California solar in 2026: is it still worth it?

Run a California solar quote through 2026’s rules and one thing stands out: the answer to “is it worth it” now depends on which scenario you fall into, not just whether you buy panels. The federal residential credit expired December 31, 2025, adding roughly $5,000–$7,000 back onto the out-of-pocket cost of a typical 5.5–8 kW system. Separately, NEM 3.0 already cut what your exports are worth. Stack a system without a battery against one built for self-consumption and you’ll see payback windows that differ by years, landing somewhere in a 9–13 year range. The rest of this article walks through those scenarios so you can see which one describes your roof.

The rule change behind everything: NEM 3.0

NEM 3.0 — officially the Net Billing Tariff — replaced NEM 2.0 in April 2023, and it’s the single most consequential shift in California solar policy in a decade. Under the old rules, power your panels sent to the grid was credited at close to the retail rate: roughly the same 32.99¢/kWh you’d pay to buy it back. Under the new rules, exports earn time-varying avoided-cost values that average roughly 5–8¢/kWh — near zero at midday, much higher in a handful of late-summer evening hours. A midday kWh sent to the grid now earns roughly a fifth of what NEM 2.0 paid for it, or less. Everything downstream of this — battery economics, system sizing, payback speed — traces back to that one number.

The other three fundamentals haven’t moved much. California’s residential rate sits at 32.99¢/kWh (EIA, 12-month average through July 2026), about 1.8 times the 18.01¢ national average, so every kWh you consume directly is worth a lot in avoided cost. Sun is excellent: 5.5 peak sun hours per day statewide, more in the Inland Empire and Central Valley, slightly less along the coast. And incentives are thinner than they used to be — no state income-tax credit, $0 from the expired federal credit, a property-tax exclusion on the added home value that only covers systems completed before January 1, 2027 (the 2026 extension bill stalled), and an SGIP battery rebate whose general residential budget is closed in every utility territory as of October 2026. Full detail at California solar incentives.

Scenario one: solar with no battery

Take a Sacramento home averaging $270/month in electric bills — roughly 9,800 kWh a year at 32.99¢. Under NEM 3.0 the right move is to size to your own usage, not beyond it, so an installer proposes a 5.5 kW system.

Upfront cost: 5,500 W × $2.95/W = $16,225 (estimate — prices vary by roof type, panel brand, and installer, so get itemized quotes from at least three companies). Annual production: 5.5 kW × 5.5 hours × 365 days × 0.80 real-world derate (inverter, heat, wiring, and soiling losses) ≈ 8,830 kWh — about 90% of the home’s usage.

Without a battery, figure roughly half of production gets used on-site as it’s generated and half gets exported:

• Self-consumed: 4,415 kWh × $0.3299 = **$1,455 in avoided costs** (estimate)
• Exported: ~4,415 kWh × $0.073 avg = **$320 in export credits** (estimate)
• Total estimated annual value: ~$1,780
• Simple payback: $16,225 ÷ $1,780 ≈ 9.1 years

That matches what the solar savings calculator shows for the same bill. Shift self-consumption up (someone home during the day, an EV charging at noon) and payback shortens; a house that sits empty until evening exports more and lands closer to 11–12 years. For comparison, had the 30% federal credit still applied, net cost would have been roughly $11,360 and payback about 6.4 years. Losing the credit alone adds roughly 2.7 years here.

Scenario two: solar plus a battery

Same roof, same 5.5 kW system, but now the household stores midday production instead of exporting most of it at 5–8¢/kWh and draws it down in the evening instead of buying grid power at 32.99¢.

A quality 10–13.5 kWh home battery adds roughly $11,000–$15,000 to system cost at 2026 prices (EnergySage’s first-half 2026 marketplace data put storage around $1,130/kWh). SGIP used to offset a meaningful chunk of that, but as of October 2026 the general residential storage budget is closed in every territory, the Equity Resiliency budget is closed too, and only the low-income solar-plus-storage equity tier is open or waitlisted. Budget for the battery at full price.

With self-consumption pushed to 75–85%, the same panels could deliver an estimated $2,350–$2,575 per year in value, bringing combined solar-plus-storage payback to roughly 11–13 years on a $27,500–$31,500 total. That’s slower than solar alone — the battery carries its own cost — and evening time-of-use pricing can improve it somewhat. What the battery buys is backup power during outages and protection from evening peak rates, on top of capturing more value from every kWh the panels produce.

Scenario three: leasing instead of buying

If the $16,000-plus upfront cost is the barrier, a lease or PPA is worth pricing. You won’t own the system and won’t receive any direct tax credit, but the solar company can still claim the commercial §48E credit on systems that began construction before July 4, 2026 or are placed in service by December 31, 2027, and may pass some of that through as a lower monthly payment than your current utility bill. Read the rate-escalator clause before signing — that’s where the long-term cost of a lease usually hides.

Where each scenario points

If you own your home, plan to stay 10-plus years, carry bills of $200+/month, and have a clean south- or west-facing roof, scenario one or two applies directly to you, and the math favors buying. Size the system tightly to your own consumption, shift what load you can into daylight hours, and add a battery if backup matters to you, and you recover much of what NEM 3.0 took away. If you’re planning to sell within 3–5 years, a full payback is unlikely to complete before the sale — lease terms or disclosure to the buyer are the more realistic path. A heavily shaded or north-facing roof undercuts the economics regardless of which scenario you’re in. Renters should look at community solar subscriptions instead. And if cash is tight with no access to a solar loan, scenario three — the PPA — deserves a serious look before you rule solar out.

The 25-year picture doesn’t change as much as payback does

Even at a 9–13 year payback, the full system life still favors ownership. Panels carry 25-year performance warranties, and California electricity rates have risen far faster than inflation over the past decade — every increase raises the value of every kWh your panels produce going forward. Over 25 years, the scenario-one system above could generate an estimated $42,000 (flat rates) to $65,000 (rates rising 3.5% a year) in total value against its $16,225 cost, after allowing for panel degradation — a rough estimate that depends on how rates move. Use the solar savings calculator to model your own home rather than this example.

Check current solar panel cost in California to benchmark any quote against real local pricing, and ask every installer to build your savings model on NEM 3.0 export rates, not leftover NEM 2.0 assumptions. If anyone quotes a 30% federal tax credit for a 2026 purchase, that’s a hard stop — the credit doesn’t exist for systems installed this year.