Historical and TMY Data

Overview

Solcast advances the state of the art in cloud and radiation modelling

The Solcast API provides high resolution (90m) and low uncertainty historical time series and TMY data for energy simulations and bankable solar resource assessments. All models use Solcast's proprietary cloud modelling, using high resolution cloud imagery to model clouds globally at 5 minute, 2km resolution. Ready to integrate via API.

Using our bankable time series data we have analysed the long term average solar availability, for every terrestrial location globally. This map shows that data, large scale solar projects globally, and validation data for the accuracy of Solcast data globally. To review Solcast historical data for your sites, you can create a Solcast toolkit account to access time series data for specific asset locations.

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GHI (Long-term average annual total, kWh/m2/yr)

Source: Solcast API, Solar Assets from Global Solar Power Tracker, Global Energy Monitor, Bankability Site Data from DNV
*Private site locations are approximated to another location in the same region and climate zone

Cloud Cover

Detailed global satellite observations that capture cloud cover with precision

We model local cloud cover using 1-2km grid, downscaled to 90 metre resolution to model aerosols, irradiance and terrain effects for a more precise and accurate global snapshot of historic solar irradiance.

Validation

Dataset supported by independent global validation

The data has low uncertainty and a quantified error range, making the data suitable for resource assessment, yield analysis, financial modelling, and any application requiring precision irradiance data.

Data Access

Access via API or Solcast web Toolkit

Ready to integrate solar API directly into your systems via json or csv. API uptime of 99.9% with very low latency.

Bulk extract data using the Solcast API Toolkit.

Integration

Direct integration with major PV simulation software

Full suite of weather data from leading reanalysis datasets completes the collection of 20+ parameters available.

Data coverage from 2007 to 7 days ago, from hourly to 5 minute resolution.

Data available in formats ready to import into PVsyst, SAM, PV*Sol, PlantPredict, Helioscope, + more.