Technology
Boston Green Tech Startups Advance Battery and Carbon Projects in Local Scene
Cleantech ventures in the city have closed new rounds and joined accelerators this month as they test prototypes for urban energy systems.
How we reported this
Three Boston-based green technology startups closed seed rounds worth $8.5 million combined during the first week of July 2026.
The funding arrives while federal tax credits for clean energy projects face renewal debates in Washington, pushing local founders to lock in private capital before possible policy shifts take effect later this year.
Activity Centers on Kendall Square and Somerville Labs
Form Energy expanded its pilot line for iron-air batteries at a facility near Kendall Square, while a newer entrant called CarbonChain moved into shared lab space at Greentown Labs on 444 Somerville Avenue. Both sites now host weekly demo sessions for investors from the Seaport District.
Massachusetts Clean Energy Center data released June 30 shows cleantech firms in Greater Boston raised $312 million through the second quarter, a 14 percent increase over the same period in 2025. Average round size reached $4.2 million, with battery storage and direct-air capture drawing the largest checks.
Next Steps for Founders and Attendees
Companies still seeking capital can apply to the next Greentown Labs cohort, which closes submissions on July 25. Local events at the Venture Cafe in Cambridge on Thursday evenings offer direct introductions to the same investors who backed the recent rounds.
Founders report that prototype testing permits now move faster when projects stay inside the city’s designated innovation zones, cutting approval times from nine months to under four.