Solar Savings in San Diego: What It Actually Costs and What You'll Save in 2026

San Diego is California's second-largest city with 1.4 million residents, served by SDG&E — the most expensive utility in the state at 45.7¢/kWh. Despite lower usage thanks to the mild coastal climate, SDG&E's extreme rates make solar one of the fastest-payback investments in the country.

What San Diego Residents Actually Pay for Electricity

The average San Diego household pays approximately $195 per month for electricity, or about $2,340 per year. Bills are lower than inland cities because the mild climate requires little AC — but the per-kWh rate is the highest in California.

SDG&E's average residential rate hit 45.7¢/kWh in January 2026, an 11.4% increase. Peak TOU rates reach 60-80¢/kWh. Even moderate usage at these rates produces significant bills.

Step 1: Check Your SDG&E Rate Plan (Free, 10 Minutes)

Before anything else, log into your SDG&E account and check which rate plan you're on. SDG&E has some of the highest rates in the nation. Check your TOU plan in My Account — the difference between plans can be significant, especially if you can shift usage to super off-peak hours.

If you can shift heavy electricity use (laundry, dishwasher, EV charging, pool pump) to off-peak hours (before 4 PM or after 9 PM), you can save 10-15% just by being on the right TOU plan.

Step 2: Check If You Qualify for Discounts

SDG&E offers income-based discount programs that many qualifying San Diego households haven't applied for. CARE provides a 30-35% discount on your entire bill if your household income is below certain thresholds. FERA offers an 18% discount for families of 3+ with slightly higher income limits. Check eligibility and apply at SDG&E's assistance page.

If anyone in your household relies on electricity-dependent medical equipment (CPAP, home dialysis, powered wheelchair, etc.), you may qualify for Medical Baseline, which gives you additional electricity at the lowest rate tier.

San Diego's Solar Potential

San Diego averages approximately 3,300 hours of sunshine per year with 5.7 peak sun hours per day. The city's excellent solar resource combined with the highest utility rates in California creates an exceptional solar market. You can check your specific home's solar potential for free at Google Project Sunroof.

What Solar Costs in San Diego (2026 Numbers)

The average San Diego household needs a 5 kW solar system to cover their electricity usage. Here's what that looks like across different options.

Costs are approximate based on 2026 EnergySage data for San Diego. Actual costs vary by roof, system size, and provider. PPA monthly costs include remaining utility charges ($24.15 fixed charge + any grid usage).

To compare quotes from local installers for a purchased system, EnergySage's San Diego page lets you get multiple quotes side by side. Always get at least 3 quotes before committing to any option.

HOA Rules for Solar in San Diego

Many San Diego neighborhoods have HOAs, and homeowners often worry about getting approval for solar panels. Here's what you need to know: under California's Solar Rights Act (Civil Code § 714), your HOA cannot prohibit you from installing solar panels. They can impose reasonable aesthetic restrictions (like panel placement preferences), but any restriction that increases your system cost by more than $1,000 or reduces efficiency by more than 10% is legally unenforceable.

In practice, most San Diego HOAs have streamlined their solar approval process because so many homeowners are going solar. You typically submit an architectural review application, and if the HOA doesn't respond with a written denial within 45 days, your application is deemed approved by default. If your HOA gives you pushback, the law is clearly on your side — and they can be liable for damages plus your attorney's fees if they unreasonably block your installation.

NEM 3.0 (Net Billing) and Battery Storage in San Diego

San Diego is on SDG&E's NEM 3.0 (Net Billing) tariff, which means the excess solar energy you send back to the grid earns only 5-8¢/kWh — far less than the 45.7¢+ you pay to buy it back during peak hours. This is why battery storage has become essential for maximizing savings.

With a battery, you store excess daytime solar and use it during peak evening hours (4-9 PM) when SDG&E rates are highest. A solar + battery system typically offsets 70-90% of your grid usage, compared to 40-60% with solar alone. For more detail on how this works, see our NEM 3.0 guide.

California's Self-Generation Incentive Program (SGIP) may still offer rebates for battery storage — check current availability at selfgenca.com. SGIP funds are limited and allocated first-come, first-served.

When Solar Doesn't Make Sense in San Diego

If your bill is under $70/month (possible in very mild coastal areas with minimal usage), your roof has heavy shade, or you plan to sell within 1-2 years.

San Diego-Specific Tips

Highest rates in California: At 45.7¢/kWh, SDG&E customers get the fastest payback on solar in the state. Even a modest 5 kW system produces dramatic savings.

Coastal vs. inland: San Diego neighborhoods vary significantly. Inland areas (El Cajon, Santee, Poway) are hotter with higher AC usage. Coastal areas have lower bills but still benefit from the high per-kWh rate.

Frequently Asked Questions

Is the federal solar tax credit still available?

The residential tax credit (Section 25D) expired at the end of 2025. If you buy a system outright, there is no federal credit. However, the commercial credit (Section 48E) is still available, which is how PPA providers can offer $0-down solar at rates below utility prices. See our full guide on post-tax-credit options.

The Bottom Line for San Diego

San Diego is arguably the best solar market in California — highest utility rates in the state combined with excellent sunshine. Even small systems produce strong returns.