Top 10 Biggest Renewable Energy Companies in the World (2026)

The global energy transition continues at a furious pace. Utility-scale solar parks and colossal offshore wind arrays pushed clean energy additions past 600 GW in 2025. The biggest companies in renewable energy now carry asset books measured in tens, and in a few cases hundreds, of gigawatts. Below we profile the ten largest players by installed capacity, unpack the methodology, and explain what these numbers mean for developers, buyers, and policymakers.

How We Identified the Biggest Companies in Renewable Energy

Ranking the largest clean power developers requires a transparent yardstick. We placed total installed renewable energy capacity at the centre. Numbers come from company disclosures, IRENA databases, and proprietary industry intelligence as of Q1 2026. Only wholly owned and operated assets count. Joint ventures appear on a proportional basis where ownership data permits.

A decision rule when comparing developers

If you are sourcing a power purchase agreement (PPA) or evaluating a partnership, start with generation track record rather than headlined capacity. Two enterprises with similar gigawatt numbers can deliver vastly different electricity output because of plant age, technology mix, and local weather. Always ask for the last three years’ actual generation.

Common mistake: confusing installed capacity with electricity production

A common slip is to treat a wind farm’s nameplate capacity as a constant. In reality, capacity factors differ sharply. A 10 GW fleet of modern onshore wind and solar in sunny, windy locations can out‑generate a 15 GW portfolio of aging hydropower assets. The ranking below reflects installed capacity—the industry’s most widely reported metric—but savvy readers always cross‑check with reported gigawatt‑hours.

What the data covers

Asset class	Included in ranking?
Solar PV	Yes
Onshore wind	Yes
Offshore wind	Yes
Hydropower (including pumped storage)	Yes
Battery energy storage (BESS)	Yes
Geothermal and biomass	Yes, where operated by a ranked company
Fossil‑fuel generation	Excluded

An extended dataset covering more than 400 developers—complete with asset‑class splits and contact details—is available at the end of this article.

The Top 10 Biggest Companies in Renewable Energy by Installed Capacity

The table below gives an instant view of the current leaders. Head‑to‑head comparisons improve when you study both the technology spread and the geographic footprint.

Rank	Company	Headquarters	Installed capacity (GW)	Primary technologies
1	China Three Gorges Corporation	Beijing, China	125	Hydropower, onshore wind, solar PV, BESS
2	Enel S.p.A.	Rome, Italy	60	Wind, solar, hydropower, geothermal, BESS
3	Iberdrola, S.A.	Bilbao, Spain	45	Onshore wind, offshore wind, solar PV, pumped hydro
4	NextEra Energy, Inc.	Juno Beach, USA	35	Onshore wind, solar PV, battery storage
5	Brookfield Renewable Partners L.P.	Toronto, Canada	35	Hydropower, wind, solar, storage
6	RWE AG	Essen, Germany	30	Onshore wind, offshore wind, solar PV, BESS
7	Engie S.A.	Paris, France	25	Onshore wind, solar PV, hydropower
8	EDP Renováveis, S.A.	Madrid, Spain	20	Onshore wind, solar PV, offshore wind
9	Ørsted A/S	Fredericia, Denmark	18	Offshore wind
10	SSE Renewables	Perth, Scotland	10	Onshore wind, offshore wind, hydropower, pumped storage

Capacities reflect wholly owned and operated clean energy assets as of Q1 2026. Pipeline projects awaiting final commissioning are not included.

1. China Three Gorges Corporation

China Three Gorges does not just lead this list—it laps the field. With roughly 125 GW, it is more than double the size of the second‑placed company. The 22.5 GW Three Gorges Dam alone would rank seventh if it were an independent operator. Founded in 1993 and headquartered in Beijing, the group’s core remains the mega‑hydropower stations along the Yangtze River. A fast‑growing flank of onshore wind, solar PV, and pumped storage now complements the dams. In 2025, the group pushed past 100 GW of non‑hydro clean power capacity when it commissioned a 10 GW wind‑solar‑storage complex in Inner Mongolia.

2. Enel S.p.A.

Rome‑based Enel (established 1962) sits at around 60 GW of green power. Through Enel Green Power, its fleet leans heavily on onshore wind and solar PV, while hydropower, geothermal, and an expanding battery pipeline round out the mix. The company operates across Europe, Latin America, and North America. A 2025 milestone—full energisation of a 1.3 GW solar‑plus‑storage hub in Texas—reinforced Enel’s position as a leading utility‑scale developer in the United States.

3. Iberdrola, S.A.

Bilbao‑headquartered Iberdrola (founded 1992) holds 45 GW of renewable capacity. Offshore wind took a major step forward in early 2026 when the 1.4 GW East Anglia Three project in the UK North Sea came online, lifting the group’s global offshore pipeline beyond 10 GW. Onshore wind remains the backbone, with solar PV and pumped hydro providing balance. Iberdrola’s footprint stretches across Spain, the United Kingdom, the United States, Brazil, and Mexico.

4. NextEra Energy, Inc.

NextEra Energy is already the largest producer of wind energy in North America. It controls more than 35 GW of onshore wind and utility‑scale solar across the United States. Founded in 1985 and based in Juno Beach, Florida, the company added a 690 MW solar‑plus‑storage facility in its home state in 2025, further expanding its behind‑the‑meter and grid‑connected storage portfolio.

5. Brookfield Renewable Partners L.P.

Brookfield Renewable Partners, formed in 2011 and headquartered in Toronto, holds nearly 35 GW of installed clean energy assets. Its portfolio spans hydroelectric, wind, solar, and storage across North America, South America, Europe, and Asia. The partnership’s strategy relies on long‑term PPAs and active asset rotation. In 2025, Brookfield closed the acquisition of a 7 GW global onshore wind platform, solidifying its place among the top five.

