible Indian renewable energy stock.

🇺🇸 NYSE/NASDAQ

$1.95B

Renewable IPP

India's largest renewable IPP; ~11 GW solar + wind + hybrid; 24×7 clean power + green hydrogen
Scatec
SCATC.OL $1.79B 🇳🇴 Norway 🇳🇴 Norway Renewable IPP

Scatec

Domicile: 🇳🇴 Norway Segment: Renewable IPP

Scatec is a Norwegian independent renewable energy developer and power producer operating utility-scale solar, wind, hydro, and battery storage projects across Africa, the Middle East, Asia, and Europe. The company specialises in markets with strong solar resources and emerging-market growth potential, where it has developed a track record of project finance and execution. Scatec's installed capacity has grown to approximately 5 GW with a significant development pipeline, and it maintains a vertically integrated model combining development, construction, and long-term ownership. The company's emerging market focus distinguishes it from European IPPs more concentrated in mature markets.

🇳🇴 Norway

$1.79B

Renewable IPP

~5 GW installed; Africa + ME + Asia + Europe emerging market solar + wind + hydro + BESS IPP
Shoals Technologies Group
SHLS $1.73B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Racking / BOS

Shoals Technologies Group

Domicile: 🇺🇸 United States Segment: Racking / BOS

Shoals Technologies Group designs and manufactures electrical balance-of-system (eBOS) solutions for utility-scale solar, battery storage, and increasingly data-centre power infrastructure. Its patented Big Lead Assembly trunk-bus system replaces traditional combiner boxes and copper wire-and-conduit with above-ground aluminium feeder cables and prefabricated harnesses, reducing wire runs by up to 95%. Shoals' solutions have been deployed across more than 93 GW of global solar projects, with a record total backlog and awarded orders of $747.6 million at end-2025. The company has signed initial Master Service Agreements with data-centre integrators and booked $18 million in early data-centre and grid-firming orders. A wire-insulation shrinkback warranty issue has been a recurring near-term cost headwind under active litigation against the wire supplier.

🇺🇸 NYSE/NASDAQ

$1.73B

Racking / BOS

Big Lead Assembly eBOS; 93 GW+ deployed; $747.6M backlog; data-centre eBOS expansion
Xinyi Energy Holdings
3868.HK $1.40B 🇨🇳 China 🇨🇳 HKEX Renewable IPP

Xinyi Energy Holdings

Domicile: 🇨🇳 China Segment: Renewable IPP

Xinyi Energy Holdings is a Hong Kong-listed pure-play solar farm operator in mainland China, owning and managing approximately 16 utility-scale ground-mounted solar power plants with around 1.5 GW of installed capacity. The company sells the electricity it produces to provincial subsidiaries of the two Chinese state-owned grid enterprises under long-term tariff arrangements. Xinyi Energy is a controlled subsidiary of Xinyi Solar Holdings (0968.HK), spun out as a yieldco in 2019 to provide investors with separately listed exposure to operating Chinese solar assets, and the parent retains majority ownership and management oversight. The company has filed for a separate PRC infrastructure REIT listing of selected solar farm assets, which would represent a strategic spin-off intended to recycle capital and expand the operating platform.

🇨🇳 HKEX

$1.40B

Renewable IPP

~1.5 GW Chinese ground-mount solar farms; Xinyi Solar subsidiary; PRC infrastructure REIT filing
Array Technologies
ARRY $1.38B 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Tracker

Array Technologies

Domicile: 🇺🇸 United States Segment: Tracker

Array Technologies is one of the largest global suppliers of single-axis solar trackers for utility-scale projects, with its DuraTrack platform and patented autonomous wind-stow technology installed across thousands of projects worldwide. The 2022 acquisition of STI Norland expanded its presence in Europe and Latin America, and the August 2025 acquisition of foundation-solutions provider APA added an adjacent product line that is often deployed alongside trackers. The order book stood at a record $2.2 billion at end-2025, with a Q4 book-to-bill above 2x, reflecting recovery from significant US share loss in 2023–24. Array is positioned as a 100% domestic-content tracker manufacturer eligible for IRA Section 45X credits, and its primary listed competitor in the US is Nextpower.

