Massachusetts town requires PV installations at all new commercial buildings

December 11, 2018
Facebook
Twitter
LinkedIn
Reddit
Email
Watertown stands as the first town in New England to require PV atop new commercial buildings. Image: Dale Cruse

A suburb outside of Boston, Massachusetts, has signed off on a new town mandate that requires all new commercial construction projects with an area larger than 10,000 square feet and all new residential buildings with ten or more housing units to feature PV energy.

In addition, renovations of existing buildings over 10,000 square feet must also add PV systems.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

The new mandate was approved unanimously by Watertown’s town council. Located less than 10 miles west of downtown Boston, Watertown stands as the first town in New England to require PV atop new commercial buildings.

As part of this mandate, a PV system equivalent to 50% of the roof area of the building, along with as 90% of uncovered areas of garages, must be developed at these sites in Watertown. The only sites exempt are projects developed in areas where there is no solar-ready zone, or the solar-ready zone is shaded for more than 50% of daylight hours annually.

Watertown may not be the only New England town to approve such a mandate, as the Massachusetts city of Cambridge, the fifth-most populated city in the state at 105,162 residents, is also considering a similar PV requirement for new construction.

Read Next

February 13, 2026
AES Indiana, a subsidiary of US utility AES Corporation, has started commercial operations at a 250MW solar-plus-storage plant in Pike County, Indiana, US.
February 13, 2026
The US Treasury’s interim Foreign Entity of Concern (FEOC) guidance is “in line with expectations” according to a US renewable energy supply analyst.
February 12, 2026
US solar EPC SOLV Energy has issued its initial public offering (IPO) on the Nasdaq Global Select Market, priced at US$25 per share.
February 12, 2026
Greenbacker has raised US$440 million in finance to support the development of the 674MW Cider solar project in the US state of New York.
Premium
February 11, 2026
PV Talk: Wood Mackenzie’s Yana Hryshko argues that MENA is emerging as a solar manufacturing hub, driven, in part, by Chinese partnerships.
February 11, 2026
The National Laboratory of the Rockies (NLR), previously known as the National Renewable Energy Lab, has laid off 134 employees.

Upcoming Events

Upcoming Webinars
February 18, 2026
9am PST / 5pm GMT
Solar Media Events
March 24, 2026
Dallas, Texas
Solar Media Events
April 15, 2026
Milan, Italy
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
October 13, 2026
San Francisco Bay Area, USA