Top 10 Renewable Energy Companies in the USA (2026)

The US clean‑energy build‑out accelerated in 2025, pushing total installed wind, solar, and battery storage past 400 GW after an estimated 30 GW of new capacity came online. That surge reflects the durable economics of onshore wind and utility‑scale solar, corporate appetite for power purchase agreements, and the rapid expansion of battery storage as a grid‑flexibility tool. For developers, financiers, and energy buyers, knowing which companies are leading physical deployment matters more than ever. Below, we rank the top 10 renewable energy companies in USA by operational capacity, drawing on Q2 2026 filings and verified project databases.

Methodology

How We Rank the Top 10 Renewable Energy Companies in USA

We sort companies by total US operational renewable capacity in megawatts (MW), net of disclosed ownership stakes. Capacity under construction and technology diversity – spanning onshore wind, offshore wind, utility‑scale solar photovoltaic, and battery energy storage – serve as secondary weightings. Only assets located in the United States are counted. Financial metrics such as revenue or market capitalisation are deliberately excluded; the list focuses on megawatts deployed, not stock performance.

Data Sources and Update Cycle

Public filings, company press releases, and verified industry databases (including FERC and EIA data) supply the underlying information. The ranking is refreshed annually each Q2 to capture the latest commissioning, acquisition, and repowering activity. A downloadable CSV with full breakdowns for the top 50 companies is available at no charge.

Top 10 Renewable Energy Companies in USA

A quick‑reference comparison of the top 10 players by capacity, technology split, and near‑term pipeline follows. Detailed profiles explain each company’s footprint and strategy.

Rank	Company	Op. Capacity (GW)	Wind (GW)	Solar (GW)	Storage (GW)	Under Construction (GW)
1	NextEra Energy Resources	35	20	12	3	5
2	Invenergy	>25	15	8	2	4
3	Duke Energy Sustainable Solutions	10	7	3	0	2
4	EDF Renewables North America	10	5	4	1	0 (1 GW in dev.)
5	Enel Green Power North America	9	5	3	1	1.5
6	Avangrid Renewables	8	6	2	0	1 (plus 800 MW offshore)
7	Apex Clean Energy	7	5	2	0	2
8	Ørsted US	5	—*	—	—	3
9	Clearway Energy Group	5	2	3	Growing	1
10	Cypress Creek Renewables	4	0	4	Growing	1

* Ørsted’s US onshore wind/solar portfolio totals about 4.2 GW, with an additional 834 MW of offshore wind fully commissioned. The table row uses a consolidated 5 GW total.

1. NextEra Energy Resources

NextEra Energy Resources, headquartered in Juno Beach, Florida, leads with over 35 GW of US renewable capacity. Its domestic fleet includes roughly 20 GW of onshore wind, 12 GW of utility‑scale solar PV, and 3 GW of battery energy storage. A further 5 GW is under construction, much of it solar‑plus‑storage hybrids in the Southwest. The North Central Wind portfolio in Oklahoma and the Blythe Solar Energy Center in California illustrate the company’s scale. With such an extensive footprint, NextEra can offer competitive virtual PPAs, though buyers should review project‑level interconnection queue positions before committing.

2. Invenergy

Chicago‑based Invenergy has assembled a US portfolio exceeding 25 GW. Onshore wind accounts for 15 GW, solar for 8 GW, and standalone battery storage for 2 GW. The 1.3 GW Samson Solar Energy Center in Texas is one of the largest single‑phase solar projects in the country. Around 4 GW of new wind, solar, and BESS projects are under construction across multiple ISOs. For load‑serving entities seeking rapid execution from a large independent developer, Invenergy’s in‑house development and construction model often shortens timelines.

3. Duke Energy Sustainable Solutions

Duke’s renewable arm operates 10 GW, 7 GW from wind and 3 GW from solar. The Charlotte‑based division is leaning into brownfield revitalisation and behind‑the‑meter battery storage for commercial and industrial customers. Frontier Windpower II (350 MW) in Oklahoma stands out. About 2 GW of new solar and storage is under construction in the Southeast and Midwest. Many buyers assume Duke only serves regulated states, but its sustainable solutions unit actively pursues merchant and corporate offtakers nationally.

