Boston wants to ban fossil fuels in new buildings

Banning of fossil fuel in new buildings, forcing them to rely on alternative forms of heat — chiefly electric heat pumps — has been seen as a way to begin a larger-scale transition away from fossil fuel in homes and commercial businesses. If chosen for the pilot program, Boston would become one of a small handful of major US cities to enact such a ban, along with New York City, Seattle, and Washington, D.C.

“Boston must lead by taking every possible step for climate action,” said Wu. “We are eager to carry out the intent of this state legislation and maximize its benefit by including the Commonwealth’s largest city —Boston’s participation will help deliver healthy, energy efficient spaces that save our residents and businesses on utilities costs and create local green jobs that will fuel our economy for decades.”

Wu announced that the city will file a home rule petition with the state Legislature, making it eligible to take part in the pilot, which exempts labs and medical facilities from a ban. The Wu administration also will start the process of talking with the community, business interests, environmental groups, and others to define what a ban would look like in Boston, including setting the bounds of a multi-year timeline to phase out fossil fuels.

Banning fossil fuels from new buildings would help Boston to take a bite out of its biggest source of emissions. The on-site burning of fossil fuels accounts for more than a third of greenhouse gas emissions in Boston, according to the city. And compared to getting existing buildings off of fossil fuels, which represents a logistical — and expensive— challenge, ensuring that new buildings are built climate-friendly is considered an easier task.

Wu’s announcement was met with enthusiasm from climate advocates. “We must target new buildings as some of the lowest hanging fruit, to achieve zero emissions through equitable electrification,” Michele Brooks, lead Boston organizer with the Massachusetts Sierra Club, said in a statement.

But that’s only if the state chooses Boston to be included in the pilot.

The bill signed last week by Baker gives priority to the first 10 communities to file home rule petitions, and 10 communities already have taken that step: Acton, Aquinnah, Arlington, Brookline, Cambridge, Concord, Lexington, Lincoln, Newton, and West Tisbury.

According to state Senator Michael Barrett, who was a lead negotiator of the climate bill, the city of Boston was asked to file a petition months ago, as the climate bill was being crafted, so it could secure a spot in the pilot. The city opted not to, according to a spokesperson for Wu, because it wanted to see the final bill before proceeding.

Slashing emissions from buildings represents a “real leadership opportunity” for the city — one that will be harder to achieve because of Boston’s hesitation in starting the process earlier, he said.

There is still a chance that Boston will be able to join the pilot, though. The climate bill requires that communities meet an affordable housing requirement, and it’s unclear if all of the 10 communities that have filed so far will be able to do so. They will have 18 months to meet the requirement, and if it doesn’t happen, they lose their spot.

After that, any city or town that has gotten local approval for a ban via town meeting or city council and has filed a home rule petition can try to join the ban. The state Department of Energy Resources will get to decide which communities get spots, regardless of the order in which they apply.

Boston may find itself with some competition, according to Lisa Cunningham, a Brookline architect and cofounder of ZeroCarbonMA, a group working with towns to pressure the state to enact more aggressive climate policies.

“Environmental justice communities very much want to move forward on this, and we have a few that we are working with” that could file home rule petitions, Cunningham said. There are several others working on this as well, she said.

Sabrina Shankman can be reached at sabrina.shankman@globe.com. Follow her on Twitter @shankman.