Funded Cleantech startups in Massachusetts
5 cleantech startups in Massachusetts have filed a Form D with the SEC and together report $46M raised. Equilibrium Energy has the largest latest round, at $25.7M. Amounts are as reported on the filing, not estimates.
Updated Jul 2, 2026
- Companies
- 5
- Total raised
- $46.0M
- Filings
- 5
- Median round
- $5.3M
- Cities
- 5
CompanyCityLast filingLatest round
Infinite CoolingCooling tower retrofit that captures water from the plume
Malden
Jul 2, 2026
$5.3M
Grain EcosystemSoftware for funding and certifying biochar projects
Quincy
Mar 28, 2025
$880K
Equilibrium EnergyAI tools for managing energy portfolios and trading
Boston
Feb 25, 2025
$25.7M
MacroCycle TechnologiesPlastic recycling technology
Cambridge
Jan 21, 2025
$4.0M
Glimpse EngineeringCT scanning that finds defects in battery cells
Somerville
Dec 27, 2024
$10.0M
All 5 companies · most recent filing first
Most recent filings
5All 5 companies · most recent filing first