Category Archives: Building Emissions

On July 31, 2023, Boston Mayor Michelle Wu signed an executive order ending the use of fossil fuels in new construction and major renovations of city-owned buildings. Although city buildings comprise a small percentage of overall carbon emissions in Boston, the new executive order aligns with larger efforts to decarbonize both publicly and privately owned buildings throughout Boston.

The executive order covers both new city buildings and renovation projects affecting 75% or more of a city building’s square footage.… More

On June 26, 2023, the Cambridge City Council voted to amend the city’s Building Energy Use Disclosure Ordinance (BEUDO) to require large non-residential buildings to reach net zero greenhouse gas emissions by 2035 and mid-size non-residential buildings to do so by 2050. The BEUDO amendment sets one of the most ambitious municipal net zero building targets in the country and establishes a new benchmark for climate-focused cities—yet questions remain as to whether these goals can actually be achieved.… More

This week, the Massachusetts Commission on Clean Heat released its final report.  The report seeks to establish a framework for a long-term reduction in emissions from heating fuels, to align with the Commonwealth’s emissions reduction target of net zero by 2050 and the 2050 Decarbonization Roadmap.

According to the 2050 Roadmap, on-site combustion of fossil fuels in the residential and commercial building sectors presently accounts for about 27% of statewide greenhouse gas emissions,… More