🇺🇸 NYSE/NASDAQ

$1.38B

Tracker

DuraTrack platform; APA foundation acquisition Aug 2025; $2.2B order book; 45X domestic content tracker
JinkoSolar
JKS $1.29B 🇨🇳 China 🇺🇸 NYSE/NASDAQ Module Manufacturer

JinkoSolar

Domicile: 🇨🇳 China Segment: Module Manufacturer

JinkoSolar is one of the world's largest solar module manufacturers, with over 400 GW of cumulative module shipments delivered to nearly 200 countries since inception, and FY2026 shipment guidance of 75–85 GW. Its Tiger Neo TOPCon N-type product line is the best-selling module series in industry history, accounting for over 99% of 2025 shipments, with the third-generation Tiger Neo 3.0 producing modules of 655–670W. Operations are vertically integrated across silicon ingots, wafers, cells, and modules, with manufacturing in China, Vietnam, the United States, and a planned Saudi Arabian joint venture with PIF. JinkoSolar is dual-listed via NYSE ADRs (JKS) and Shanghai STAR Market shares (688223.SS), with the principal operating subsidiary 54.16% owned by the Cayman holdco.

🇺🇸 NYSE/NASDAQ

$1.29B

Module Manufacturer

400 GW cumulative shipments; Tiger Neo TOPCon #1 selling module; 75-85 GW 2026 guidance; NYSE + STAR dual-listed
Daqo New Energy
DQ $1.23B 🇨🇳 China 🇺🇸 NYSE/NASDAQ Polysilicon

Daqo New Energy

Domicile: 🇨🇳 China Segment: Polysilicon

Daqo New Energy is one of the world's largest and lowest-cost producers of solar-grade polysilicon, with 305,000 MT of nameplate capacity split between Xinjiang (105,000 MT) and Inner Mongolia (200,000 MT). It manufactures using the modified Siemens process and operates a debt-free balance sheet. The principal operating subsidiary, Xinjiang Daqo, is separately listed on the Shanghai STAR Market, with the NYSE-listed ADR holding company owning 72.8%. Industry-wide oversupply has driven polysilicon prices well below cash cost since 2024, and Daqo has been deeply loss-making since then. The company exited wafer manufacturing in 2018 to focus on its core polysilicon business, and is now operating at approximately 57% of nameplate capacity pending market normalisation under China's "anti-involution" supply discipline policy.

🇺🇸 NYSE/NASDAQ

$1.23B

Polysilicon

305000 MT polysilicon capacity (Xinjiang + Inner Mongolia); debt-free; NYSE ADR + Shanghai STAR dual-listed
Arctech Solar
688408.SS $1.23B 🇨🇳 China 🇨🇳 SSE Tracker

Arctech Solar

Domicile: 🇨🇳 China Segment: Tracker

Arctech Solar is a Chinese manufacturer of single-axis and fixed-tilt solar tracking and racking systems for utility-scale solar farms, with particular strength in high-wind-speed and extreme climate environments. Listed on Shanghai's STAR Market, Arctech has deployed its SkyLine and SkySmart tracker products across projects in China, the Middle East, Latin America, and emerging markets. The company's AI-assisted tracking algorithms and specialisation in challenging installation environments differentiate it from purely cost-focused Chinese tracker competitors. Its growing international project pipeline reflects strong positioning in the non-Chinese utility solar market.

🇨🇳 SSE

$1.23B

Tracker

SkyLine + SkySmart single-axis trackers; extreme climate specialisation; Middle East + LATAM + EM markets
Canadian Solar
CSIQ $1.21B 🇨🇦 Canada 🇺🇸 NYSE/NASDAQ Module Manufacturer Renewable IPP

Canadian Solar

Domicile: 🇨🇦 Canada Segment: Module Manufacturer Renewable IPP

Canadian Solar is a Canada-headquartered vertically integrated solar energy company with one of the broadest value chain footprints in the global industry. Its CSI Solar division manufactures modules with over 22 GW of annual capacity across plants in China, Southeast Asia, and Brazil, while its Recurrent Energy division develops, owns, and operates utility-scale solar and battery storage projects globally. Canadian Solar's CSI Solar manufacturing subsidiary listed on the Shanghai STAR Market in June 2023 under ticker 688472, providing a separately listed vehicle for the manufacturing business while the parent retains majority ownership. Its diversified business spanning manufacturing, project development, and energy services makes it one of the most complete integrated solar companies listed on a major Western exchange.

