The Global Center for Cleantech Innovation 

444 Somerville Ave., Somerville, MA 02143

Greentown Labs in located in the heart of Union Square in Somerville, MA. This hidden gem community is just three miles north of Boston and a mile from Kendall Square, MIT, Harvard and Tufts University. Union Square is buzzing with entrepreneurs, artists and makers, and easily accessible by foot, bike or public transportation.

As a community that promotes clean technology and renewable energy, we encourage all visitors to consider sustainable transportation options when visiting Greentown Labs. We have a spacious bike room and lots of high-fives for everyone who takes advantage of alternate transportation. Zipcars and Hubway bikes are just around the corner with the two closest Hubway stations at Conway Park and Union Square.

Please note: Greentown Labs has extremely limited parking and cannot guarantee spaces will be available for visitors.

Questions? Give us a call! 888-954-6836




We love to welcome visitors at Greentown Labs! If parking is needed, we ask that visitors coordinate parking spot reservations with their hosts. Once your host has notified you of your parking spot number, you can check in at reception to retrieve a tag for your dashboard and park in the space matching the tag number. Please return that dashboard tag to reception at the end of your visit. We also kindly ask that you honor the time of your reservation and move your car once your time slot expires.

Currently, we have parking spots numbered 1-5 around the southeast corner (back of the building) of 444 Somerville Ave. and marked by “Greentown Labs Visitor Parking” standing metal signs. The 5 visitor parking spots are the three in the East side alley of 444, the side closest to Market Basket, with an additional two spots on the back side of 444 along the main alley.

Interested in joining Greentown Labs?

Our team is always happy to host early-stage energy and cleantech companies that are interested in joining our community. If you’d like to schedule a private tour with our Recruitment Manager, Cayman Somerville, please contact her here.

Large, Private Tour Groups

Greentown Labs is proud to host more than 10,000 visitors from around the world every year and starting in April 2018, our team will be able to accomodate private tour groups once again! Our community continues to settle in to our Global Center and we appreciate your patience as our team focuses on helping our members acclimate to their new home. Please check back again in April and if your tour request is for May-December 2018, please contact us here to schedule in advance. Cheers!

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