Sector portfolio · Government fund · United States
National Science Foundation's Cleantech portfolio
National Science Foundation has backed 46 Cleantech startups in rounds we track, $1.1B between them, shown by the stage each has reached. The best-funded is Heirloom.
National Science Foundation's whole portfolioNational Science Foundation's profile
- HHeirloom
Great Lakes ReNEW
Skyven Technologies
Twelve
Turntide Technologies
Altaeros Energies
Colorado-Wyoming Climate Resilience Engine
Event Horizon Telescope
TeraPore Technologies
Solvus Global
WaveArray
Smart Material Solutions
Norwich Technologies
Katz Water Technologies
NanoSepex
Aquagga, Inc.
LeapFrog Design
Nativus- AArbsource
SuperClean Glass- AAdvanceH20
Godwit Key Company
Wildlife Protection Management
T-Omega Wind
+10 more
Funding by segment
- Stage not reported$795M34
- Pre-seed and seed$15M4
- Series A$75M4
- Growth$180M2
- Series B$64M2
Where they are based
- United States39$952M
- Australia1$148M
United States
AustraliaFounded
10 without a founding year on record.
Total raised
- Under $1M25
- $1M to $10M5
- $10M to $50M9
- $50M to $250M7
- $250M to $1B0
- $1B and over0
Each dot is a startup: the year it was founded across, the total it has raised up (each line is ten times the one below). Pick a segment to pick it out.
35 of 46 startups shown; the rest have no founding year or amount on record.
- 1 to 2
- 3 to 7
- 8 to 24
- 25 to 99
- 100 and more
- United States39
- Australia1
Startups by country, 2 countries in all.
Segment by segment
Stage not reported
34 startups · $795M raised
- HHeirloomUnited States$203M
- Great Lakes ReNEWGreat Lakes ReNEW is a partnership of more than 50 institutions, including universities, technology firms, and government.United States$160M
- Skyven TechnologiesSkyven Technologies is an energy-as-a-service company with a mission to decarbonize industrial process heat.United States$145M
- TwelveTwelve offers smart payment solutions such as software modules, links, ordering solutions, internet solutions, communication & sponsorship.United States$117M
- Turntide TechnologiesTurntide Technologies develops an electric motor system designed to drive down energy consumption.United States$80M
- Altaeros EnergiesAltaeros Energies develops airborne wind turbine to produce abundant, low cost, renewable energy.United States$42M
- Colorado-Wyoming Climate Resilience EngineColorado-Wyoming Climate Resilience Engine mission is to bridge the skills gap in the climate technology sector.United States$15M
- Event Horizon TelescopeEvent Horizon Telescope is a planet-scale array of eight ground-based radio telescopes forged through international collaboration-$13M
Pre-seed and seed
4 startups · $15M raised
TransaeraTransaera is bringing comfort to billions of people while reducing the impact on climate and grid infrastructure.United States$8.2M
Singularity EnergySingularity Energy is a Boston-area technology company focused on data and software solutions for grid decarbonization in the energy sector.United States$4.5M
EELI TechnologyEELI Technology, a Silicon Valley-based mining technology company, develops Advanced Lithium Recovery solutions, making lithium prUnited States$2.0M
Phoenix Waste SolutionsPhoenix Waste Solutions is an environmental services company based in Chauvin, Louisiana, founded in 2019.United States$100K
Series A
4 startups · $75M raised
EmvolonEmvolon is a technology company that converts wasted resources into low-cost green fuelsUnited States$22M
Princeton Critical MineralsPrinceton Critical Minerals is a cleantech company that boosts lithium extraction and production from brine sources.United States$21M
AclarityAclarity, Inc.United States$17M
LC DrivesLC Drives a unique group of people who have developed both transformative and disruptive technologies for electrical rotating machines.-$15M
Growth
2 startups · $180M raised
Series B
2 startups · $64M raised
ZwitterCoZwitterCo is a leader in advanced membrane solutions for industrial and agricultural water treatment, founded in 2018 as a spinoutUnited States$58M
Noble Gas SystemsNoble Gas Systems develops gas storage and delivery systems with conformable tank technology.United States$5.7M
How this map is made. Every startup here works in Cleantech and has raised money in a round we track that names National Science Foundation as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026.
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