Local Law 84 of 2009 (LL84) requires annual energy and water benchmarking data to be submitted by owners of buildings with more than 50,000 square feet. This data is collected via the Environmental Protection Agency's (EPA) Portfolio Manager website

Each property is identified by it's EPA assigned property ID, and can contain one or more tax lots identified by one or more BBLs (Borough, Block, Lot) or one or more buildings identified by one or more building identification numbers (BIN)

Please visit DOB's Benchmarking and Energy Efficiency Rating page
for additional information.

These data were prepared in compliance with the requirements of Local Law 24 of 2016 (LL24). Under LL24, the Department of Citywide Administrative Services (DCAS) is required to assess the solar photovoltaic (PV) potential of all City-owned buildings over 10,000 gross square feet once every two years. Special focus is given to identifying and quantifying potential capacity at solar-ready buildings, which are defined as buildings that have roofs that are no more than 10 years old and are in fair or good condition. The 2022 Solar-Readiness Assessment is the fourth biennial assessment pursuant to LL24. The full report is available at https://www1.nyc.gov/assets/dcas/downloads/pdf/energy/reportsandpublication/local24_2022.pdf