Interactive maps that put one question on the table and keep it honest with sources, units and limits. The first is live; the next is in progress.
Every large building's 2024 energy use on the same canvas as the city's power plants and substations. Manhattan takes 48% of the demand; Queens holds 60% of the in-city generating capacity.
27,595 buildings, 81,267 GWh of site energy — Local Law 84, calendar year 2024
81 power plants, 8.6 GW nameplate · 114 transmission substations
Layer toggles, six metrics, building-type filter, hover and click detail, ranked table, 3D
Energy maps show demand or supply, rarely both. Putting every large building's energy use next to the plants and substations that serve it shows how concentrated demand is, what powers it, and how thin the in-city margin looks. Midtown-Times Square alone uses 5,736 GWh a year.
It is the same question as siting a data centre — where is the load, where is the power, what binds them — asked of the city with the cleanest public data.
Buildings over 25,000 ft² report their energy use under New York's Local Law 84. The calendar-year 2024 disclosure is geocoded by tax lot with PLUTO and aggregated to the 2020 Neighborhood Tabulation Areas. Campus rows that repeat one total are collapsed to a single reporting unit, and site EUI outside 5–500 kBtu/ft² is dropped as a reporting error. Energy is converted at 3.412 kBtu per kWh and 29.3 kWh per therm.
Power plants carry EIA-860 nameplate capacity by fuel. Substations are the HIFLD transmission layer. Nothing is summed across the two: demand and supply sit side by side in their own units.
NYC Open Data — Local Law 84 disclosure, PLUTO and 2020 NTAs · U.S. EIA — Power Plants · HIFLD — Electric Substations · basemap tiles by OpenFreeMap, data © OpenStreetMap contributors · code and data pipeline on GitHub.
Site energy is what a building consumes, not primary energy, and district steam blurs the electricity share of large campuses. Local Law 84 covers large buildings only, about 60% of the city's floor area, so neighbourhood totals are a floor. Nameplate MW is not generation: most in-city plants are peakers that run a few hundred hours a year. The substation layer is imagery-derived (2015) and leaves out Con Edison's underground area substations.
Sep 2026 — NYC Energy Map published: neighbourhood demand, buildings, plants and substations, ranked table, 3D view.
Next — Where is Taiwan's AI data centre capacity actually going? Announced sites read against the grid that must feed them. In progress.