Data provenance
Sources
U.S. rates come from OpenEI. International coverage uses regulator publications and direct supplier tariff data, always kept in its original currency.
OpenEI U.S. Utility Rate Database
Publisher: National Renewable Energy Laboratory and U.S. Department of Energy. Accessed . The dataset page provides bulk and API access. Every rate page links the specific record used.
International sources
- Ontario Energy Board for regulated TOU and ultra-low overnight prices.
- Octopus Energy tariff API for daily Agile Octopus half-hourly UK prices.
- France's Commission de régulation de l'énergie for regulated HPHC and Tempo prices.
- Electric Ireland for the Home Electric+ Night Boost offer.
Coverage limits
The ZIP lookup currently includes four San Diego ZIP codes. International pages cover selected transparent consumer plans, not every supplier or household. Always confirm eligibility, standing charges, taxes, discounts, and assigned off-peak hours with the original provider.