In 2019, New York City enacted Local Law 97 (LL97) as part of a suite of legislation aimed at combatting the threat of climate change. Given that New York City’s building stock is responsible for upwards of two-thirds of citywide greenhouse gas (GHG) emissions, LL97 specifically targets emissions emanating from the city’s largest buildings.

Through its implementation of the law, the city intends to achieve an 80 percent reduction in building emissions levels by 2050, relative to 2005 levels. 2019 N.Y.C. Local Law No. 97 §3.