Every Roof Counts
LiveWhat if every building in the US had one solar panel on its roof?
Search any US neighborhood, city, county, metro or state and see what a single 325-watt panel on every building would generate in a year. For the whole country the answer is 68 TWh from 152 million buildings, about 1.7% of US electricity use.
What it does
- Counts real buildings, not estimates: every structure comes from Overture Maps footprints, 2.55 billion machine-derived polygons worldwide.
- Scans the 790 GB building table once, reducing it to 158 million US centroids. Changing an assumption and re-aggregating the entire country then costs ten cents.
- Sunshine is resolved per county from NASA POWER and transposed onto a tilted roof. The same panel makes 596 kWh a year in Phoenix and 265 in Anchorage, and the model is checked against known yields for six cities.
- Every area page answers whether the panel pays for itself, using state electricity prices from the EIA: 3.2 years in Hawaii, 10.2 in Arizona.
- 42,017 searchable areas served from a 12 MB SQLite database baked into the container. No database server, and under $1 a month to run.
An illustrative estimate, not an engineering study. It does not model roof orientation, shading or structural condition, and building footprints are machine-derived.