Most solar websites only tell you the upside. Here are four real cases where we tell people don't buy yet — or don't buy at all. Reading this won't cost us a lead. If you fit one of these scenarios, getting our quote anyway is a waste of your 60 seconds.

Solar economics in California changed in 2023 with NEM 3.0 (now called NBT — Net Billing Tariff). Solar-only systems that paid back in 5-7 years under the old rules now take 10-14. Solar + battery is the new default. And like any home upgrade, solar doesn't make sense for everyone. We'd rather be the company that told you straight than the one that booked you anyway.

Scenario 1: Your roof gets significant shading

If trees, neighboring buildings, or your roof's orientation block more than ~30% of midday sun, your panel output drops substantially. We've seen quotes where the system was paying back over 18 years because of shade — and that's before factoring in panel degradation. Microinverters and power optimizers help recover some lost output, but they don't fix structural shade.

What to check: stand on your roof (or have an installer do an aerial drone scan) at noon on a sunny day. If more than a third of the south-facing roof surface is in shade between 10am and 2pm, solar economics get bad fast. Consider:

Trimming or removing offending trees (if your situation allows — sometimes worth it just for the natural light)
Ground-mount system if you have yard space and zoning allows (more expensive but unaffected by roof shade)
Or skip solar; investigate battery storage paired with Time-of-Use rate optimization instead

Scenario 2: Your monthly electric bill is consistently under $80

If you live alone, work outside the home, or have a small footprint with high-efficiency appliances, your annual electricity cost might be $700-1,000/year. Solar can shrink that to roughly $300-500/year. The math is real but the dollar savings are small.

A 4 kW residential system installed in California in 2026 runs about $12,000-18,000 before any incentives. Federal incentive treatment for residential solar changed at the end of 2025 — verify what currently applies to your situation with a tax professional before counting on a specific dollar figure. Even at the more generous historical credit levels, payback on a low-bill household stretches to 15-25+ years— far longer than the system's useful life.

If you're a low-bill household and want to be greener, your best dollar-for-dollar moves are usually:

A heat pump water heater (~$2K install, $200-400/year saved if you have an old electric tank)
Insulation + air sealing (high ROI in older California homes, often $1.5K-3K invested for $300-600/year off heating and cooling)
Buy renewable energy directly from your utility's green-power program (no capital outlay; small bill premium)

Scenario 3: You plan to move in fewer than 5 years

Solar adds resale value to your home, but the math is uneven:

Owned solar systems (cash or paid-off loan): typically add 3-4% to home value
Leased solar / PPA: often hurt resale value because buyers don't want to assume your lease
Solar with battery: small additional resale lift, especially in areas with PSPS shutoffs

In California specifically, third-party data (Zillow, Lawrence Berkeley National Lab) suggests owned solar adds roughly $15,000-25,000 to median home value. But you'll have spent $12,000-25,000 on the system, so the math is close to break-even at best — and worse if you used a lease or PPA.

Practical rule of thumb:

Moving in 1-3 years: skip solar. Use that capital for staging, kitchen updates, or just keeping it liquid.
Moving in 4-5 years: only if you can pay cash (no lease, no loan), AND only if your local market actively values solar at resale.

Scenario 4: You're a renter, OR your utility setup is unusual

If you rent, rooftop solar isn't your move. (Some landlords will install it; some states have community solar programs; but residential rooftop solar requires owning your roof and being there long enough to recoup the investment.)

If you own but have an unusual utility setup, NEM 3.0 changes the math:

PG&E, SCE, SDG&E customers (the three big IOUs): NEM 3.0 is in effect. Export rates dropped roughly 75% from NEM 2.0. Solar-only systems no longer pay back well; solar + battery is the new economic reality. Plan accordingly — if you can't afford the battery, the math may not work yet.
LADWP, SMUD, and other municipal utilities: most are still on net-metering equivalent to the old NEM 2.0. Math is much better. Solar-only can still work here.
Existing NEM 2.0 customers: don't change tariffs without doing the math first. You're generally grandfathered for the full 20-year period from your original interconnection. Adding panels can sometimes force a tariff change — verify before signing.

So when IS solar worth it in California?

The honest answer: solar makes financial sense in California today when most of these are true:

Monthly electric bill consistently $200+
South or west-facing roof with minimal shade (less than 20% obstruction between 10am-2pm)
Planning to stay in the home for 7+ years
You can pay cash, or qualify for a sub-7% loan
You're on a Time-of-Use rate (or willing to switch)
You're pairing with battery storage (for IOU customers under NEM 3.0)

If most of those are true, our quote is genuinely useful — get it in 60 seconds at our quote page.

If they aren't — save your time. And feel free to email us at the address in the footer if you want a second opinion on your specific situation before you commit $15K-30K. Honesty costs us nothing.

Methodology: dollar figures assume residential California systems in 2026, post-NEM 3.0 (NBT) for IOU customers. System cost ranges from CALSSA + EnergySage public data. Home value impact from Lawrence Berkeley National Lab (LBNL) studies of California single-family resale premiums. Payback math is conservative — your actual numbers depend on your specific utility, rate plan, system size, and household consumption pattern.