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Buying solar

Every WattBarn guide filed under Buying solar. Practical, plain-English walkthroughs, ranked on what actually matters.

Close-up of dark solar panels mounted on a terracotta tile roof under a clear blue sky, with no installer or equipment visible in frame

DIY Solar Panel Installation: Costs and Risks

DIY solar panel installation explained: what you can legally do yourself, what still needs a licensed electrician, and how the real costs and savings compare.

Oct 21, 2026 · 24 min readRead the guide →

A grey electrical service panel with its door swung open beside a round glass utility meter on the pale siding of a house, in bright daylight

Buying solar

Solar Permits and Interconnection Explained

This briefing separates the two approvals a solar project needs: a building permit from the local authority and an interconnection agreement with the utility.

Aug 20, 2026 · 35 min read