Installing your own solar panels can be legal and cost-effective, but navigating the regulations requires careful planning. However, any. Navigate the regulations and processes for safely and legally installing your own home solar system. Costs associated with purchasing and installing a solar energy system are divided among all of the participants, who are able to buy into the shared system at a level that best. If you're installing them yourself, you might want to go with thin-film panels. However, DIY solar panels are rarely the best decision for a home, and may not be worth it for financial, legal, or. Complete Energy Independence is Achievable: Modern solar technology with 21-24% efficiency panels and advanced lithium-ion battery systems can provide 100% energy independence for most homes, even in challenging climates like Seattle where homeowners achieve 98% solar coverage.