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Empowering Cleaner Energy Decisions
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The RETScreen International Clean Energy Project Analysis Software is a unique decision support tool developed with the contribution of numerous experts from government, industry, and academia. The software, provided free-of-charge, can be used world-wide to evaluate the energy production, life-cycle costs and greenhouse gas emission reductions for various types of energy efficient and renewable energy technologies (RETs). The software also includes product, cost and weather databases; and a detailed online user manual.

Software & Data Requirements: Microsoft® Excel 2000 or higher; Microsoft® Windows 2000 or higher; and Microsoft .NET Framework 2.0 or higher. Please make sure that the latest updates from Microsoft (www.microsoft.com) for Windows and Excel are installed on your computer.

Online User Manual & Engineering Textbook Requirements: Adobe Acrobat Reader 5.0.5 or higher.
Version 4 New 26.5 MB Included within software   File Download 12.7 MB
Version 3            
  Introduction         ---   File Download 2.6 MB
  Wind Energy Version 3.2   File Download 1.5 MB   File Download 0.9 MB   File Download 0.6 MB
  Small Hydro Version 3.2   File Download 2.4 MB   File Download 1.1 MB   File Download 1.3 MB
  Photovoltaics Version 3.2   File Download 1.7 MB   File Download 0.8 MB   File Download 0.7 MB
  Combined Heat & Power Version 3.6   File Download 7.7 MB   File Download 4.5 MB ---
  Biomass Heating Version 3.1   File Download 1.7 MB   File Download 1.0 MB   File Download 1.1 MB
  Solar Air Heating Version 3.1   File Download 1.5 MB   File Download 0.9 MB   File Download 1.2 MB
  Solar Water Heating Version 3.1   File Download 2.1 MB   File Download 0.8 MB   File Download 1.6 MB
  Passive Solar Heating Version 3.1   File Download 1.9 MB   File Download 0.8 MB   File Download 1.1 MB
  Ground-Source Heat Pumps Version 3.1   File Download 2.1 MB   File Download 0.7 MB   File Download 2.3 MB
  Arenas & Supermarkets Beta Version   File Download 4.8 MB Coming soon ---
  Simplified Analysis OPA Version   File Download 0.3 MB   File Download 0.6 MB ---
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