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GrünstromIndex

Hourly green-power forecast for German postcodes

🌦 WeatherHEALTHYchecked 4h ago
AUTH NONECORS ✓AGENT ✓HTTPS ✓COMMERCIAL ?

The Corrently GSI (Grünstromindex) endpoint forecasts the share of renewable electricity for a German postal code hour by hour, alongside wind/solar values, a CO2 estimate and an indicative energy price. Pass a zip code and get a JSON forecast array. Usage is governed by a fair-use policy, with paid tiers for higher limits.

53HOW IT'S SCORED ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: 53 · healthy
Uptime history
73.5%90 days
73.3%30 days
1072P50 · ms
4119P95 · ms
operationalpartialdownno data
Response time · last 48 checks
Fastest 448 ms, slowest 3067 ms, most recent 1712 ms.
Live response samplecaptured by our last successful check
GET https://api.corrently.io/v2.0/gsi/prediction?zip=70173

{
  "support": "If you have any question please contact dev@stromdao.com or visit https://premium.corrently.de/",
  "documentation": "https://corrently.io/books/grunstromindex",
  "forecast": [
    {
      "epochtime": 1783263600,
      "eevalue": 90,
      "ewind": 2,
      "esolar": 65,
      "gsi": 85.5,
      "co2_avg": 242.5
    }
  ]
}
Call itcurl · fetch · python
curl "https://api.corrently.io/v2.0/gsi/prediction?zip=70173"
const res = await fetch("https://api.corrently.io/v2.0/gsi/prediction?zip=70173");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://api.corrently.io/v2.0/gsi/prediction?zip=70173")
print(res.json())
Endpoints · 6HealthyFULL DOCS ↗
Monitored path responding — GET /gsi/prediction?zip=701731072 mschecked 4h ago
GET/gsi/prediction?zip=70173PROBED

Hourly green-power forecast for German postcodes

GET/gsi

Gsi — documented GET route.

GET/gsi/1

Gsi details by ID (example: 1).

GET/gsi?limit=10

Gsi — documented GET route.

GET/gsi/search?q=test

Search by query parameters.

GET/gsi/prediction?limit=5

Prediction — documented GET route.

Machine-readable spec

We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.

Response-shape history

Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.

GrünstromIndex: common questions

Is GrünstromIndex free to use?

Yes — GrünstromIndex is a free weather API. Free tier: Free under fair-use policy. Whether the free tier allows commercial use is unclear — check the provider docs.

Does GrünstromIndex need an API key?

No — GrünstromIndex needs no API key or signup. You can call it straight away; rate limits still apply (Fair-use (paid tiers for higher limits)).

Can I call GrünstromIndex from the browser?

Yes — GrünstromIndex returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is GrünstromIndex up right now?

As of our last scheduled check, GrünstromIndex is healthy with 73.5% uptime over 90 days and a 1072 ms median response. We re-probe it every sweep — the status badge and uptime chart above always show the latest.