Which electric utility serves a US latitude/longitude, and a summary of its published rate plans, from the OpenEI Utility Rate Database (URDB, CC0). Each plan returns the utility, rate name, customer sector, EIA utility id, fixed monthly charge, the first-tier energy rate ($/kWh), and a link to the full tariff. Use for solar/EV/storage economics, bill estimation, and "who is my utility" lookups. (For average state retail prices use energy.electricity-rates.)