Data and tools to build the solar powered future

Solar resource assessment and forecasting data for irradiance and PV power, globally. Created using satellites. Validated with surface measurements.

Contact us Try it now Historical and TMY data

Instant access to data, anywhere:
Historical, live and forecast

Solar irradiance and solar GIS data

Historical time-series and TMY data in PVSyst, SAM, TMY3 and CSV formats.
Live and forecast solar radiation and PV power available via API, updated every 10-15 minutes using satellites and real PV measurements.
Download, test and validate within minutes via the Solcast API Toolkit.
Free data credits on sign-up to get you started. No credit card required.

Our data products

Solar Radiation Data

Forecast and current solar irradiance and weather data with global coverage and real-time accuracy reporting

Historical and TMY

Historical time-series solar irradiance and meteo data, globally, in PVSyst, TMY3 and SAM formats

Utility Scale Solar Forecasts

Solar power forecasting for solar farms or solar parks, delivered via API. Share your measurements & improve. If the first 10 minutes really matters, add one or more sky cameras.

Rooftop Solar Forecasts

Solar power forecasting for rooftops - just one, or thousands. PV Tuning technologies adapt to local conditions.

Grid Aggregations

Thousands of PV systems grouped by market regions or grid assets. Forecasts and estimated actuals updated every 5 to 15 minutes.

Utility Scale Wind Forecasts

Wind power forecasting for wind farms, delivered via API. For Enterprise customers only.

Who is Solcast?

Solcast's Dr Nick Engerer pitches our company vision and capability in 5-minutes or less!

Proven, accurate, bankable data

Solcast has over 3,000 users globally, and our data has been extensively validated on all continents except Antarctica. Read more about our historical data satellite and aerosol inputs and algorithms, or learn about how we make our live and forecast data.

Sign-up for free, test in minutes

  • Smarter cloud detection
  • Aerosol tracking
  • Clear & cloudy sky calibration
Raw data
Untuned
Line chart

News

Price Flexibility at the Gym and Your Next Solar Project

What do going to the gym and purchasing historical solar radiation data online have in common? Price (in)flexibility!

Read more

How to download and test Solcast TMY and timeseries data in just minutes for FREE

Now that you have your FREE Solcast data credits - we suggest you download your own sample TMY or historical time-series file. This only takes a matter of minutes to achieve through the Solcast API Toolkit, and in this post, we're going to show you how!

Read more

Solar forecasting for solar cars

Learn about how the Eclipse X solar car team uses solar forecasting in its race strategy!

Read more

Who are our customers?

Solcast serves more than 3,000 customers with data for over 1,000,000 locations around the globe. Our data is trusted for due diligence, project finance, and the operation of electrical grids and networks in Europe, Asia, North America and more.

Selected customer profiles:

First Solar

Headquarters:Tempe, Arizona, USA
Core business:Global solar project development and operations
Employees:>4000

Neoen

Headquarters:Paris, France
Core business:Global solar project development and operation
Employees:>100

Meteocontrol GmbH

Headquarters:Augsburg, Germany
Core business:Global PV monitoring and analytics
Employees:>100

Vietnam Electricity (EVN)

Headquarters:Hanoi, Vietnam
Core business:National system operator in Vietnam
Employees:>100,000

Australian Energy Market Operator (AEMO)

Headquarters:Melbourne, Australia
Core business:National system operator in Australia
Employees:>1,000