The Biggest EPC Companies in Renewable Energy 2026

When developers map the energy transition, they look for the biggest EPC companies—the firms that actually deliver utility-scale solar parks, onshore wind farms, and battery energy storage plants. Record after record falls as global renewable capacity expands, and behind every completed project stands an engineering, procurement, and construction contractor that turned financing into operational assets. This ranking surfaces the ten largest renewable EPC firms by capacity built and active project pipeline, drawn from corporate filings, contract announcements, and industry databases. Asset owners, investors, and procurement teams use this kind of shortlist to identify which companies have the depth, geography, and technology experience to carry a project from notice to proceed all the way to commercial operation.

How We Ranked the Biggest EPC Companies

Our list focuses on two hard numbers: total gigawatts of renewable‑energy capacity a firm has physically constructed, and the gigawatts sitting in its active project pipeline. All figures come from publicly available data—corporate disclosures, completed EPC contract announcements, and verified industry databases. Only companies with a stat‑driven, renewable‑only EPC portfolio that passes our verification thresholds are included.

Data Sources and Verification

We pull data from annual reports, investor presentations, press releases that reference signed EPC contracts, and independent tracking databases. One nuance worth flagging: many project developers announce “backlog” or memorandums of understanding before a project reaches financial close. We exclude those early‑stage indications and count only EPC awards where a financial investment decision (FID) or equivalent binding commitment has been made. This prevents inflated pipeline figures that confuse capacity under real contract with capacity that is still aspirational.

What Counts as Built and Pipeline

Built capacity means gigawatts where the EPC contractor has completed commissioning and handed the plant over to the owner—often marked by a commercial operation date (COD) milestone. Pipeline figures reflect signed EPC agreements for projects that have passed FID but are not yet mechanically complete. The ranking is refreshed annually to capture the latest GW deployed and new pipeline commitments, so the numbers you rely on today reflect where the contractors stand at the time of publication.

Who Are the Biggest EPC Companies Delivering Renewables?

The ten companies below have moved more steel, modules, and wind turbines into the ground than any others tracked in the renewable‑only EPC space. Their combined installed base tops 100 GW, with a forward order book that rivals the annual additions of some mid‑sized countries.

Global Renewable EPC Leader: PowerChina

When the 2 GW Al Dhafra solar project in Abu Dhabi needed an EPC partner, it turned to PowerChina. Formed in 2011 from state‑owned assets, the Beijing‑based group has since constructed more than 40 GW of utility‑scale wind, solar, and hydro capacity worldwide. An active pipeline exceeding 25 GW keeps the firm busy across Middle Eastern solar tenders and Asian onshore wind corridors. A common planning assumption that trips up developers: PowerChina’s massive numbers do not guarantee instant availability in every region—its capacity is heavily concentrated in Asia and the Middle East, and lead times for mobilisation outside those zones can differ from local champions.

Solar‑Dedicated EPC Giants

Sterling and Wilson Renewable Energy has delivered over 14 GW of solar photovoltaic capacity worldwide, including the 1,177 MW Sweihan plant in the UAE. Headquartered in Mumbai and tracing its roots to 1927, the company carries another 3 GW under execution and holds a pipeline of more than 5 GW across India, Africa, and Latin America.

SOLV Energy is the largest US‑headquartered renewable EPC contractor on the list. It has engineered and built more than 15 GW of solar photovoltaic and energy storage projects in the United States. Starting its renewables EPC work in 2003 from San Diego, the firm completed the 500 MW Palen Solar project in California. Its active pipeline above 8 GW increasingly includes behind‑the‑meter battery energy storage systems (BESS).

Risen Energy began as a PV module manufacturer in Ningbo, China, in 1986, but has scaled its EPC arm to build over 8 GW of solar projects internationally. A representative contract includes supply and EPC integration for a 200 MW solar park in India. The pipeline sits around 10 GW, concentrated on utility‑scale solar in Asia and Eastern Europe.

Belectric GmbH was founded in 2001 in Kolitzheim, Germany, and has constructed more than 4 GW of solar PV plants globally. Among its completions is the 150 MW Templin solar park in Brandenburg. Its pipeline of approximately 3 GW remains focused on utility‑scale solar and storage in Europe and the Middle East.

For developers comparing these solar specialists, a practical rule of thumb: if your project is in a high‑irradiance desert environment, contractors like Sterling and Wilson and SOLV Energy bring thousands of megawatts of directly relevant experience in those conditions. A frequent misstep is to compare only total GW without checking how many of those GW were delivered in climates and soil conditions that match your site—experience in temperate Europe does not automatically translate to the Middle East or Latin America.

Diversified Wind and Solar Contractors

Larsen & Toubro’s renewable EPC arm operates from Mumbai and has delivered over 10 GW of solar and onshore wind capacity. Key completions include the 300 MW Sakaka solar plant in Saudi Arabia and multiple GW‑scale wind farms in India. Its pipeline stands at approximately 7 GW, with growing exposure to offshore wind EPC contracts—a segment where few EPC firms yet have multi‑project track records.

Juwi AG of Wörrstadt, Germany, has constructed more than 5 GW of onshore wind and solar photovoltaic capacity since 1996. The 180 MW Gullen Range wind farm in Australia marks one milestone. Its pipeline of around 4 GW now includes a rising share of repowering and hybrid renewable EPC packages, which combine wind and solar under a single contract.

TSK, based in Gijón, Spain, has delivered around 4.5 GW of solar and wind EPC projects since 1988, with a strong footprint in Latin America and the Middle East. The 100 MW La Jacinta wind farm in Uruguay is a reference project. The company’s pipeline of renewable EPC contracts surpasses 5 GW.

