PowerBlocks provides downloadable releases for Windows.
PowerBlock's runs inside of a "Linux like" environment. In order to provide this MSYS2 must be installed from here.
From the MSYS2 shell, install the required build tools.
From the MSYS2 shell, download and unzip the latest version of the SDK for Windows from the PowerBlocks Releases Page.
We will create a project folder and copy in the HelloWorld example.
To build it we will run PowerBlocks' export script to add the compilers and toolchain to the path and build the project.
You should now see a HelloWorld.elf inside the build/ folder of your project.