California net billing economics, utility rate context, and federal credit status reviewed August 2026.
In California the answer changed shape: solar alone is worth less than it used to be, and solar with a battery is worth more than most homeowners realize. Under the net billing tariff the big three utilities charge roughly 30¢ for the power you buy and credit only a fraction of that for the power you export, so the value of a system now depends on how much of its production you keep. That is a design question before it is a brand question.
A panel-only system that exports half its output is fighting the tariff. The same panels feeding a battery that carries your evenings are working with it.
See if solar pencils under NEM 3.0 for your home
The Question NEM 3.0 Actually Asks You
Old California solar was an arithmetic problem: production times retail rate. Net billing split that value in two.
- Power you consume as it is produced avoids the full retail price, which at California rates is the most valuable kilowatt-hour in America outside the islands.
- Power you export earns an export credit far below retail, often in the single-digit cents depending on hour and season.
So the worth-it question becomes: what share of your production can you actually use? Households home during the day keep more. Everyone else keeps more only with storage. This is why our California installer bench is ranked on battery fluency, and why a proposal that never mentions your evening load is not modeling your house.
Who Solar Still Pays in California, and Who It Does Not
Household | Panel-only verdict | Solar + battery verdict |
|---|---|---|
Evenings-heavy usage, high bill | Weak, most production exports at low value | Strong, the battery moves cheap noon power into your expensive evening |
Home during the day, EV charging at noon | Reasonable, self-consumption is naturally high | Stronger, and adds outage protection |
Small bill, mild coastal climate | Usually not worth the roof work | Rarely pencils on savings alone |
LADWP or SMUD territory | Different rules, model separately | Municipal tariffs differ from the big three; verify before assuming NEM 3.0 math |
The Five Numbers That Decide Your California Answer
- Your retail rate and rate plan. Time-of-use pricing means when you use power matters as much as how much.
- The export rate your proposal assumed. It must be stated separately from retail. A model that values all production at retail is describing the old tariff.
- Your self-consumption share. Ask how the installer derived it from your actual usage, not a default percentage.
- The battery’s own economics. Priced as its own line, judged on the gap between retail and export value it arbitrages every day, plus the outage protection you value separately.
- The all-in price. California’s installed prices run above the national average; benchmark against what solar costs in California before financing costs bury the comparison.
The federal residential credit is $0 for systems whose installation is completed after December 31, 2025, so any purchased-system quote still subtracting 30% is stale on its face. Third-party-owned systems may access business tax treatment, which is one reason leases and PPAs are pitched hard here; read what $0-down really means in California before treating that as free money.
When to Say No in California
- Panel-only quote, evening-heavy household. The tariff will eat the savings. Either add storage or wait.
- A savings model with one blended rate. Under time-of-use net billing that is not a model, it is an average wearing a suit.
- Roof due for replacement. California roof work is expensive; sequence it first.
- A lease whose escalator outruns your utility’s rate growth. You can end up paying tomorrow’s premium for yesterday’s math.
The Battery Question, Settled
The battery is not an accessory in California; it is the difference between the two verdicts in the table above. Judge it in four steps: get the retail and export rates as two numbers, take the gap, multiply by the kilowatt-hours the battery cycles annually, and set that against its installed cost and warranty life. If it clears, the system clears. If it does not, outage protection is a real but separate reason, and it should be bought knowingly, not bundled invisibly.
Model My Self-Consumption Before Anyone Sizes My Roof
Under net billing, your usage pattern is worth more than your roof azimuth. Enter your ZIP code to see what a correctly modeled California proposal has to account for.
Get the battery-inclusive answer for your California ZIP
Frequently Asked Questions
Yes, solar is worth it in California for most households, with a battery and realistic modeling; panel-only systems now depend heavily on daytime self-consumption. California’s retail rates around 30¢ make avoided electricity extremely valuable, while exports earn far less, so the answer turns on how much production you keep.
California did not end compensation, it changed it: the net billing tariff credits exports below retail instead of one-to-one. Solar remains worth it when systems are sized to self-consumption or paired with storage, and marginal when they mostly export.
More often than anywhere else in the country. The gap between what you pay for power and what exports earn is what a battery captures every day, and it also carries selected circuits through outages. Price it as its own line and check the arithmetic rather than accepting a bundle.
It ended for homeowner-purchased systems whose installation is completed after December 31, 2025. Third-party owners may access separate business treatment, which only helps you if it lowers your lease or PPA rate.
No. The net billing tariff governs the CPUC-regulated utilities. Municipal utilities like LADWP and SMUD set their own solar terms, so model those territories on their own rules.
It names your rate plan, states the export rate separately from retail, derives your self-consumption from real usage, prices the battery as its own line, and shows the cash price beside the financed total. Missing any of those, ask why.
References & Research Sources
EcoGen America reviewed California Public Utilities Commission net billing materials, utility rate resources, municipal utility solar resources, and federal tax guidance for this article. Sources were accessed August 5, 2026, unless another publication, release, effective, or update date is listed below.
- California Public Utilities Commission (CPUC). Net Billing Tariff (NEM 3.0) Resources. State regulatory resource covering export compensation for residential solar. Accessed August 5, 2026.
- Pacific Gas and Electric (PG&E). Residential Rates and Solar Billing Resources. Utility resource covering retail rates and solar customer billing. Accessed August 5, 2026.
- Southern California Edison (SCE). Residential Rates and Solar Billing Resources. Utility resource covering retail rates and solar customer billing. Accessed August 5, 2026.
- San Diego Gas & Electric (SDG&E). Residential Rates and Solar Billing Resources. Utility resource covering retail rates and solar customer billing. Accessed August 5, 2026.
- Los Angeles Department of Water and Power (LADWP). Residential Solar Resources. Municipal utility resource covering solar terms outside CPUC jurisdiction. Accessed August 5, 2026.
- Sacramento Municipal Utility District (SMUD). Residential Solar Resources. Municipal utility resource covering solar terms outside CPUC jurisdiction. Accessed August 5, 2026.
- Internal Revenue Service (IRS). FAQs for Modification of Sections 25C, 25D, 25E, 30C, 30D, 45L, 45W and 179D under Public Law 119-21. Federal guidance confirming termination of the residential clean energy credit for installations completed after December 31, 2025. Accessed August 5, 2026.