6. RWE AG

RWE traces its roots to 1898 and is based in Essen, Germany. Today’s enterprise is a pure‑play renewable developer with around 30 GW of capacity. Onshore and offshore wind, solar PV, and battery storage drive its European and Americas portfolio. In 2025, the group commissioned its first utility‑scale solar‑plus‑storage plant in Canada—a 400 MW addition that supports a stated 50 GW target by 2030.

7. Engie S.A.

Headquartered in Paris and shaped by mergers in the 2000s, Engie operates 25 GW of renewable capacity balanced across onshore wind, solar PV, and hydropower. The company has a presence in France, Brazil, the United States, and the Middle East. In 2026, Engie switched on a 500 MW solar farm in Abu Dhabi—one of the world’s largest single‑site photovoltaic installations—widening its geographic exposure.

8. EDP Renováveis, S.A.

EDP Renováveis, created in 2007 and based in Madrid, carries 20 GW of installed capacity. Onshore wind dominates the generation fleet, while solar PV and offshore wind are scaling rapidly. The company synchronised the first turbines at a 1 GW offshore wind project in New York State during 2025, marking its strategic entry into the US offshore market.

9. Ørsted A/S

Denmark’s Ørsted (formerly DONG Energy, rebranded in 2017) has 18 GW of capacity. The great bulk rests in offshore wind. Its turbines spin in the North Sea, the Baltic Sea, and off the US East Coast. Full operations at the 1.2 GW Hornsea Three offshore wind farm in 2025 lifted installed offshore capacity beyond 10 GW.

10. SSE Renewables

SSE Renewables, the dedicated clean energy arm of SSE plc, was spun out in 2020 and operates from Perth, Scotland. It holds 10 GW of capacity, led by onshore and offshore wind in the UK and Ireland, alongside hydropower and pumped storage. In 2026, the company fully energised the 3.6 GW Dogger Bank C offshore wind farm, completing the world’s largest operational offshore complex and securing a place in the global top ten.

Regional Giants: Where the Biggest Companies in Renewable Energy Dominate

Global rankings tell one story; local dominance tells another. A developer with 20 GW in Brazil can matter more to its home grid than a 50 GW giant spread across six continents. Here are the top three developers by installed capacity in three critical geographies.

Region	Top 3 developers	Combined installed renewable capacity (GW)
USA	NextEra Energy, Brookfield Renewable, Invenergy	~62 GW
Europe	Iberdrola, Enel, Ørsted	~123 GW
Asia	China Three Gorges, State Power Investment Corporation, China Huaneng Group	~240 GW

Understanding the regional picture

In the United States, NextEra Energy continues to lead with more than 35 GW of onshore wind and solar, while Brookfield Renewable and Invenergy each hold over 12 GW of American assets. If you are scouting for a utility‑scale PPA in ERCOT or PJM, NextEra and Invenergy tend to offer the most active pipelines.

Europe’s top three—Iberdrola, Enel, and Ørsted—together muster roughly 123 GW. Iberdrola’s multi‑country presence makes it a frequent counterparty for cross‑border corporate PPAs, while Ørsted’s offshore focus appeals to governments auctioning seabed leases.

Asia remains state‑backed territory. Beyond China Three Gorges and its 125 GW, State Power Investment Corporation manages over 70 GW and China Huaneng Group holds around 45 GW. The region is defined by sheer scale and policy‑driven deployment. For international investors, partnering with these enterprises often requires navigating complex joint‑venture regulations.

Frequently Asked Questions

What are the top 5 biggest companies in renewable energy?
The five largest by installed capacity are China Three Gorges (125 GW), Enel (60 GW), Iberdrola (45 GW), NextEra Energy (35 GW), and Brookfield Renewable (35 GW). By pure operating gigawatts that is the order. The picture can shift when project pipelines, market value, or asset‑ownership structures enter the calculation.

Who is the biggest renewable energy company in the world?
China Three Gorges Corporation is the biggest, with approximately 125 GW of total clean energy capacity.

Which company leads in terms of installed clean power?
China Three Gorges is the clear leader in installed renewable capacity. NextEra Energy and Iberdrola often lead by market capitalisation among pure‑play developers.

How does the ranking change if we use revenue or market cap?
By revenue, NextEra Energy is among the highest‑grossing pure‑play renewable developers, while diversified utilities like Enel and Iberdrola have larger overall revenues from their broader energy operations. Market valuations shift daily, but NextEra Energy, Iberdrola, and Enel frequently occupy the top spots.

What is the difference between installed capacity and actual electricity generation?
Installed capacity (GW) measures maximum potential output under ideal conditions. Actual generation (GWh) depends on the capacity factor—how often a plant runs at full power. Wind farms typically achieve 25–45% capacity factors, modern solar parks 15–30%, and hydropower can exceed 50%. Always check generation data when comparing developers.

Which country runs on 100% clean electricity?
No country generates 100% of its power from renewables every hour of the year, but Iceland and Paraguay produce virtually all of their electricity from renewable sources, primarily hydropower and geothermal. Several smaller nations are rapidly approaching that milestone.

Download the Full List of 400 Largest Renewable Energy Developers

Our complete directory contains more than 400 global developers, each with a detailed profile. Use it to:

• Shortlist partners for utility‑scale projects in any region.
• Compare asset‑class splits across wind, solar, hydro, and storage.
• Access verified contact information and ownership structures.

The dataset is available for free in Excel and PDF. Click the link below to download and start your search for the right development partner.