Greentown HQ — Boston

Boston’s climatetech home

Greentown’s campus is nearly 100,000 square feet and is home to about 100 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

Office space: $580/month/desk
Prototyping lab space: $4.80/sq. ft./month
Wet lab bench: $3,835/bench/month

2021 Startup Membership Rates

Greentown HQ — Boston

Investor Program

Our investor program’s mission is simple: to connect our startups with the capital they need to scale. From curating investor-startup matches to facilitating pitching practice and feedback to guiding our members through grant funding opportunities, we’re committed to helping our startups navigate the fundraising process.

Want to learn more about how we can help? Get in touch!


Software + Business Resources

We know that climatetech and cleantech startups need a lot of hardware, software, and professional resources to succeed—and that costs for those add up. That’s why we work hard to get you the tools you need, whether by acquiring them ourselves or by partnering with corporates, universities, and professional service providers.

In all, Greentown members gain access to more than $1 million in member resources.

Legal services
Manufacturing connections 

Manufacturing Initiative run by our sister nonprofit FORGE


  • 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

Members-only Events

Want to learn about how to approach investors? How to work with corporates? How VCs think about capitalization tables? Greentown has your answers.

We host more than 350 internal events each year, including:

  • Lunch and Learns
  • Expert Panels
  • Networking Events
  • Industry-specific Workshops
  • Office Hours

Each event is designed to equip our members with the knowledge, resources, and connections they need to succeed. These events aim to facilitate exchanges of knowledge and build a sense of community.

“We had a hard time trying to identify spaces that suited all of our needs. Greentown is a very unique resource. We need the prototyping space and infrastructure—we do a lot of fabrication and building, we use the machine shop, we use the electronics shop, we use the 3D printers a lot. And our work is inherently biological and chemical, and so we do need the wet lab as well. There was an option to split us up among different sites, but as a small team, it’s helpful to have us all together.”