Solar · PV · energy

Weather API for solar & renewable energy

Irradiance, plane-of-array and PV-yield for any site on Earth — not just "cloud cover". Forecast generation, nowcast clipping risk, and backtest a portfolio against decades of history, all from one bearer token.

Built for PV developers, solar asset managers, EPC firms, O&M teams and energy traders.

Get a free API key Read the docs

What you get

Irradiance components, not a cloud %

GHI, DNI and DHI separated (Erbs), plus an Ineichen-Perez clear-sky reference and a clearness index — the inputs a PV model actually needs.

Plane-of-array & real power

Hay-Davies POA on your tilt/azimuth, then a wind-cooled PVWatts power estimate and a daily kWh roll-up from your kWp — set tilt, azimuth, kWp, losses and albedo per request.

Pick the model that fits your grid

Compare or pin 11 forecast models (ECMWF IFS & AIFS, GFS, HRRR, ARPEGE, AROME, GEM, MEPS, DMI, GeoSphere) — high-res where it matters, global everywhere else.

Backtest & settle against history

Multi-decade hourly/daily archives and climate normals to validate a model, settle a PPA, or size a new asset anywhere you operate.

Endpoints you’ll use

GET /v1/solar GHI/DNI/DHI, clear-sky, POA, PVWatts power + daily kWh — ?tilt/azimuth/kwp/losses/albedo.

GET /v1/forecast Hourly cloud cover, shortwave radiation, temperature & wind; ?model= to pin a source.

GET /v1/historical Decades of hourly/daily records to backtest yield and validate a model.

GET /v1/sun Sun position + UV — solar geometry for tracking and shading.

Try it

curl -H "Authorization: Bearer mtfd_YOUR_KEY" \
  "https://api.meteofeed.com/v1/solar?lat=52.10&lng=5.18&tilt=35&azimuth=180&kwp=10"

In-house PV stack — Erbs · Ineichen-Perez clear-sky · Hay-Davies POA · PVWatts
De-accumulated, physically-correct shortwave radiation (no double-counting)
Global: every sovereign state + 26 territories, one consistent JSON shape

Weather API for solar & renewable energy

What you get

Endpoints you’ll use

Try it

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