Your home electrification savings API.
Estimate what going electric could save — or cost — for vehicles, water heaters, HVAC, dryers, cooktops, and ovens, using the same calculation engine and state-aware energy rates that power Denkiya.
Try it free! Up to 250 calculations /mo. Real rates, real ranges, zero hand-waving.
{
"type": "Vehicle",
"fuelType": "Gasoline",
"vehicleType": "Sedan",
"state": "CA"
}
// → 200 · x-denkiya-usage-remaining: 249
{ "api": "Denkiya Public Savings API V1",
"avg": 996.9,
"low": 834.06,
"high": 1159.74,
"savingsClass": "big-savings" }Powered by
Ship fast, build your own energy UX.
Same engine: pick the depth that matches your product!
Estimate endpoint
POST /api/public/estimateWidget-ready operating costs plus amountSaved (same field as calculate). Positive when the upgrade saves money; negative and no-savings when it costs more. Built for calculators, lead magnets, and signup CTAs you design yourself.
- Vehicles, water heaters, HVAC, dryers, cooktops, ovens
- Smart defaults (e.g. gas → most efficient electric) plus overrides
- Pairs with the live rates ticker (doesn't burn quota)
Full calculate
POST /api/public/v1/calculateThe complete engine for custom product UIs. Compare baseline fuels against electric upgrades across every supported category, with optional monthly breakdowns. amountSaved is positive when the upgrade saves money.
- Vehicles, HVAC, water heaters, dryers, cooktops, ovens
- Pick the two fuels (or upgrade paths) you want to compare
- Usage headers on successful metered responses
Built on math homeowners trust.
Denkiya's calculation engine and state-aware energy rates are already helping households decide with confidence. Your product gets that same foundation — fully documented on our methodology page.
State-aware rates
EIA-backed energy prices by state — not one national guess.
Documented methodology
Same math homeowners already rely on — fully documented.
Failed calls don't count
Only successful metered calculations use your monthly quota.
Overage, not a hard stop
Paid plans keep serving past your monthly allotment.
Start for free. Pay when you ship.
Every metered calculation counts once, resets each UTC month, and shows up in your response headers. Failed calls never count. No surprises.
What's included
| Community | Standard | Pro | Custom | |
|---|---|---|---|---|
| Price | Free | $39/mo | $199/mo | Negotiated |
| Monthly calculations | 250 | 10,000 | 100,000 | Negotiated |
| Overage | — | $5 / 1,000 | $2.50 / 1,000 | Negotiated |
| Commercial use | ||||
| Attribution | Required | Not required | Not required | Typically not |
| Full /api/public/v1/calculate | ||||
| Estimate endpoint | ||||
| Rates ticker |