# Who Invests With US Department of Energy: 56 Co-Investors (2026) > The 56 investors that have backed two or more of the same startups as US Department of Energy, by kind: vc firms, accelerators and government funds. Source: https://millionrounds.com/portfolio-maps/u-s-department-of-energy-co-investors (Millionrounds; every figure on the page links to its filing or article) ## VC firms 45 - [Elemental Impact](https://millionrounds.com/fund/elemental-impact) - [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) - [*MC* Massachusetts Clean Energy Center](https://millionrounds.com/fund/massachusetts-clean-energy-center) - [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) - [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) - [Techstars](https://millionrounds.com/fund/techstars) - [Lowercarbon Capital](https://millionrounds.com/fund/lowercarbon-capital) - [Climate Capital](https://millionrounds.com/fund/climate-capital) - [Evergreen Climate Innovations](https://millionrounds.com/fund/evergreen-climate-innovations) - [Safar Partners](https://millionrounds.com/fund/safar-partners) - [Energy Impact Partners](https://millionrounds.com/fund/energy-impact-partners) - [SOSV](https://millionrounds.com/fund/sosv) - [MassVentures](https://millionrounds.com/fund/massventures) - [North Bridge Venture Partners & Growth Equity](https://millionrounds.com/fund/north-bridge-venture-partners-and-growth-equity) - [Third Sphere](https://millionrounds.com/fund/third-sphere) - [Michigan Rise](https://millionrounds.com/fund/michigan-rise) - [Engine Ventures](https://millionrounds.com/fund/engine-ventures) - [*ON* One North Carolina Small Business Program](https://millionrounds.com/fund/one-north-carolina-small-business-program) - [Clean Energy Ventures](https://millionrounds.com/fund/clean-energy-ventures) - [Red Cedar Ventures](https://millionrounds.com/fund/red-cedar-ventures) - [Flybridge](https://millionrounds.com/fund/flybridge) - [Innovate UK](https://millionrounds.com/fund/innovate-uk) - [Founders Fund](https://millionrounds.com/fund/founders-fund) - [SV Angel](https://millionrounds.com/fund/sv-angel) +21 more ## Accelerators 5 - [Cleantech Open](https://millionrounds.com/fund/cleantech-open) - [MassChallenge](https://millionrounds.com/fund/masschallenge) - [Y Combinator](https://millionrounds.com/fund/y-combinator) - [Creative Destruction Lab](https://millionrounds.com/fund/creative-destruction-lab) - [Plug and Play](https://millionrounds.com/fund/plug-and-play) ## Government funds 3 - [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) - [California Energy Commission](https://millionrounds.com/fund/california-energy) - [Innovation Works](https://millionrounds.com/fund/innovation-works) ## Corporate investors 3 - [Rev1 Ventures](https://millionrounds.com/fund/rev1-ventures) - [Wells Fargo](https://millionrounds.com/fund/wells-fargo-bank-office) - [JERA](https://millionrounds.com/fund/jera) ## Segment by segment ### VC firms 45 investors - [**Elemental Impact**](https://millionrounds.com/fund/elemental-impact) VC firm United States 10 backed - [**Breakthrough Energy**](https://millionrounds.com/fund/breakthrough-energy) VC firm United States 9 backed - [*MC* **Massachusetts Clean Energy Center**](https://millionrounds.com/fund/massachusetts-clean-energy-center) VC firm United States 8 backed - [**Alumni Ventures**](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm United States 6 backed - [**Khosla Ventures**](https://millionrounds.com/fund/khosla-ventures) VC firm United States 6 backed - [**Techstars**](https://millionrounds.com/fund/techstars) VC firm United States 6 backed - [**Lowercarbon Capital**](https://millionrounds.com/fund/lowercarbon-capital) VC firm United States 5 backed - [**Climate Capital**](https://millionrounds.com/fund/climate-capital) VC firm United States 5 backed ### Accelerators 5 investors - [**Cleantech Open**](https://millionrounds.com/fund/cleantech-open) Accelerator United States 11 backed - [**MassChallenge**](https://millionrounds.com/fund/masschallenge) Accelerator United States 9 backed - [**Y Combinator**](https://millionrounds.com/fund/y-combinator) Accelerator United States 4 backed - [**Creative Destruction Lab**](https://millionrounds.com/fund/creative-destruction-lab) Accelerator Canada 3 backed - [**Plug and Play**](https://millionrounds.com/fund/plug-and-play) Accelerator United States 2 backed ### Government funds 3 investors - [**National Science Foundation**](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Government fund United States 66 backed - [**California Energy Commission**](https://millionrounds.com/fund/california-energy) Government fund United States 7 backed - [**Innovation Works**](https://millionrounds.com/fund/innovation-works) Government fund United States 2 backed ### Corporate investors 3 investors - [**Rev1 Ventures**](https://millionrounds.com/fund/rev1-ventures) Corporate investor United States 2 backed - [**Wells Fargo**](https://millionrounds.com/fund/wells-fargo-bank-office) Corporate investor United States 2 backed - [**JERA**](https://millionrounds.com/fund/jera) Corporate investor Japan 2 backed **How this map is made.** Every investor here has backed two or more of the same startups as US Department of Energy, in rounds we track. Grouped by kind, each ranked by how many startups it shares with US Department of Energy. Rebuilt nightly; updated 15 November 2026. ## More portfolio maps [All portfolios](https://millionrounds.com/portfolio-maps) [Portfolio map **US Department of Energy portfolio map** 259 startups · $38B](https://millionrounds.com/portfolio-maps/u-s-department-of-energy-portfolio-map)[Sector portfolio **US Department of Energy's Energy portfolio** 69 startups · $14B](https://millionrounds.com/portfolio-maps/u-s-department-of-energy-energy-portfolio)[Sector portfolio **US Department of Energy's Cleantech portfolio** 43 startups · $3.0B](https://millionrounds.com/portfolio-maps/u-s-department-of-energy-cleantech-portfolio)[Sector portfolio **US Department of Energy's Chemicals & Materials portfolio** 32 startups · $1.0B](https://millionrounds.com/portfolio-maps/u-s-department-of-energy-chemicals-materials-portfolio)[Sector portfolio **US Department of Energy's Manufacturing portfolio** 17 startups · $2.6B](https://millionrounds.com/portfolio-maps/u-s-department-of-energy-manufacturing-portfolio)[Sector portfolio **US Department of Energy's Big Data & Analytics portfolio** 16 startups · $19M](https://millionrounds.com/portfolio-maps/u-s-department-of-energy-big-data-analytics-portfolio) ## Raising from investors like US Department of Energy? 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