Use Case — EV Charging Operators

Smart charging starts with real-time grid data.

EV charging operators and fleet software companies use Derapi to query grid capacity at candidate sites, optimize charge windows against 15-minute grid signals, and track EVSE interconnect permit status — all via REST API. Demand charges are billed on peak 15-minute intervals; Derapi gives you the data to avoid them.

40% Avg demand charge reduction
15min Grid signal update interval
The Problem

EV charging optimization needs real-time grid intelligence

Without Derapi
  • No programmatic access to grid congestion data — demand charge surprises at month end
  • Manual site evaluation for EVSE installations — utility capacity checks require phone calls
  • V2G eligibility varies by utility, tracked manually in spreadsheets
  • EVSE permit requirements duplicated by hand per jurisdiction
  • Smart charging logic based on time-of-use rates only, not actual grid state
With Derapi
  • 15-minute grid congestion signals feed directly into charging scheduler logic
  • Grid capacity headroom per site queryable before EVSE installation commitment
  • V2G eligibility flags maintained by Derapi across utility territories
  • EVSE permit requirements queryable by ZIP, updated as jurisdictions change
  • Smart charging reduces demand charges by ~40% for production fleet operators
Key Endpoints

Endpoints for EV charging operators

GET
/v1/grid/congestion
Real-time and forecast grid congestion signals by ZIP. Updated every 15 minutes. Use to determine optimal charge windows.
GET
/v1/ders/capacity
Available grid capacity headroom at a candidate EVSE site by ZIP or substation. Essential for siting decisions.
GET
/v1/ev/v2g-eligibility
Vehicle-to-grid (V2G) program eligibility, compensation rates, and enrollment process by utility territory.
GET
/v1/permits/evse
EVSE installation permit requirements by jurisdiction — fees, inspection requirements, utility notification rules.

Derapi saved us three months of data pipeline work. The irradiance endpoint alone replaced a whole ETL job we had running on NREL data — but the grid congestion endpoint is what really unlocked our smart charging product. We're seeing ~40% demand charge reduction for fleet customers who shift to Derapi-informed charging windows.

Priya Nandakumar
CTO, Ampere Mobility

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