4. EDF Renewables North America

Operating from San Diego, EDF Renewables runs 10 GW of wind (5 GW), solar (4 GW), and battery storage (1 GW). The company specialises in merchant generation backed by long‑duration power purchase agreements. Key assets include the Palen Solar complex and Milam Wind in Texas. A 1 GW solar‑plus‑storage pipeline in the Western Interconnection is in development, not yet reflected in the under‑construction count. EDF’s merchant exposure means some projects lack fixed‑price PPAs; offtakers evaluating these assets should model revenue stack risk carefully.

5. Enel Green Power North America

Enel Green Power manages 9 GW of US renewables – 5 GW wind, 3 GW solar, 1 GW BESS – and is actively repowering older wind farms with larger turbines. The Roadrunner solar project and the Azure Sky wind‑plus‑storage hybrid, both in Texas, exemplify its hybridisation strategy. A further 1.5 GW is under construction. For asset owners with aging wind fleets, Enel’s repowering track record offers a model for boosting output without new interconnection queues.

6. Avangrid Renewables

Avangrid, an Iberdrola subsidiary, operates 8 GW onshore (6 GW wind, 2 GW solar) and has become a major player in offshore wind. Vineyard Wind 1 (800 MW) off Massachusetts reached commercial operation in early 2025. Onshore construction adds 1 GW, mostly in the Pacific Northwest and Texas. If your portfolio needs exposure to both onshore and offshore wind under one developer, Avangrid offers a rare vertically integrated option.

7. Apex Clean Energy

Founded in 2009 in Charlottesville, Virginia, Apex operates 7 GW, with 5 GW in onshore wind. The company structures large‑scale corporate PPAs and maintains a merchant generation portfolio. Diamond Spring (Oklahoma) and Goose Creek (Illinois) are notable wind farms. An under‑construction pipeline of 2 GW spans repowered wind and greenfield solar sites. Apex is sometimes categorised as a pure wind developer; its solar pipeline is expanding rapidly and can serve diversified corporate requests.

8. Ørsted US

Ørsted brought 5 GW online by Q2 2026 across onshore and offshore assets. The 130 MW South Fork Wind offshore New York and the 704 MW Revolution Wind project underscore its offshore momentum. Total US capacity under construction stands at 3 GW, dominated by two additional offshore wind farms and a portfolio of onshore solar‑plus‑storage installations. Ørsted’s offshore projects carry unique permitting and offtake structures (e.g., OREC contracts) that differ markedly from onshore PPAs, a key distinction for corporate buyers.

9. Clearway Energy Group

San Francisco–based Clearway holds 5 GW of utility‑scale solar (3 GW) and onshore wind (2 GW), plus a growing battery storage fleet. The company focusses on repowering and brownfield development, capitalising on existing interconnection points. The Daggett solar‑plus‑storage complex in California and Mesquite Star wind farm in Texas are flagship projects. Another 1 GW of solar and storage is under construction. For offtakers seeking projects that can start quickly, Clearway’s brownfield strategy often translates into shorter interconnection lead times.

10. Cypress Creek Renewables

Cypress Creek, headquartered in Durham, North Carolina, specialises in utility‑scale and community solar. With 4 GW of solar PV across over 20 states and an expanding behind‑the‑meter BESS programme, it is a go‑to for commercial clients. The Wareham Solar portfolio in Massachusetts (300 MW) exemplifies its community‑scale model. An additional 1 GW of solar capacity is under construction, concentrated in PJM and SERC markets. Assuming community solar is always small‑scale is a mistake; Cypress Creek’s aggregated portfolios can deliver institutional‑grade offtake volumes.

How to Choose from the Top 10 Renewable Energy Companies in USA

The ranking above shows who owns the most megawatts, but picking a development or offtake partner requires looking beyond sheer size. The following considerations help buyers, lenders, and asset owners narrow the field.

Match technology to your load shape. A 24/7 clean energy buyer may benefit more from a developer with a balanced wind‑solar‑storage mix (like NextEra or Enel) than from a solar‑only specialist. If evening peak relief matters, storage‑heavy portfolios become critical.

