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. Free registration to our API Toolkit lets you access our data in just a few minutes.

Create Your Free API Toolkit Account Historical and TMY

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 5-15 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.

Sample our Global Coverage with our Map Demo

Drop a pin anywhere in the world, and set your PV specifications to see real-world sample live and forecast data.

Our data products

Solar Radiation Data

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

Utility Scale

Solar power forecasting via API with sky camera integration. Includes access to our high resolution solar radiation data.

Rooftop PV Forecasts

Solar power forecasting for installations below 1MW in size. Includes free access for your home PV system.

Grid Aggregations

Thousands of PV systems grouped by market regions or grid assets. Live and forecast data updated every 5 to 15 minutes with built-in accuracy tracking.

Historical and TMY

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

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

Let Solcast take the pain out of PV generation forecasting at your solar farm asset

Owners and operators of solar farms already have one too many things to think about. Compliance items stack up by the thousands very quickly. Utilities providing their network connections can impose new requirements without warning. Manufacturers of key components can go bankrupt and leave you without an important spare part! Don't let setting up solar forecasting technology at your asset be another pain-point. Use the Solcast API Toolkit!

Read more

Lowering uncertainty is fundamental to managing solar investment risk

The principal input to the rate of return calculation for a solar farm asset is the expected revenue generation from the solar farm. This highlights the importance of high quality solar irradiance data: revenue generation is primarily influenced by the availability of solar irradiance at that location over time.

Read more

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

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