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The federal government offers a large tax credit for installing solar, which can be used to offset taxes you owe when you file. The credit is currently 26% of your total project costs, including installation, but the value drops after 2022.

Solar panels are warrantied for 25 years, so that should be your benchmark for system lifespan. However, you should expect to replace a few other parts along the way: Grid-tie string inverters: 10-15 year warranty Off-grid inverters: 5-10 year warranty Batteries: 1-10 year warranty (varies widely depending on technology and model/manufacturer) When looking at lifetime […]