Boston's Climatetech Home
Catalyzing climate and energy innovation in an ecosystem known for world-class research and discovery.
Where the Work Happens
Greentown's campus is nearly 100,000 square feet and is home to more than 150 member companies, making it the largest climatetech startup incubator in the world. Our operations span three buildings in Somerville, MA, offering members the labs and resources they need to innovate.
444 Somerville Avenue
Desk room for 400+ employees, 26-bench wet lab, and 10,000 sq ft of prototyping space.
28 Dane Street
33,000 sq ft facility with machine shop, electronics lab, and dedicated prototyping space.
24 Park Street
7,000 sq ft satellite location designed for Series A companies that need dedicated space.
“This is a hard place to be and not get excited, with the amount of energy and innovation that's happening.”
Labs and Shops
Machine Shop
Mills, 3D printers, laser cutter, and the equipment startups need to build their hardware.
Explore the Machine Shop
Prototyping Lab
34,000 sq ft of open-concept lab space for R&D to rapid prototyping, preparing for manufacturing and commercial development.
Explore the Prototyping Lab
Wet Lab
26-bench facility for energy storage, advanced manufacturing, and biotech startups.
Explore the Wet Lab
Electronics Lab
Dedicated space for electronics assembly, soldering, testing, and measuring.
Explore the Electronics Lab
Stanley Black & Decker Tool Shop
Tools from the brands Stanley, DEWALT, Irwin, Lenox, and Craftsman.
Explore the Stanley Black & Decker Tool Shop
Rooftop Lab
Outdoor testing and experiments that benefit from exposure to the elements.
Explore the Rooftop Lab
Battery Lab
R&D, testing, and pilot manufacturing for emerging energy-storage technologies, in partnership with The Battery Guild.
Explore the Battery LabMore Than Just Space
We know that climatetech startups need a supportive network of corporate partners, investors, industry experts, and fellow entrepreneurs to succeed, alongside a litany of hardware, software, and professional resources.
- Collaborative community of climatetech entrepreneurs
- Introductions to strategic corporate partners
- Investor Program
- Free and discounted software licenses
- Legal services from Foley Hoag and Wolf Greenfield
- Manufacturing and supply chain support via FORGE
- Trainings and Lunch + Learns
- CEO network
- Speaker Series
- Industry and market research reports
- Office hours with industry experts
- Marketing and brand promotion
- Community intranet
- Social community events
- Flexible event space
- Phone booths and conference rooms
- Outdoor courtyard and roof deck
- Shared kitchen
- Bike storage
- Managed mail and receiving
- Loading dock with waste channels
- 200 kW solar array
2026 Membership Rates
What Founders Say
“Greentown Labs is, to me, the crème de la crème. It was really important for us to be in a circle of founders, leaders, thought leaders in a space where we're trying to change the face of the industry.”
“Our technology is scientifically derisked. We were fundamentally able to test the performance of the product in the wet lab and prototyping lab so rigorously.”