Installing your own solar panels can be legal and cost-effective, but navigating the regulations requires careful planning. Most states allow homeowners to install solar panels themselves, provided they obtain proper permits, follow local building codes, and pass required. . By sourcing and installing your own solar equipment, you can save money, lower your carbon footprint, and learn along the way with a renewable energy system built from scratch. However, any. . DIY solar installation helps you cut costs — most homeowners save up to 10%. For its analyses, NREL uses an average system size of 7. 15 kilowatts direct-current with a 3-11 kilowatt range.
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