Elecnor, headquartered in Madrid and founded in 1958, has constructed more than 3.5 GW of wind and solar capacity, with large portfolios in Brazil and Australia. The 220 MW Bungala solar farm in South Australia is a notable completion. Its pipeline of about 4 GW includes EPC contracts for the transmission infrastructure tied to renewable generation—a capability that can reduce the number of interfaces a developer must manage.

Eiffage Énergie Systèmes has been active in renewable EPC for decades from its base in France, building over 3 GW of onshore wind and solar photovoltaic capacity across France and northern Africa. The pipeline sits at about 2 GW, favouring repowering of existing wind farms and new utility‑scale solar parks.

When an offtaker or developer is running a hybrid tender that mixes wind, solar, and storage, diversified contractors like Juwi, TSK, and Elecnor can offer a single‑point EPC wrap. That structure often cuts coordination risk compared to splitting the package across multiple specialty firms. At the same time, a mistake some procurement teams make is to assume every diversified contractor carries equal weight in every technology—a firm strong in onshore wind may be building solar through a newer division, so ask for technology‑specific completion lists.

Comparison of the Biggest EPC Companies by Capacity and Pipeline

The table below gives a snapshot of these ten contractors, making it easy to compare headquarters, technology focus, built capacity, and forward pipeline at a glance.

Company	Headquarters	Primary Renewable Focus	Global Capacity Built (GW)	Project Pipeline (GW)	Year Founded
PowerChina	Beijing, China	Wind, Solar, Hydro	>40 GW	>25 GW	2011
Sterling and Wilson	Mumbai, India	Solar PV	>14 GW	>5 GW	1927
SOLV Energy	San Diego, USA	Solar PV, BESS	>15 GW	>8 GW	2003
Larsen & Toubro	Mumbai, India	Solar, Wind	>10 GW	~7 GW	1938
Risen Energy	Ningbo, China	Solar PV	>8 GW	~10 GW	1986
Juwi AG	Wörrstadt, Germany	Solar, Onshore Wind	>5 GW	~4 GW	1996
Belectric GmbH	Kolitzheim, Germany	Solar PV	>4 GW	~3 GW	2001
TSK	Gijón, Spain	Solar, Wind	~4.5 GW	>5 GW	1988
Elecnor	Madrid, Spain	Wind, Solar	>3.5 GW	~4 GW	1958
Eiffage Énergie Systèmes	France	Onshore Wind, Solar	>3 GW	~2 GW	–

Choosing Among the Biggest EPC Companies: Key Factors

Capacity numbers alone seldom pick the right EPC contractor for your project. The checklist below surfaces what procurement and development teams probe when they move from a long list to a shortlist.

• Regional track record: Confirm the contractor has completed projects in your target country and understands local permitting, grid codes, and labour practices.
• Technology match: Separate solar, onshore wind, offshore wind, and BESS experience. A firm that built 5 GW of wind does not automatically know utility‑scale floating PV.
• Pipeline concentration risk: A contractor with 90 % of its pipeline in one region may face resource conflicts, tariffs, or currency exposure that delay your project.
• Contract structure: Decide if you need a full turnkey EPC wrap or a split‑scope approach. Some of the biggest EPC companies offer both, but their pricing and risk posture shift with the scope.
• Grid interconnection capability: Contractors such as Elecnor that also build transmission can reduce interface mismatches between generation assets and the point of interconnection.
• Local content and supply chain: In markets with domestic manufacturing requirements, start with contractors that already run a local subsidiary or established supply chain, since they can often meet content thresholds without redesigning the procurement plan.

A scenario that trips up first‑time developers: comparing two contractors purely on cumulative GW built and picking the larger number. A contractor with 2 GW of desert solar experience in the Middle East will typically outperform a 10 GW contractor whose entire portfolio is in Northern Europe when the site sits in Oman. Equally, if your financing requires a lump‑sum turnkey contract with fixed performance guarantees, verify that the EPC contractor has closed deals under that exact structure in the past two years—not all of the biggest EPC companies underwrite full performance wraps on every project.

Frequently Asked Questions

Who is the biggest EPC contractor in renewable energy?
By cumulative renewable capacity built, PowerChina leads with more than 40 GW of utility‑scale wind, solar, and hydro projects completed globally. Sterling and Wilson and SOLV Energy also rank among the very largest pure‑play renewable EPC firms.

What are the biggest EPC companies in the US?
SOLV Energy is the largest US‑headquartered renewable EPC contractor in the ranking, with over 15 GW of solar and storage capacity constructed. Additional US firms are included when they disclose verifiable renewable‑only EPC data that meets the capacity thresholds used in this list.

Who is the best EPC company for solar projects?
Sterling and Wilson, SOLV Energy, Belectric, and Risen Energy are the largest solar EPC companies in the ranking, each having built more than 4 GW of solar PV capacity. The best fit for a given project depends on regional experience, technology mix, and preferred contract structure—there is no single best company for every solar site.

How are these EPC companies ranked?
Firms are ranked by cumulative renewable capacity built and current project pipeline size, using publicly available data that is refreshed annually. Only EPC awards that have reached financial close or equivalent binding commitment count toward the pipeline; the full methodology is explained further up.

Do these EPC companies handle oil and gas projects?
The ranking covers renewable energy EPC services exclusively. Many top EPC contractors maintain diversified portfolios that may include conventional power or hydrocarbons, but this list is constructed using renewable‑energy metrics alone.

How often is the ranking updated?
The ranking is refreshed once a year to incorporate the most recent construction completions and newly signed EPC agreements that meet our verification standard. Checking the publication date helps you know whether the pipeline numbers capture the latest tender results in your target market.