- 350,000 annual updates
- 25,000+ tariffs covered
- 2 million+ tariff line items
Proof
in Action
Case Study
The electric vehicle home charging experience can raise a lot of questions for new EV drivers — when is the best time of day to charge? How much will it cost? Years of pulling up to a gas station and seeing a price per gallon listed have conditioned drivers to expect predictable fuel purchases. But the cost of home charging is a black box. That's why Ford uses our Signal API to access the world’s most comprehensive utility price database and enable new features that help their drivers save money on home charging.
Read the caseAs EV adoption accelerated, we needed a scalable solution that provides accurate data of utility rates across the US and Canada. The Signal API service enables us to help our customers charge their EV at the most cost-efficient times, reinforcing one of the value propositions of EV ownership.

Key Product APIs
Signal API
Accesses the nation’s most powerful rate engine and tariff database to model and forecast costs for different tariffs and usage needs.
Switch API
Calculates forecasted and actual electricity costs and savings for customers of solar and storage (DER) enterprises.
Charge Cost API
Creates a clear, isolated dollar cost for each large-use charging session.
Smart Charge API
Calculates an optimized EV charging schedule to minimize cost, based on actual energy usage and rates.
Tariff Optimization API
Automatically calibrates customer selections to maintain the most cost-effective rate or rate combination — now powered by Genability.
Tariff Cost API
Surfaces a specific marginal rate ($/kWh) for a defined short-term period.
Industry in Focus
Electric vehicle manufacturers are using Spark to improve the EV ownership experience.



