The new Adams' administration faces significant work and City Council skepticism as it prepares to implement Local Law 97 of 2019 (LL97), the centerpiece of New York City's Climate Mobilization Act that has been widely hailed as the nation's most aggressive building-focused greenhouse gas emissions reduction legislation. The goal of LL97 is to drop GHG emissions by 40% by 2030 and by 80% by 2050. To accomplish this, it imposes strict caps on covered buildings beginning in 2024 and becomes increasingly stringent in five-year increments. Owners who fail to achieve the reductions face stiff penalties.