🇺🇸 NYSE/NASDAQ

$1.21B

Module Manufacturer Renewable IPP

22 GW+ module capacity; Recurrent Energy IPP; CSI Solar STAR Market listed subsidiary (688472.SS)
Voltalia
VLTSA.PA $1.05B France EPA Renewable IPP

Voltalia

Domicile: France Segment: Renewable IPP

Voltalia is a French independent renewable energy developer, IPP, and service provider with a portfolio of solar, wind, biomass, hydroelectric, and battery storage projects across Europe, Latin America, and Africa. The company's service offering, which combines EPC, O&M, and project development services for third-party developers with ownership of its own generating assets, creates a dual revenue stream model. Voltalia has a growing project pipeline in high-irradiance markets and has been expanding its battery storage activity alongside solar. Its French listing on Euronext Paris and exposure to African and Latin American growth markets provides geographic diversification.

EPA

$1.05B

Renewable IPP

Solar + wind + hydro + BESS + biomass IPP; Europe + LATAM + Africa; EPC + O&M services dual model
Tigo Energy
TYGO $300M 🇺🇸 United States 🇺🇸 NYSE/NASDAQ Inverters

Tigo Energy

Domicile: 🇺🇸 United States Segment: Inverters

Tigo Energy is a US-based provider of module-level power electronics (MLPE), competing primarily with Enphase and SolarEdge. Its TS4 platform delivers per-panel optimisation, real-time monitoring, and code-required rapid shutdown for residential, commercial, and utility-scale solar systems. The company also offers GO Energy Storage Systems for residential solar-plus-storage and the Predict+ machine-learning analytics platform used by utilities for renewable forecasting. Tigo recovered strongly in 2025, with revenue of $103.5 million up 91.7% year-on-year and roughly 2.7 million optimisers shipped. Recent strategic moves include a US manufacturing partnership with EG4 to access IRS Section 45X advanced-manufacturing credits and 48E investment-tax credits, plus international expansion in EMEA where bans on Chinese MLPE have created competitive opening for Western suppliers.

🇺🇸 NYSE/NASDAQ

$300M

Inverters

TS4 MLPE optimisers; GO ESS residential storage; Predict+ ML analytics; 45X US mfg partnership with EG4
7C Solarparken
HRPK.DE $176M 🇩🇪 Germany 🇩🇪 ETR Renewable IPP

7C Solarparken

Domicile: 🇩🇪 Germany Segment: Renewable IPP

7C Solarparken is a German operator and developer of small-scale distributed solar parks generating stable revenue from German feed-in tariffs and direct marketing agreements. Listed on the Frankfurt Stock Exchange, the company's business model focuses on acquiring and operating existing solar parks and developing new ground-mount and rooftop solar projects in Germany and Belgium. Its stable contracted revenue from German renewable energy legislation makes it a lower-volatility solar investment compared to module manufacturers or international developers. The company's small market cap reflects its niche focus on the German distributed solar market.

🇩🇪 ETR

$176M

Renewable IPP

German distributed solar parks; feed-in tariff + direct marketing; Germany + Belgium focus
Disclaimer: This list is for informational and educational purposes only and does not constitute investment advice. Market capitalisation figures are updated monthly and may not reflect real-time prices. Green Stocks Research has no financial relationship with any companies listed. Always conduct your own due diligence before making any investment decisions.

