Download of BlueSol 4.0.8 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular versions among the software users are 4.0 and 3.0. This program is an intellectual property of CadWare.
We recommend checking the downloaded files with any free antivirus. The program lies within Photo & Graphics Tools, more precisely 3D Design. The program's installer files are commonly found as PVDesign.exe or PVDesign2013.exe etc. You can run BlueSol on Windows 7/8/10/11 32-bit.
From the developer:
BlueSol is for the design of photovoltaic systems in every country in the world: dimensioning and optimization of the components, electrical schemes, CAD to create the planimetry, 3D visualization of the layout, customizable user documentation, verification the components.
You may want to check out more software, such as VE Power Setup, which might be related to BlueSol.