Data Providers
tariff_fetch can retrieve tariff data from multiple sources. Each provider has different coverage, data formats, and API conventions.
Supported Providers
| Provider | Product | Energy Types | Coverage | Data Format |
|---|---|---|---|---|
| Arcadia | Signal Tariffs API | Electricity | US utilities, comprehensive | Tariff JSON object |
| NREL | Utility Rate Database (URDB) | Electricity | US utilities | URDB JSON format |
| Rate Acuity | Web Portal | Electricity, Gas | US utilities | CSV exports |
Choosing a Provider
NREL Utility Rate Database (URDB) is free and open but may have less detailed or less frequently updated data. Good for basic rate lookups and open-source projects.
Arcadia Signal Tariffs API is the most comprehensive option for US electricity tariff data. It is paid and includes:
- Detailed rate structures with tiers, seasons, and TOU periods
- Variable rate lookups via API
- Historical tariff versions
Rate Acuity provides both electricity and gas tariffs through their web portal. It is also paid Useful when you need gas rates or prefer a different data source for validation.