Energy Transition EPC, Engineering & Construction Stocks
Someone has to build all of it. Solar farms, offshore wind parks, transmission lines, battery sites and nuclear plants are delivered through a chain of owners, engineering, procurement and construction (EPC) firms, engineers and specialist subcontractors, and the build-out of clean energy and the grid that carries it has put years of visible work into a sector that has always run in cycles.
This clean energy EPC stocks list covers 18 listed contractors and engineers across six segments: grid and electrical infrastructure specialists, utility-scale solar and power generation EPCs, nuclear engineering and construction firms, offshore wind and marine contractors, diversified international EPC groups, and hydrogen and industrial process engineers. Filter by segment to isolate the pure grid names, by exposure to separate the focused contractors from the conglomerates, or by listing to separate US contractors from the European and Asian groups.
Contract structure matters more here than in most sectors: a fixed-price lump-sum contract puts cost overruns on the contractor, while reimbursable and unit-price work shifts that risk back to the client, and the difference has bankrupted builders in past cycles. Much of this work is also technology-neutral: a transmission contractor earns a similar margin connecting solar, wind, storage or a nuclear restart. Neutrality is not the same as safety, because awards, backlog conversion, client solvency and policy still decide results, and the companies here range from field contractors to engineers, technology licensors and one asset-owning hybrid. Exposure varies widely, and each company entry below states how much of the wider group the qualifying work represents.
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PWR | $93B | ||||
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Quanta Services
Quanta Services is a North American specialty infrastructure contractor. Its Electric Infrastructure Solutions segment designs, builds, upgrades and maintains transmission and distribution networks, substations and electrical systems for utilities, power generators, data centres and advanced-manufacturing facilities. It also provides EPC, repowering and maintenance services for utility-scale wind, solar, hydro and battery-storage projects, and owns 50% of LUMA Energy, the operator of Puerto Rico’s transmission and distribution system. The Underground Utility and Infrastructure segment builds and maintains natural-gas distribution networks and pipelines and provides midstream, downstream, industrial and mechanical services. Electric infrastructure is the majority of the business; the remaining exposure spans conventional energy, pipeline and industrial infrastructure. $93B
Grid & Electrical Infrastructure
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DG.PA | $74B | ||||
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VINCI
VINCI is a French concessions, energy-services and construction group. VINCI Autoroutes and VINCI Airports operate transport concessions; VINCI Construction builds civil, transport and building infrastructure; and Energy Solutions comprises VINCI Energies and Cobra IS. VINCI Energies designs, installs and maintains electrical, digital and industrial systems, including grid connections, substations, building energy systems and data-centre infrastructure. Cobra IS delivers large energy and industrial EPC projects and also develops, builds and operates renewable-generation, storage and electricity-transmission assets. The group therefore combines contracting and recurring concession and asset ownership. Its energy-transition exposure comes mainly from electrical infrastructure, renewable EPC and owned renewable and transmission projects, while motorways, airports and general construction remain substantial parts of the business. $74B
Diversified International EPC
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MTZ | $20B | ||||
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MasTec
MasTec, Inc. is a North American infrastructure engineering and construction contractor operating through Communications, Clean Energy and Infrastructure, Power Delivery, Pipeline Infrastructure and Other. Clean Energy and Infrastructure builds utility-scale wind, solar, battery storage, hydrogen and other generation projects, but also undertakes natural-gas generation, data-centre, water, transport, environmental and heavy-civil work. Power Delivery constructs and maintains transmission and distribution networks, substations, grid-modernisation systems, battery infrastructure and emergency restoration, alongside some gas-line and data-centre work. Communications builds wireless and fibre networks, while Pipeline Infrastructure serves natural-gas, water, carbon-capture and related markets. Renewable generation and electric-grid construction are major businesses within a diversified contractor that also depends on communications, pipelines and conventional infrastructure. $20B
Grid & Electrical Infrastructure
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000720.KS | $11B | ||||
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Hyundai Engineering & Construction
Hyundai Engineering & Construction Co., Ltd. is a diversified South Korean contractor spanning housing, commercial buildings, transport and civil infrastructure, and power and industrial plants. Its nuclear business has built domestic Korean reactors and led construction of the four APR1400 units at the completed Barakah plant in the UAE. It is also pursuing overseas large-reactor and small-modular-reactor opportunities, including work with Holtec on the proposed SMR-300 project at the Palisades site in Michigan; as of August 2026 that project remained subject to Nuclear Regulatory Commission approvals. The company has announced cooperation with other reactor developers, including TerraPower, but these arrangements should not be read as completed EPC awards. Nuclear is a strategically important capability within a much broader construction group whose results also depend on Korea’s housing and infrastructure cycle. $11B
Nuclear Engineering & Construction
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AtkinsRéalis |
ATRL.TO | $9.9B | ||||
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AtkinsRéalis
