Boston’s climatetech home

Greentown’s campus is nearly 100,000 square feet and is home to about 125 member companies, making it the largest climatetech startup incubator in North America.

Our operations span three buildings in Somerville, MA, offering members the labs and resources they need to innovate.

444 Somerville Avenue

Greentown’s headquarters has desk room for more than 400 employees, a 26-bench wet lab, and 10,000 square feet of prototyping lab space.

28 Dane Street

This 33,000-square-foot facility includes a machine shop, an electronics lab, and prototyping lab space for mid- to larger-sized startups.

24 Park Street

A 7,000-square-foot satellite location is home to our largest Series A member companies.

Labs and Shops

Machine Shop

Greentown’s machine shop supplies the equipment startups need to build their hardware, from mills to 3D printers to a laser cutter and more.

Explore The Machine Shop

Prototyping Lab

Our 34,000 square feet of prototyping lab space allows startups to take their technology from initial R&D to rapid prototyping while preparing for manufacturing and commercial development.

Explore The Prototyping Lab

Wet Lab

Greentown’s 26-bench wet lab is home to startups creating everything from long-duration energy storage to energy-efficient manufacturing membranes to silk coatings that extend the freshness of produce and proteins.

Explore the Wet Lab

Electronics Lab

A 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 Tool Shop

The Greentown Ecosystem + Resources

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. That’s why we work hard to help you forge the connections and get the tools you need.

  • Collaborative community of climatetech entrepreneurs
  • Introductions to strategic corporate partners
  • Investor Program
  • Free + discounted software licenses
  • Legal services from Foley Hoag and Wolf Greenfield
  • Trainings and Lunch + Learns
  • CEO network
  • Speaker Series
  • Academic + scientific articles
  • Industry + market research reports
  • Office hours
  • Marketing + brand promotion
  • Greentown community’s LinkedIn-style intranet
  • Social community events


  • Flexible event space for meetings
  • Phone booths + conference rooms
  • Outdoor courtyard
  • Roof deck
  • Shared kitchen and kitchenettes
  • Shared indoor bike storage
  • Managed mail and receiving area
  • Access to shared loading dock with sustainably designed waste channels for batteries, e-waste, packing materials, and compost
  • Two electric vehicle charging stations
  • A 200 kW solar array on our roof

Office space: $610/desk/month
Prototyping lab space: $5.25/sq. ft./month
Wet lab bench: $3,910/bench/month

2024 Startup Membership Rates

Greentown Boston

“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. There’s no better place for that than being in the Greentown community. That’s the message that I have for any founders that are in this green, clean, carbontech space.”

SaLisa Berrien

Founder and CEO of COI Energy

“Our technology is scientifically derisked, and I think this is one of those great success stories for Greentown Labs. We were fundamentally able to test the performance of the product in the wet lab and prototyping lab so rigorously that now it’s a function of maintaining that momentum as we grow out of the lab space and start producing the product to test with customers.”