Two things changed that make most solar advice you'll find online out of date, and you should know both before anyone quotes you.
NEM 3.0. Since April 2023, California credits the solar you export to the grid at the utility's avoided-cost rate rather than the retail rate — a great deal less than what you pay for the same electricity. Solar-only payback stretched out considerably as a result. What still works is using your own production yourself instead of exporting it, which is why solar and battery storage have become one conversation rather than two.
Section 25D is gone. The 30% federal residential credit on owned solar — the headline incentive for nearly two decades — terminated on 31 December 2025. For 2026 installs of owned systems it no longer applies. Third-party-owned and leased systems sit under different rules. Anyone still quoting you a 30% federal credit on an owned system is working from last year's script.
None of that makes solar a bad idea. It makes it a different calculation, and one worth doing honestly rather than optimistically. We'd rather talk you out of a system that won't pay for itself than sell you one that doesn't.
Where a C-10 contractor is worth more than a solar salesperson: the part of a solar project that goes wrong is almost never the panels. It's the electrical service. Whether your main panel can accept a backfeed at all, whether the busbar has the headroom, whether the service needs upgrading first — these decide the real cost of a project and they get discovered late by companies that only do solar. We look at them first.