AtkinsRéalis Group Inc. is a Canadian engineering, project-management and nuclear-services company. Its Nuclear business is the original-equipment manufacturer, steward and exclusive commercial licensee of CANDU technology; the Government of Canada retains ownership of the intellectual property through Atomic Energy of Canada Limited. The business supports reactor life extensions and refurbishments, operations, waste management and decommissioning, new-build programmes, and development of the 925 MW CANDU Monark design. Linxon provides turnkey substation engineering and construction, while AtkinsRéalis’s regional engineering businesses work across power and renewables as well as transportation, buildings, water, defence and industrial infrastructure. The result is a diversified global engineering group with a distinctive nuclear franchise and additional grid exposure, not a reactor developer or nuclear pure play. $9.9B
Nuclear Engineering & Construction Grid & Electrical Infrastructure
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SPIE.PA | $8.5B | ||||
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SPIE
SPIE SA is a European multi-technical services group that designs, installs, operates and maintains energy, communications, building and industrial infrastructure. Its energy-transition work includes high-voltage transmission and distribution networks, substations, renewable and battery-storage installations, nuclear-fleet maintenance, wind-asset services, EV charging and energy-efficiency upgrades for buildings and industry. The same operating platform also serves data centres, communications networks, facilities management, industrial automation, defence, petrochemicals, LNG and oil and gas customers. Revenue is largely service- and framework-contract based rather than dependent on a small number of lump-sum mega-projects. This leaves SPIE with material exposure to Europe’s grid expansion and energy-efficiency spending inside a diversified technical-services portfolio. $8.5B
Grid & Electrical Infrastructure
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TE.PA | $6.0B | ||||
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Technip Energies
Technip Energies N.V. is a Netherlands-incorporated engineering and technology company headquartered in France. Project Delivery designs and executes large energy and industrial facilities, while Technology, Products & Services supplies process technologies, proprietary equipment, consulting and engineering. LNG remains the largest part of the business, alongside petrochemicals, refining and conventional energy infrastructure. Its energy-transition portfolio includes carbon capture, blue and green hydrogen, sustainable aviation fuels, low-carbon ammonia and selected nuclear engineering work. The company combines technology licensing and early-stage engineering with selective EPC delivery; its transition businesses sit alongside a substantial LNG and hydrocarbons franchise. $6.0B
Hydrogen & Industrial Process EPC
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SOLV Energy |
MWH | $5.7B | ||||
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SOLV Energy
SOLV Energy, Inc. is a US contractor focused on utility-scale solar, battery storage and the grid infrastructure needed to connect and operate those assets. It provides engineering, procurement and construction, plant commissioning, operations and maintenance, and performance services for large renewable-power projects. Acquisitions have expanded the platform into high-voltage transmission, substations, testing and commissioning. The business began as Swinerton Renewable Energy, became independent in 2021, combined with CS Energy in 2024 and completed its Nasdaq IPO in 2026. This produces a focused renewable-construction and services business with both project-based EPC revenue and a recurring operations-and-maintenance portfolio. $5.7B
Renewables & Power Generation EPC
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BBY.L | $5.6B | ||||
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Balfour Beatty
Balfour Beatty plc is a diversified infrastructure and construction group operating mainly in the United Kingdom, United States and Hong Kong. Its energy-transition work includes electricity transmission and distribution programmes for UK network operators, major civil packages at Hinkley Point C and Sizewell C, and construction for the Net Zero Teesside carbon-capture power project. The wider group builds highways, railways, airports, public buildings, housing and US commercial projects and also manages an infrastructure-investments portfolio. The result is a broad contractor and infrastructure investor with important UK grid and nuclear positions, rather than a company focused primarily on energy. $5.6B
Diversified International EPC
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DEME Group |
DEME.BR | $5.3B | ||||
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DEME Group
DEME Group NV is a Belgian marine engineering contractor organised around Offshore Energy, Dredging & Infra, Environmental and Concessions. Offshore Energy transports and installs offshore-wind foundations and turbines, lays subsea power cables and supports other marine energy infrastructure using a specialised vessel fleet. Dredging & Infra undertakes port development, coastal protection, land reclamation and marine civil works, while Environmental treats contaminated soil and sediments and Concessions develops selected infrastructure and renewable projects. The acquisition of Havfram expanded DEME's wind-turbine installation fleet. Offshore wind is a core business within a larger global dredging and marine-infrastructure contractor. $5.3B
Offshore Wind & Marine Construction
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MYR Group |
MYRG | $4.8B | ||||
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MYR Group
MYR Group Inc. is a North American electrical contractor operating through Transmission & Distribution and Commercial & Industrial. T&D builds and maintains high-voltage transmission lines, substations, distribution networks and related utility infrastructure, including emergency restoration and grid connections for new generation. C&I provides electrical construction for data centres, healthcare, manufacturing, transportation and other large facilities and also performs electrical scope on renewable-energy projects. The company's acquisition strategy has expanded both platforms, including the addition of Valley Electric and Comet Electric to C&I. The group therefore combines direct grid exposure with a substantial non-utility buildings and industrial electrical business. $4.8B
