California has the highest electricity rates in the continental US — PG&E, SCE, and SDG&E Tier 2 rates now average 28 to 34 cents per kWh. But NEM 3.0 (April 2023) changed the solar math: export credits dropped 75%. The good news — self-consumed solar still saves at the full retail rate, and battery storage now makes NEM 3.0 nearly as profitable as NEM 2.0 was. Use the free calculator below to see exactly how the numbers work for your home.
California Solar ROI Calculator
Includes NEM 3.0 impact — get your personalized payback period and 25-year savings
Calculating your California solar ROI with NEM 3.0…
NEM 3.0 vs NEM 2.0 — How the Rule Change Affects Your Payback:
Estimates use 2026 California utility rate data and NREL peak sun hour data. NEM 3.0 payback assumes 70% self-consumption, 30% export. Actual results vary by roof orientation, shading, and chosen retail electric rate plan. Get 2–3 licensed CA installer quotes before purchasing.
Solar Panel Cost for a 2,000 Sq Ft House in California
California electricity rates are the highest in the continental US — PG&E, SCE, and SDG&E Tier 2 rates average 28 to 35 cents per kWh in 2026. Every kWh your panels generate and self-consume saves significantly more than in lower-rate states. A 2,000 sq ft CA home typically uses 700 to 900 kWh per month — less than Texas because California’s mild climate reduces AC load.
| Home Size | System Size | Gross Cost | After 30% ITC | Monthly Savings (NEM 3.0) |
|---|---|---|---|---|
| Under 1,500 sq ft | 5 to 6 kW | $16,000 to $19,200 | $11,200 to $13,440 | $110 to $150 |
| 1,500 to 2,000 sq ft | 7 to 8 kW | $22,400 to $25,600 | $15,680 to $17,920 | $150 to $190 |
| 2,000 sq ft (typical) | 8 to 10 kW | $25,600 to $32,000 | $17,920 to $22,400 | $170 to $230 |
| 2,500 to 3,000 sq ft | 10 to 12 kW | $32,000 to $38,400 | $22,400 to $26,880 | $210 to $280 |
| Over 3,000 sq ft | 13 to 16 kW | $41,600 to $51,200 | $29,120 to $35,840 | $270 to $360 |
California Solar Incentives — Federal ITC + SGIP Battery Rebate + Property Tax Exemption
California offers four financial incentives for solar buyers in 2026 — one federal and three state-level. Together they can reduce your net system cost by 35 to 50% compared to the gross installation price.
California’s three major utilities have different rate structures — your utility significantly affects your solar ROI:
- SDG&E (San Diego): Highest rates in the US at $0.28 to $0.40/kWh — solar ROI is exceptional but system costs are also highest due to SD labor market. NEM 3.0 export rate ~$0.09/kWh.
- PG&E (Northern/Central CA): Tiered rates average $0.30 to $0.34/kWh for Tier 2. Fresno and Sacramento PG&E customers get the best combination of high sun hours and high savings per kWh.
- SCE (Southern CA — LA area): Time-of-use rates average $0.25 to $0.35/kWh. Evening peak hours (4 to 9 PM) at $0.40 to $0.55/kWh — battery storage is highly valuable for SCE customers under NEM 3.0.
- SMUD (Sacramento municipal): Lowest rates of major CA utilities at $0.18 to $0.24/kWh — solar ROI is still positive but payback period is longer than PG&E or SDG&E customers.
Is Solar Worth It in California After NEM 3.0? 5 Key Facts
Solar is still worth it in California in 2026 — but the strategy changed with NEM 3.0. Here are the five facts every CA homeowner needs to understand before buying a solar system today.
Here is how the five factors combine for California’s major cities under NEM 3.0:
| City | Peak Sun Hrs | Utility Rate | Payback (NEM 3.0) | 25-yr Net Gain | Verdict |
|---|---|---|---|---|---|
| Fresno | 6.0 hrs | PG&E 30 cents | 8.2 years | $34,100 | Excellent |
| San Diego | 5.7 hrs | SDG&E 35 cents | 8.8 years | $36,200 | Excellent |
| Los Angeles | 5.6 hrs | SCE 31 cents | 9.1 years | $32,800 | Excellent |
| Sacramento | 5.4 hrs | SMUD 22 cents | 10.8 years | $22,400 | Good |
| San Jose | 5.2 hrs | PG&E 31 cents | 9.6 years | $30,100 | Excellent |
| San Francisco | 5.1 hrs | PG&E 32 cents | 9.8 years | $29,400 | Good |
Frequently Asked Questions
Quick answers to the most common California solar questions for 2026.
Are solar panels worth it in California after NEM 3.0?
Yes — solar is still worth it in every major California city. While NEM 3.0 cut export credits 75%, self-consumed solar still saves at the full retail rate of 28 to 35 cents/kWh — the highest in the US. Every major CA city delivers a payback under 11 years. Adding a battery maximizes ROI by storing daytime solar for expensive 4 to 9 PM evening peak hours instead of exporting at low NEM 3.0 rates.
How much do solar panels cost for a 2,000 sq ft house in California?
A 2,000 sq ft California home typically costs $17,920 to $22,400 after the 30% federal tax credit. Gross cost before credit: $25,600 to $32,000 for the 8 to 10 kW system needed. CA systems cost more than other states due to higher labor and $500 to $1,500 in local permitting fees. Monthly savings under NEM 3.0 average $170 to $230 for this system size.
What is the SGIP rebate for solar batteries in California?
The Self-Generation Incentive Program (SGIP) pays $150 to $1,000 per kWh of battery storage. A 13.5 kWh Tesla Powerwall can receive $2,025 to $13,500 in SGIP rebates, on top of the 30% federal tax credit. Income-qualifying households get the highest tier. SGIP is administered through PG&E, SCE, SDG&E, and SoCalGas. Check sgipinfo.org for current availability — funding opens and closes periodically.
Which California city is best for solar panels in 2026?
Fresno has the fastest payback (~8 years) due to 6.0 peak sun hours/day. San Diego delivers the highest 25-year net savings ($36,000+) because SDG&E has the highest US electricity rates. LA, San Jose, and SF all deliver excellent ROI. Sacramento has the longest payback due to SMUD’s lower rates — but solar is still a positive investment there. Use the free ROI Calculator above for your city’s exact numbers.