Compare two appliances + payback
API · /energycost-api
Energy Cost API
healthy
4,490 Subscribers
Electricity cost maths as an API, computed locally and deterministically and entirely currency-agnostic. The cost endpoint works out an appliance's energy use and running cost from its power (watts or kilowatts), the hours used per day and a per-kilowatt-hour tariff — returning the kilowatt-hours and the cost per day, week, month and year, with an optional quantity of identical devices. The compare endpoint pits two appliances against each other: it computes each one's annual energy cost, the saving from the more efficient one, and — given the extra purchase price of the better model — the payback period in years and months. The convert endpoint relates watts, hours and kilowatt-hours: give any two and it returns the third, plus the cost at a tariff. Everything is computed locally and deterministically, so it is instant and private. Kilowatt-hours equal power in kilowatts times hours, and cost equals kilowatt-hours times the rate; months use 365/12 days. Ideal for energy-saving and smart-home apps, appliance comparison and retail tools, sustainability dashboards, and budgeting software. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is energy-cost maths; for battery capacity and runtime use a battery API.
api.oanor.com/energycost-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 89 ms
- Server probes · 24h
- Subscribers
- 4,490
- active
- Total calls
- 88
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 10,635 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 10,635 calls/month
- 2 req/sec
- Cost + compare + convert
- No credit card
Starter
€12.15 /month
- 20,250 calls / month
- 8 requests / second
- Hard cap (429 above quota, no overage)
- 20.25k calls/month
- 8 req/sec
- Appliance comparison + payback
- Email support
Pro
€32.05 /month
- 252,500 calls / month
- 20 requests / second
- Hard cap (429 above quota, no overage)
- 252.5k calls/month
- 20 req/sec
- Energy / sustainability pipelines
- Priority support
Mega
€70.05 /month
- 1,305,000 calls / month
- 50 requests / second
- Hard cap (429 above quota, no overage)
- 1.305M calls/month
- 50 req/sec
- Platform scale
- Dedicated SLA
Built by
Related APIs
Other APIs with overlapping tags.
Electricity Market API
Live European wholesale (day-ahead) electricity prices and the live power-generation mix, from the Fraunhofer ISE Energy-Charts public data. Electricity is one of Europe's largest traded commodities: each bidding zone (Germany, France, the Nordics, Iberia, Italy …) clears a day-ahead auction priced in EUR/MWh, and the resulting curve drives industrial costs and energy-stock moves. The price endpoint returns a zone's day-ahead price right now plus the day's min/max/average; the prices endpoint returns the full hourly day-ahead curve; the zones endpoint lists the supported bidding zones; the power endpoint returns a country's current generation mix by source with the renewable share. Read live, nothing stored. This is Europe's own wholesale-electricity price and generation layer — distinct from fuel/metal commodity feeds and from FX or equity APIs.
api.oanor.com/electricity-api
Commodities API
Live commodity futures prices as an API — the energy, grain, soft and livestock commodity complex, served from Yahoo Finance. For any commodity it returns the front-month futures price, the previous close, the absolute and percentage change on the day, the day's high and low and the 52-week high and low, with the price's currency and quoting unit (e.g. USD per barrel, US cents per bushel). Look a commodity up by name or alias (crude oil, Brent, natural gas, gasoline, corn, wheat, soybeans, coffee, sugar, cocoa, cotton, orange juice, live cattle, lean hogs and more), pull a category board (energy, grains, softs, livestock) ranked by the day's move, or get the whole board in one call. The commodity-quote layer for trading, markets and dashboard apps. Live, no key. Distinct from the precious-metals API — this is the energy, agricultural and soft-commodity complex.
api.oanor.com/commodities-api
Energy Web Chain API
Live on-chain data for Energy Web Chain — an EVM Layer 1 for energy-sector decentralised applications — via its public Blockscout explorer (no wallet, no key). The stats endpoint returns chain-wide totals (blocks, transactions, addresses, average block time, gas used); gas gives the current gas-price oracle (slow/average/fast). Blocks lists the latest blocks, and a single block resolves by height or by hash with its transaction count, gas, validator and timestamp. The address endpoint returns any account's EWT balance, nonce, contract flag and token holdings; transaction resolves a tx by hash with its from/to, value in EWT, fee, status and block. The token endpoint returns an ERC-20 token's metadata (name, symbol, decimals, total supply, holders) by contract address, and search runs a universal lookup across addresses, tokens, blocks and transactions. Gas, balances, values and fees are denominated in EWT, the native coin. Real on-chain data straight from the explorer, refreshed every call — no key. 9 endpoints. For multi-chain coverage combine with the other oanor chain APIs (Ethereum, Base, Arbitrum and more).
api.oanor.com/energyweb-api
Battery Pack API
Battery-pack design maths as an API, computed locally and deterministically — the voltage, capacity, energy, current and charge-time numbers an EV, e-bike, solar or robotics pack builder lays out a battery with. The configuration endpoint turns a series-parallel cell layout into the pack: cells in series add their voltages (the series count sets the pack voltage) and cells in parallel add their amp-hours (the parallel count sets the capacity), with the energy in watt-hours = voltage × capacity — a 13S4P pack of 3.6 V / 3.5 Ah cells is 46.8 V, 14 Ah and about 655 Wh from 52 cells, and it also reports the full-charge voltage (series × 4.2 V for Li-ion) to size the charger and BMS. The c-rate endpoint relates current to capacity both ways — give a C-rate to get the current, or a current to get the C-rate — because 1C draws or charges the whole capacity in an hour, so a 14 Ah pack at 2C is 28 A, and it returns the power if you pass the pack voltage. The charge-time endpoint gives the time to charge between two states of charge from the charge current. Everything is computed locally and deterministically, so it is instant and private. Ideal for EV and e-bike builders, solar and off-grid storage tools, robotics and drone packs, and battery-engineering apps. Pure local computation — no key, no third-party service, instant. Pack-design estimates — real cells taper on charge and sag under load. 3 compute endpoints. For runtime under a load use a battery API; for EV charging an EV-charging API.
api.oanor.com/batterypack-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Energy Cost API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Energy Cost API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Energy Cost API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Energy Cost API cost?
Energy Cost API has a free tier with 100 calls / month. Paid plans start at €12.15 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Energy Cost API GDPR-compliant?
All requests to Energy Cost API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.
Pick an endpoint from the list on the left to see its details and try it.
Code snippets
Sign up to get an API key, then call any path under your slug.
curl https://api.oanor.com/energycost-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/energycost-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/energycost-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);import requests
r = requests.get(
"https://api.oanor.com/energycost-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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