Grid & Electrical Infrastructure
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Primoris Services Corporation |
PRIM | $4.2B | ||||
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Primoris Services Corporation
Primoris Services Corporation is a US specialty contractor operating through Utilities and Energy. Its renewable business provides engineering, procurement and construction for utility-scale solar and battery-storage projects, while power-delivery teams build and maintain electric transmission, distribution and substation infrastructure. Utilities also includes natural-gas distribution and communications work; Energy also covers gas-fired generation, pipelines, industrial construction and heavy civil projects. Primoris therefore combines large renewable and grid-construction businesses with substantial conventional-energy and industrial exposure. Large fixed-price renewable projects also expose the company to contract-execution and cost-overrun risk. $4.2B
Grid & Electrical Infrastructure Renewables & Power Generation EPC
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KPIL.NS | $2.5B | ||||
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Kalpataru Projects International
Kalpataru Projects International Limited is an Indian engineering and construction group whose largest business builds electricity transmission lines, substations and underground cabling in India and international markets. It supports this work with in-house transmission-tower manufacturing and local operating subsidiaries in markets including Europe, the Middle East and Latin America. The rest of the group builds commercial and industrial facilities, water and irrigation systems, oil and gas pipelines, railways and urban infrastructure. The company was known as Kalpataru Power Transmission until 2023; the new name reflects the broader EPC portfolio. Grid infrastructure is the largest business, but the company remains a diversified international contractor. $2.5B
Grid & Electrical Infrastructure
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Cadeler |
CDLR | $2.5B | ||||
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Cadeler
Cadeler A/S is a Denmark-based offshore-wind installation contractor listed in New York and Oslo. Its jack-up vessels transport and install wind turbines and foundations, and the company is expanding into full-scope foundation transport and installation and offshore-wind operations and maintenance. The fleet has grown through newbuild deliveries and the completed combination with Eneti, while the acquisition of Menck added offshore-foundation installation equipment and engineering. Cadeler has no material business outside offshore wind, so its activity depends on vessel utilisation, project schedules, turbine and foundation size, and developers reaching final investment decisions. $2.5B
Offshore Wind & Marine Construction
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Aecon Group |
ARE.TO | $2.3B | ||||
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Aecon Group
Aecon Group Inc. is a Canadian construction and concessions company. Its nuclear business works on CANDU refurbishment and life-extension programmes, decommissioning and new-build projects, including the Darlington BWRX-300 small modular reactor alliance. The Utilities business builds electric transmission and distribution infrastructure but also serves gas and telecommunications networks. Aecon's wider Construction operations cover transit, roads, bridges, industrial facilities and other civil infrastructure, while Concessions develops and operates selected infrastructure assets. Aecon is therefore a diversified Canadian contractor with a distinctive nuclear capability, not a nuclear pure play. $2.3B
Nuclear Engineering & Construction
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AMRC | $1.2B | ||||
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Ameresco
Ameresco, Inc. is a US energy-services company serving government, institutional, utility, industrial and commercial customers. Its Projects business designs and builds energy-efficiency upgrades, distributed solar, battery storage, microgrids and other power infrastructure, including behind-the-meter systems for large energy users. Energy Assets owns and operates solar, storage, biogas and other generation projects, while Operations & Maintenance provides recurring services across company-owned and customer assets. The Neogenyx joint venture houses the biogas business, with Ameresco retaining control. This contractor-asset-owner model combines project-development and construction revenue with recurring service income and balance-sheet exposure to owned assets. $1.2B
Renewables & Power Generation EPC
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KEC.NS | $1.2B | ||||
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KEC International
KEC International Limited is the infrastructure EPC arm of the RPG Group and an established builder of electricity transmission and distribution systems. It constructs overhead lines, substations and underground cables in India and international markets and supports the business with in-house transmission-tower manufacturing through SAE Towers in the Americas. The wider group undertakes civil and urban-infrastructure projects, railways, renewable-energy work and oil and gas pipelines and manufactures power and telecommunications cables. Grid infrastructure remains the dominant business within a diversified EPC and manufacturing group exposed to both Indian and international capital spending. $1.2B
Grid & Electrical Infrastructure
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SWSOLAR.NS | $487M | ||||
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Sterling and Wilson Renewable Energy
Sterling and Wilson Renewable Energy Limited is an Indian engineering, procurement and construction contractor focused on utility-scale solar, hybrid renewable and battery-storage projects. It provides project design, equipment procurement, construction, commissioning and operations and maintenance in India and selected international markets. The company's operating scope is concentrated in renewable generation and storage rather than conventional power or general civil construction. It is a focused renewable EPC business whose results depend on project awards, execution, working capital and the timing and risk allocation of large construction contracts. $487M
Renewables & Power Generation EPC
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