Invenergy is the largest private renewable energy company in North America, with approximately 25 gigawatts of operating capacity and a development pipeline exceeding 100 GW across wind, solar, battery storage, and natural gas. Founded in 2001 by Michael Polsky in Chicago, the company has developed more than 200 projects since inception and operates across more than 35 U.S. states as well as internationally in Canada, Europe, Japan, and Latin America.
Unlike its publicly traded peers, Invenergy has remained private and founder-controlled — a deliberate strategic choice by Polsky, who previously founded SkyGen Energy and Calpine's wind business before launching Invenergy. The company's private structure allows it to take longer-horizon development bets and avoid quarterly earnings pressure, while retaining flexibility to pursue complex, capital-intensive projects that might be difficult to execute under public market scrutiny.
Wind is Invenergy's largest and most mature business line. The company developed some of the first utility-scale wind farms in the U.S. Midwest and has since expanded to onshore wind projects across the Great Plains, Mountain West, and Eastern U.S. Invenergy is also pursuing offshore wind through its Wind Current subsidiary, targeting sites in the Atlantic and Gulf of Mexico.
Solar has become a rapidly growing share of Invenergy's development activity, particularly as utility-scale photovoltaic costs have fallen and corporate PPA demand has surged. Invenergy develops standalone solar projects and increasingly co-locates battery energy storage systems with solar to provide dispatchable clean energy. The company operates one of the largest stand-alone battery storage portfolios in North America.
Invenergy operates a portfolio of natural gas peaking plants that provide grid reliability services alongside its renewable portfolio. The company is also investing in emerging technologies including green hydrogen production, carbon capture, and long-duration energy storage — positioning itself for a multi-decade energy transition that may require firm, dispatchable low-carbon capacity beyond what batteries alone can provide.
Invenergy has developed several of the largest renewable energy projects in the U.S. The Traverse Wind Energy Center in Oklahoma (652 MW) was, at the time of completion, the largest single wind farm in the country. The company has also developed large-scale projects for major utilities including Xcel Energy, Consumers Energy, and ComEd, as well as long-term PPAs with Apple, Microsoft, and other Fortune 500 companies.
Invenergy has been active in battery storage since its early days, operating some of the first grid-scale lithium-ion storage projects in North America. Its storage portfolio now spans hundreds of megawatts of operating capacity and gigawatts of projects in development, often paired with solar generation in markets like California, Texas, and the Southeast.
Invenergy is targeting aggressive growth in its solar, storage, and transmission development pipeline to capture the surge in electricity demand driven by data centers, industrial reshoring, and electrification. The company has been among the most active developers in the interconnection queue across multiple ISOs, reflecting its bet on sustained U.S. clean energy buildout over the next decade.
The company's private structure gives it a meaningful advantage in long-horizon development: Invenergy can hold projects in early-stage development for years without pressure to monetize, allowing it to secure sites and permits well ahead of commercial viability. As the clean energy transition accelerates, this land and permit bank has become increasingly valuable.
As a private company, Invenergy provides limited financial transparency — its revenue, margins, and balance sheet are not publicly disclosed. The company's true financial scale and debt load are difficult to assess from the outside, and its private status means it has no public market accountability or liquidity mechanism for investors.
Invenergy's growth ambitions are constrained by the same structural bottlenecks affecting all large-scale developers: interconnection queue backlogs, permitting timelines, and transmission constraints. The company has been a vocal advocate for grid reform and faster interconnection processes, reflecting the degree to which regulatory friction limits its ability to convert its development pipeline into operating assets.
This profile was compiled from publicly available information including:
Invenergy corporate website — Company overview, project portfolio, and press releases.
Industry reporting from S&P Global, Bloomberg NEF, and Wood Mackenzie on U.S. renewable energy development.
FERC interconnection queue data and EIA-860 generator filings.
This profile is for informational purposes only and does not constitute investment advice, a recommendation, or a solicitation to buy or sell any security.