Solar Stocks — Investor FAQ

Utility-scale solar is now the cheapest source of new electricity in most major markets, and demand is being pulled by structural new buyers, most importantly data centres. Unsubsidised solar LCOEs sit at $50–70/MWh in the US and below $30/MWh in the highest-irradiance regions, against $80–100/MWh for new-build combined-cycle gas; the gap is reinforced by roughly seven-year gas turbine lead times and EPC inflation. Module costs have fallen approximately 90% over the past fifteen years as Chinese manufacturing capacity has scaled and cell efficiencies have improved. Alongside policy support across China, the EU, India, and the US, solar is now being pulled by data-centre load growth (projected to reach roughly 15% of US electricity consumption by 2030), the broader electrification of transport and heating, and grid-modernisation needs in still-unsaturated markets such as ERCOT and the US Southeast.
Upstream makes the kit; downstream owns the assets, and oversupply that punishes one end of the chain often lifts returns at the other. Upstream companies make the physical components: polysilicon, wafers, cells, modules, inverters, trackers, racking, and balance-of-system. Their economics are driven by manufacturing scale, technology cost curves, and the global capacity cycle, leaving them fully exposed to oversupply and pricing wars. Downstream players are project developers, EPC contractors, and Independent Power Producers (IPPs) that build and operate solar assets, earning long-duration revenue under 15–25 year Power Purchase Agreements (PPAs). The two ends of the chain often move inversely: oversupply that compresses module margins simultaneously lowers the cost base for developers and lifts project IRRs. Downstream names are also more rate-sensitive: IPPs traded on dividend yields tend to de-rate when long-end government bond yields rise, while residential solar is hit hardest given its dependence on consumer loans and leases.
China sets marginal global pricing across the solar value chain, so Chinese supply discipline (or the lack of it) drives margins for almost every listed name. China accounts for roughly 80–90% of global polysilicon, wafer, cell, and module capacity. Since late 2022 the industry has been in a deep oversupply cycle: polysilicon spot prices fell well below cash cost for most producers, module prices collapsed, and even Tier-1 manufacturers reported negative gross margins. Beijing's policy response, labelled "anti-involution" and formally adopted as a national priority under the 15th Five-Year Plan, aims to enforce capacity discipline and pricing floors. The April 2026 elimination of China's solar export VAT rebate (cut from 9% to 0%) further raises the floor under Chinese export pricing. Western trade actions reinforce the bifurcation: US Section 201 and AD/CVD tariffs, the Uyghur Forced Labor Prevention Act, FEOC rules, and EU anti-dumping measures have created a higher-priced US/EU market where non-Chinese manufacturers, particularly those eligible for IRA Section 45X credits, can earn structurally better returns.
Storage has moved from optionality to necessity in markets approaching solar saturation, and battery attach rates are now as important as module shipments for forward earnings. Solar-plus-storage pairs a PV array with a co-located lithium-ion battery, allowing midday solar generation to be shifted to evening peak hours. California's Q1/Q2 2024 capture-rate collapse, when wholesale solar prices repeatedly hit zero or negative during the duck-curve middle of the day, set the global template; Spain, France, Germany, Australia, and several Chinese provinces are progressing through the same dynamic. The 2025 California data shows storage is working: critical mass has stabilised CAISO solar capture rates after the 2024 trough. Project sizing is migrating from 1–2 hour batteries (intraday arbitrage) toward 4-hour systems as standard, with auctions clearing 6–8 hour systems and ERCOT potentially heading to 6–10 hour duration over the next 24–36 months.
The composition of the ERCOT interconnection queue is instructive: roughly 50/50 standalone solar versus solar-plus-storage, with 94% of all planned solar assets now targeting co-located storage. For investors, this means battery attach rates and ESS shipment growth have become as important as module shipments for assessing forward earnings, visible in Sunrun's 71% Q4 2025 attach rate, JinkoSolar's pivot toward ESS as a second growth engine, and Enphase's IQ Battery and Tigo's GO ESS launches.
The US policy stack is unusually consequential for solar valuations, and was reshaped, but not dismantled, by the One Big Beautiful Bill Act (OBBBA) of 2025. Four pieces of the stack are particularly load-bearing for listed companies. Section 45X advanced manufacturing production credits pay roughly $0.07/W for US-made modules and lesser per-unit amounts for cells, wafers, and inverters; First Solar recognised $1.6 billion of 45X credits in 2025 and guides $2.10–$2.19 billion for 2026. Section 48E and 45Y investment and production tax credits underwrite project economics, with a July 2026 safe-harbor deadline triggering a meaningful pull-forward of 2026–27 commissioning. FEOC (Foreign Entity of Concern) rules determine which projects can claim those credits, broadly excluding Chinese-controlled supply chains and giving FEOC-compliant US, Indian, and South-East Asian manufacturers a structural pricing premium. Section 232 tariffs on imported modules remain a pending upside catalyst for domestic producers.
Residential solar lost its Section 25D homeowner credit at end-2025, which is a structural tailwind for third-party-ownership platforms like Sunrun whose lease and PPA model continues to qualify under Section 48E. The tax-equity market itself has tightened materially as buildout has outpaced supply, with developers increasingly using direct credit transfers (selling ITC and 45X credits at $0.91–0.92 on the dollar) to monetise the subsidy stack outside conventional tax-equity structures.

