The city of Boston will no longer be pursuing inclusion in a program that would allow it to ban fossil fuels from new construction.

The program was open to 10 Massachusetts municipalities, and nine of those spots have already been taken. Mayor Michelle Wu told The Boston Globe last week that she had received “clear indications that Boston would not be chosen for the one available spot,” and that it “breaks [her] heart.”

Boston was unlikely to be accepted because it is “electrically similar” to a few other communities that have already been selected, such as Cambridge, Brookline, and Arlington, a spokesperson for the state Department of Energy Resources told the Globe. This means that their infrastructures are of a similar age and face similar demands. The pilot program was designed to collect data from a diverse group of municipalities.

Kyle Murray, Massachusetts program director at the clean energy advocacy group Acadia Center, told the Globe that Boston’s new building code already does a lot to prevent fossil fuel usage in new buildings.

“[The code is] strong and will really help drive down emissions,” he told the paper. “So I still think Boston is going to do some amazing things, but still — I’m a little disappointed.”

To read the full article from Boston.com, click here.