The RETScreen Software Suite 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 worldwide to evaluate the energy production and savings, costs, emission reductions, financial viability and risk for various types of Renewable-energy and Energy-efficient Technologies (RETs). The software (available in multiple languages) also includes product, project, benchmark, hydrology and climate databases, a detailed user manual, and a case study based college/university-level training course, including an engineering e-textbook.


Downloading and running RETScreen Software Suite on your computer will install two separate programs, RETScreen 4 and RETScreen Plus, described below.

RETScreen 4 is an Excel-based clean energy project analysis software tool that helps decision makers quickly and inexpensively determine the technical and financial viability of potential renewable energy, energy efficiency and cogeneration projects.

RETScreen Plus is a Windows-based energy management software tool that allows project owners to easily verify the ongoing energy performance of their facilities.

Click here to download RETScreen 4 (48 MB)

Click here to download RETScreen PLUS (43 MB)


System Requirements:

• Microsoft^® Excel 2000 or higher;
• Microsoft^® Windows XP or higher;
• Microsoft^® .NET Framework 4 or higher. Note that the Full Profile version must be installed, not just the Microsoft^® .NET Framework 4 Client Profile version.

Please make sure that the latest updates from Microsoft (www.microsoft.com) are installed on your computer.