If you're a homeowner looking to design and permit your own system, you can use SolarDesignTool to help with your installation, however, please note that the app is primarily geared towards professional solar installers who are already familiar with the details of PV systems design. While we're happy to offer support for use of the app itself, we're not able to offer PV training, advice on how to build your system, or permitting guidance. 

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