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Key Terms
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The ultra-pure form of silicon (>99.9999%) that is the raw material for crystalline-silicon solar cells. Produced from metallurgical-grade silicon, primarily through the modified Siemens process (Daqo, Tongwei, GCL Technology) or the fluidised-bed reactor process (GCL Technology, REC Silicon). China accounts for over 80% of global polysilicon production, concentrated in Xinjiang and Inner Mongolia. Polysilicon prices are highly cyclical and have collapsed since late 2022 alongside the broader oversupply cycle, with most Chinese producers now selling below cash cost.
The completed solar panel, typically 60 to 78 photovoltaic cells laminated between glass, encapsulant film, and a backsheet (or rear glass for bifacial), bonded into an aluminium frame. Module power output has risen from approximately 290W in 2010 to 600W+ today as cell efficiencies have climbed from ~15% to 24%+. Module prices have fallen approximately 90% over the past fifteen years, from above $2/W to roughly $0.10–0.15/W ex-China today. Bifacial modules, which generate power from both front and rear surfaces, add 4–9% annual energy yield and have been standard for utility-scale installations since around 2020.
Solar cell architecture has evolved through several generations, each lifting efficiency. BSF (Aluminium Back Surface Field) was the industry standard until around 2018. PERC (Passivated Emitter and Rear Contact) added a rear passivation layer, dominated production from roughly 2018 to 2023, and is being phased out. TOPCon (Tunnel Oxide Passivated Contact) is the current dominant N-type technology, used in JinkoSolar's Tiger Neo, Trina's Vertex N, and JA Solar's DeepBlue, achieving mass-production efficiencies above 26%. HJT (Heterojunction) and BC (Back Contact, including LONGi's HPBC 2.0 architecture in Hi-MO 9) are the emerging premium technologies competing for next-generation leadership. CdTe (Cadmium Telluride, First Solar's thin-film technology) sits outside the silicon roadmap entirely.
The power-electronics device that converts the direct current (DC) output of solar panels into alternating current (AC) for the grid or building loads. Central inverters (Sungrow, Sineng, SMA) are large units of 1–8 MW used in utility-scale projects. String inverters (Sungrow, Huawei, GoodWe, Solis, Solax) handle 3–350 kW for commercial-and-industrial and smaller utility-scale projects, and have been gaining share against central inverters. Microinverters (Enphase, Hoymiles) operate at the panel level, providing per-module monitoring and superior shade tolerance at higher per-watt cost, and are the dominant choice in US residential. Hybrid inverters (Deye, GoodWe, Sungrow) integrate a battery interface for solar-plus-storage applications.
A ground-mounted racking system that rotates solar panels to follow the sun across the sky, increasing annual energy yield by 20–30% versus fixed-tilt installations. Single-axis trackers (the dominant type) rotate panels east-to-west on a north-south horizontal axis. Dual-axis trackers add a second tilt-adjustment axis but are too expensive for most utility-scale projects. Trackers add roughly $0.04–0.06/W to project capex versus fixed-tilt and have become the standard for new utility-scale solar in most major markets. Key listed suppliers include Nextpower (formerly Nextracker), Array Technologies, Arctech Solar, and FTC Solar.
The average cost per unit of electricity (typically expressed in $/MWh) generated over a power plant's lifetime, accounting for capital costs, operating costs, fuel, financing costs, and capacity utilisation. LCOE is the standard tool for comparing the economics of different generation technologies. Unsubsidised utility-scale solar LCOEs sit at $50–70/MWh in the US and below $30/MWh in the highest-irradiance regions, against $80–100/MWh for new-build combined-cycle gas turbines, making solar the cheapest source of new electricity in most major markets.
A long-term contract (typically 10–25 years) between a solar project owner and an offtaker (utility, corporate, or government), fixing the price and volume of electricity to be delivered. PPAs provide the contracted revenue stream that enables non-recourse project financing. Solar PPA prices have moved up from $40–60/MWh at the start of the cycle to $50–70/MWh today across major US markets, still well below other generation technologies. Variants include physical PPAs (electricity is physically delivered), virtual PPAs (financial swap with no physical delivery), and tolling agreements (offtaker pays a capacity fee and controls dispatch).