Check the contract structure. Some developers primarily build merchant plants; others focus on long‑term PPAs with creditworthy offtakers. For example, EDF Renewables’ merchant generation can offer lower headline prices but exposes buyers to merchant tail risk, whereas Avangrid’s contracted offshore assets provide fixed‑price revenue for 20 years.

Watch the interconnection queue. A frequently overlooked factor is where a developer’s projects sit in regional interconnection queues. A large pipeline won’t translate into construction if the queue is stalled. Ask for queue position numbers and study the relevant ISO’s cluster study status before signing a memorandum of understanding.

Don’t neglect brownfield advantages. Clearway and Duke Energy Sustainable Solutions emphasise repowering and brownfield sites. These projects often come with existing grid connections, cutting development timelines by years. If speed matters, brownfield‑focused developers deserve a closer look.

Avoid the “biggest is best” trap. The top three developers dominate by scale, but a mid‑tier player like Apex or Cypress Creek may be more responsive to a corporate buyer’s custom PPA needs. Compare deal‑flow transparency and willingness to tailor offtake structures, not just total gigawatts.

Track technology repowering. Repowering older wind farms with modern turbines can increase output by 20–30% without new land or transmission. Enel and Apex are particularly active in repowering; evaluating a developer’s repowering schedule can reveal near‑term capacity additions that aren’t yet in the public pipeline.

A practical checklist before engaging a developer:

• Does the developer’s geographic concentration align with your facility’s load zone?
• What percentage of its pipeline is held up by queue delays?
• Is the developer willing to structure a virtual or physical PPA with the contract tenor you need?
• How transparent are its project‑level interconnection and permitting milestones?

FAQ

What are the biggest renewable energy companies in the US?
The largest by operational capacity are NextEra Energy Resources (over 35 GW), Invenergy (25 GW), and Duke Energy Sustainable Solutions (10 GW). The full top 10 list above provides a detailed breakdown of portfolios and pipelines.

How is the ranking of renewable energy companies determined?
We rank companies by total US operational renewable capacity in megawatts, with secondary weighting for capacity under construction and technology diversity. Financial metrics are excluded so the list reflects purely physical clean‑energy assets on the ground.

Which renewable energy technology is most common in the US?
Onshore wind makes up about 60% of the combined operational portfolio among the top 10. Utility‑scale solar has grown to roughly 35%, and battery energy storage — while smaller in absolute gigawatts — is expanding faster than any other segment.

How often is this top 10 list updated?
The ranking is refreshed annually each Q2, incorporating the latest commissioning, acquisition, and repowering figures. A new edition is published shortly after second‑quarter data consolidates.

Is there a difference between installed capacity and actual generation?
Installed capacity measures a plant’s maximum power output under ideal conditions. Actual generation depends on wind and solar resource profiles, grid curtailment, and operational uptime. Our ranking reflects development scale, not delivered megawatt‑hours.

Update: 30 GW of New Capacity in 2025

The estimated 30 GW of new renewable capacity added in 2025 pushed the US total past 400 GW. Battery storage installations accounted for a significant share of the additions, while onshore wind and solar continued their steady march. Much of the build‑out benefited from the Inflation Reduction Act’s production and investment tax credits, alongside corporate offtake agreements.

What to watch ahead of the 2027 ranking:

• Offshore wind scaling: Revolution Wind (704 MW) came online in early 2026; more East Coast projects will shift the offshore share in the next list.
• Repowering effect: Developers are upgrading turbines and inverters at existing sites, boosting listed capacity without new interconnection applications.
• Storage pipeline: Standalone BESS and solar‑plus‑storage hybrids are moving from development to construction at record rates – expect storage to claim its own column in future capacity tables.
• Mergers and acquisitions: Consolidation among mid‑tier developers could reshuffle the top 10, bringing new entrants from the oil & gas or infrastructure fund space.

The next edition of the top 10 renewable energy companies in USA, scheduled for Q2 2027, will capture these shifts. A free downloadable CSV of the top 50 US clean‑energy companies, with full capacity breakdowns, technology splits, and development pipelines, is available now.