Sector portfolio · VC firm · United States
Alumni Ventures' Cleantech portfolio
Alumni Ventures has backed 16 Cleantech startups in rounds we track, $1.7B between them, shown by the stage each has reached. The best-funded is Pacific Fusion.
Funding by segment
- Pre-seed and seed$25M6
- Series A$993M5
- Series C and later$681M3
- Stage not reported$31M2
Where they are based
- United States13$1.7B
- United Kingdom1$1.1M
- Nigeria1$200K
United States
United Kingdom
NigeriaFounded
3 without a founding year on record.
Total raised
- Under $1M1
- $1M to $10M6
- $10M to $50M5
- $50M to $250M2
- $250M to $1B2
- $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.
13 of 16 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 States13
- United Kingdom1
- Nigeria1
Startups by country, 3 countries in all.
Segment by segment
Pre-seed and seed
6 startups · $25M raised
American SupercriticalAmerican Supercritical is an energy technology company that develops supercritical carbon dioxide (sCO2) power systems.United States$8.0M
Kodama SystemsRestoring forests for future generationsUnited States$7.0M
AirMyneAirMyne is a Direct Air Capture (DAC) company based in Berkeley, California, founded in 2022.United States$6.9M- GGGood GoodsGood Goods is a collaborative retail model for shared urban spaces.-$2.1M
Enough EnergyEnough Energy develops energy storage and power conversion technologies, including a battery-integrated EV charger for rapid charging.United Kingdom$1.1M
EarthbondWe've leveraged climate finance and AI to build a credit model that helps African businesses get reliable, affordable solar.Nigeria$200K
Series A
5 startups · $993M raised
Pacific FusionPacific Fusion was founded in 2023 to deliver commercial fusion energy to power cities, businesses and homes.United States$900M
TreehouseTreehouse is a Food and Beverage Services company.United States$35M
MantelMantel is a climate technology startup based in Cambridge, Massachusetts, focused on developing molten-salt-based carbon capture technology.United States$30M
Cambium CarbonCambium Carbon is an early-stage social enterprise startup focused on implementing systems-level natural climate solutions.United States$19M
TrashieTrashie gives people an easy and convenient way to recycle unwanted clothing, shoes, accessories, linens, and more, keeping waste United States$10M
Series C and later
3 startups · $681M raised
Lunar EnergyLunar Energy is a renewable energy company based in Mountain View, California, founded in 2020.United States$334M
ArcadiaUnited States$245M
OmnidianOmnidian is a Seattle-based renewable energy technology company founded in 2016.United States$102M
Stage not reported
2 startups · $31M raised
FreeWire TechnologiesFreeWire Technologies is a provider of ultrafast electric vehicle (EV) charging solutions that mitigate the impact on the grid.United States$29M
ItsElectricitselectric is electric vehicle charging purpose-built for drivers who park their cars on city streets.United States$2.2M
How this map is made. Every startup here works in Cleantech and has raised money in a round we track that names Alumni Ventures as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026.
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