A company that owns and operates power generation assets and sells electricity into wholesale markets or under long-term PPAs, without owning regulated transmission or distribution networks. The IPP model dominates utility-scale solar development globally. Listed renewable IPPs on this list include NextEra Energy (via NEER), Brookfield Renewable, Clearway Energy, AES, Scatec, Solaria, Grenergy, ReNew, Voltalia, 7C Solarparken, Enlight, and Xinyi Energy. IPP valuations are typically driven by long-term contracted cash flow visibility, the cost of capital relative to the long-end government bond yield, and the development pipeline that drives growth above the operating fleet.
The duck curve describes the daily power-price pattern in solar-heavy grids: low or negative wholesale prices in the middle of the day when solar is generating heavily, and a sharp price spike in the evening when solar drops off but demand peaks. The shape resembles a duck: midday belly, evening neck. Capture rate is the price a solar plant actually receives versus the average market price across all hours; in saturating markets it falls because solar floods the grid precisely when prices are lowest. California's solar capture rate collapsed in Q1/Q2 2024 as the duck curve deepened, prompting the rapid shift toward solar-plus-storage. Co-located storage shifts midday solar generation to evening peak hours, restoring capture rates and project economics.
The percentage of new solar installations sold or commissioned with co-located battery storage. Attach rates have risen sharply as solar penetration has saturated daytime generation in major markets. The ERCOT interconnection queue is roughly 50/50 standalone solar versus solar-plus-storage, with 94% of all planned solar assets targeting co-located storage. In US residential, Sunrun reported a 71% Q4 2025 attach rate, up from 62% a year earlier. For investors, attach rates and energy storage system (ESS) shipment growth have become as important as module shipments for forward earnings, visible in JinkoSolar's pivot to ESS as a second growth engine, and Enphase's IQ Battery and Tigo's GO ESS launches.
Four federal credits drive the economics of US-listed solar names, all reshaped, but not dismantled, by the One Big Beautiful Bill Act (OBBBA) of 2025. Section 45X pays manufacturers a per-unit production credit for US-made components: $0.07/W for modules, $0.04/W for cells, $12/m² for wafers, $3/kg for polysilicon, $0.0025/W for central inverters, and $0.11/W for microinverters. Section 48E (Investment Tax Credit) and Section 45Y (Production Tax Credit) underwrite project economics, with a July 2026 safe-harbor deadline pulling forward 2026–27 commissioning. FEOC (Foreign Entity of Concern) rules determine which projects can claim those credits, broadly excluding Chinese-controlled supply chains. Section 232 tariffs on imported modules remain a pending upside catalyst for domestic producers. The residential homeowner credit (Section 25D) expired at end-2025, leaving the Section 48E-eligible third-party-ownership platforms (Sunrun) as the principal beneficiaries of remaining residential incentives.
The Chinese government's policy framework targeting "irrational competition" and below-cost selling across overcapacity industries, formally adopted as a national priority under the 15th Five-Year Plan. For solar, the policy aims to enforce capacity discipline, set pricing floors, and rationalise the supply side after years of capacity additions outpacing demand left polysilicon and module prices below cash cost for most producers. Concrete measures include the April 2026 elimination of the 9% VAT export rebate on solar PV products, government-led symposia involving MIIT, NDRC, SAMR, and NEA agencies, and pressure on producers to refuse below-cost sales. The policy is a core variable in the bull case for upstream Chinese solar names like Daqo, GCL Technology, and Tongwei.
The financing structures that monetise US clean-energy tax credits (Section 48E ITC, 45Y PTC, 45X manufacturing credits) for projects that lack the tax appetite to use them directly. Tax equity partnerships involve a tax-paying investor (historically banks and major corporates) taking an ownership stake in a project in exchange for the credits and depreciation benefits. The IRA introduced direct credit transfers, which allow developers to sell credits to unrelated buyers for cash, broadening the pool of buyers beyond traditional tax-equity providers. The tax-equity market has tightened materially as buildout has outpaced supply; ITC and 45X credits are currently transferring at roughly $0.91–0.92 on the dollar. The novelty of the transfer market is reinforcing a premium for FEOC-aligned supply chains and widening the financing gap between Tier 1 and Tier 2 developers.

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