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RatedPower - Solar Irradiance Calculator Software

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Accurate solar irradiance data is the foundation of your future PV plant. You can easily upload your own TMY dataset in .csv or connect to trusted sources to ensure the bankability of your utility-scale solar project.

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Energy production estimates you and off-takers can trust

Unlock the potential and boost productivity of your development and engineering teams across the entire PV project lifecycle.



  • PVGIS
    • pvDesign is seamlessly integrated with PVGIS. It`s a free database with information about solar radiation and PV system performance.
  • NASA
    • Pull meteorological and solar-related parameters directly from NASA POWER into pvDesign. These open-source data sets are provided to assist in the design of solar-powered renewable energy systems.
  • SolarAnywhere®
    • SolarAnywhere is an accurate global solar data partner for project developers, financiers, and operators. Use bankable-grade data depth and accuracy for your next solar project directly from pvDesign.
  • Solcast
    • Solcast offers solar resource assessment and forecasting data for irradiance and PV power. Built using a global fleet of weather satellites.
  • Solargis
    • Solargis is the energy industry’s trusted source for solar data, software, and expertise. Solargis data has helped develop 500+ GW of assets worldwide and is used for monitoring and forecasting solar power plants with a combined capacity of 100+ GW.

Drag and drop your .csv file with TMY data. pvDesign supports:

  • SolarGIS hourly and monthly
  • SolarAnywhere hourly
  • NREL TMY3 hourly
  • PVGIS5 hourly
  • Meteonorm hourly

If you have meteorological data from other sources, you can adapt your .csv to the available templates.

  • Integrated with open-source and premium solar flux data streams
  • Upload your own irradiance data
  • Get project capacity and bankable energy yield estimates while designing
  • Full package of engineering documentation ready for your stakeholders