Data and specifications

Solar resource and weather data in time series, typical meteorological year (TMY) and monthly averages

Evaluating the solar resource is crucial for any solar energy investment decision. Project developers, technical consultants, and asset managers require reliable data to make informed, high-value, low-risk decisions.

Not all satellite-derived solar irradiance data is created equal. Solcast data has very low uncertainty, is delivered rapidly (in minutes), is available in multiple formats, and includes free credit to get you started.

Solcast produces three types of solar resource and weather data: Time Series, Typical Meteorological Year (TMY), and Monthly averages. Sign up using the Solcast toolkit and get free credits so you can download some sample data, that’s relevant for you, for free, right now.

Historical and TMY Data Products

TMY

TMY data is frequently used by solar engineers, as a data input to energy system simulations.

Time Series

Solcast offers two variants of Time Series, Basic (hourly granularity only) and Extended (all time granularities from hourly down to 5 minute)

Monthly Averages

Useful during the early stages of solar site prospecting when a coarse energy estimate is acceptable, or for smaller rooftop systems.

Test now, free

Get free historical data credits when you sign up, so you can try our data for yourself. You can download data automatically within around 1 to 9 minutes of submitting your request.

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