San Diego Solar in 2026: SDG&E Rates and the NEM 3.0 Math

San Diego is one of the best places in the country to put solar on your roof, for two reasons that pull in the same direction: the sun is strong and steady, and San Diego Gas & Electric charges some of the highest electricity rates in the continental United States. Every kilowatt-hour your roof makes offsets an expensive one you would otherwise buy. What changed is how you are paid for the surplus you send back to the grid. New systems in California are on NEM 3.0, the Net Billing Tariff, which credits exports well below the old near-retail rate and makes a home battery far more valuable than it used to be. This page covers what solar actually costs in San Diego, how NEM 3.0 works with SDG&E, why your bill can stay high even with panels, which California incentives still apply in 2026, and how City permitting works, so you can check your address in about a minute.

Why San Diego’s SDG&E rates make solar pay fast

Solar pays quickly in San Diego because the power it replaces is unusually expensive. SDG&E’s average bundled residential rate is about 46 cents per kWh in 2026, and on its time-of-use plans the 4 to 9 pm on-peak price climbs into the 62 to 80 cent range, depending on season and plan (SDG&E TOU-DR1 rate schedule, as of April 2026). That is well above California’s average retail electricity price of about 27.6 cents per kWh (EIA, as of April 2026) and roughly two and a half times the U.S. residential average near 18 cents (EIA, as of March 2026). So every kilowatt-hour your roof makes and you use on site offsets one of the most expensive grid kilowatt-hours in the nation. A San Diego home that runs AC on warm inland afternoons, or simply carries a normal evening load at 70-plus cents a kilowatt-hour, is a strong solar candidate.

The catch is timing, and it is the whole reason this page keeps coming back to batteries. SDG&E’s highest prices land in the early evening, from about 4 to 9 pm, exactly when your panels are winding down for the day. Without storage, you make cheap power at noon and buy expensive power at dinner. That mismatch, not a lack of sunshine, is what shapes the San Diego solar decision in 2026, and it is why we walk through the numbers with and without a battery below.

Coastal or inland, your San Diego roof makes strong power

We ran live production numbers for a coastal and an inland San Diego ZIP, and both are excellent. Using NREL’s PVWatts model for a 6 kW system, a downtown and coastal address near 92101 is estimated at about 10,053 kWh a year, while an inland address near 92127 in the Rancho Bernardo area comes in slightly higher at about 10,117 kWh (NREL PVWatts, as of July 2026). The inland edge is small, a bit under one percent, and it reflects San Diego’s marine layer: the coast sees more morning cloud, the “May Gray” and “June Gloom” that burn off later near the water than they do a few miles inland. Both figures are strong, comfortably above what the same system would make in most of the country.

Your roof is not a ZIP code average, so model your own before you size a system. Pitch, orientation, and shading from trees or a neighboring two-story move these numbers up or down, and a coastal lot with afternoon sun can beat an inland roof that faces the wrong way. Run your exact address on NREL’s free PVWatts calculator to get a production estimate for your roof, then use it, and how much of that power you can use on site, to judge system size under NEM 3.0. For the statewide rules behind all of this, see our California solar guide and our primer on powering a California home with solar the right way, and to compare with the Central Valley market, see our Fresno solar guide.

How NEM 3.0 net billing works with SDG&E, and why your bill can stay high

NEM 3.0 is the single biggest change to the San Diego solar math, and it answers the question a lot of new solar owners ask: why is my SDG&E bill still high? California moved new solar customers onto the Net Billing Tariff under CPUC Decision D.22-12-056, which applies to interconnection applications submitted on or after April 15, 2023 (CPUC, as of July 2026). Under the older NEM 2.0 rules, power you exported earned close to the full retail rate. Under NEM 3.0, exports are credited at time-varying avoided-cost values, often only in the single digits of cents per kWh, while the power you buy back in the evening still costs SDG&E’s full retail price. If you export cheap midday power and then import expensive evening power, your bill can stay high even with a full roof of panels. The fix is to use your own solar rather than sell it.

A battery is what closes that gap in San Diego. Because midday exports pay so little and 4 to 9 pm power costs so much, storing your own production to run the house through the evening peak is where the value is now. That is the core reason batteries are on most new San Diego systems. If you already had solar interconnected under NEM 1.0 or NEM 2.0 before April 15, 2023, you keep those older, more generous terms for 20 years from your interconnection date, so an existing system is grandfathered (CPUC, as of July 2026). For the mechanics of how credits work, see how net metering and net billing credit your solar exports.

What a San Diego solar system costs, with and without a battery

Here is our own estimate for a representative San Diego home under NEM 3.0. The table below is an original MySolarFY calculation, not a figure lifted from another site. It uses a 6 kW system producing about 10,000 kWh a year (the live PVWatts figure above), a blended SDG&E retail value near 44 cents per kWh for power you use on site, an avoided-cost export value near 6 cents per kWh for power you send back, and typical 2026 California cash pricing of about $3.00 per watt installed, which works out to roughly $18,000 for the 6 kW system and about $13,000 more for a 13 kWh battery. It assumes no federal tax credit, because the homeowner credit ended after December 31, 2025, and it is before any income-qualified program. Your real numbers depend on your roof, your usage, and your rate plan, so treat this as an estimate and get a written quote.

Scenario (6 kW, San Diego, NEM 3.0)	Estimated cash cost, before incentives	How your solar is valued	Estimated first-year bill savings	Estimated simple payback
Solar only, no battery	About $18,000	Roughly half used on site at retail (near 44 cents), half exported at avoided cost (near 6 cents)	About $2,500	About 7 years
Solar plus a battery (about 13 kWh)	About $31,000	Most solar stored and used on site through the 4 to 9 pm peak, little low-value export	About $3,800	About 8 years, plus backup power and larger lifetime savings

How we derived first-year savings: we assume about 50 percent of your production is used on site without a battery, versus about 85 percent with a 13 kWh battery, valuing on-site use near 44 cents per kWh (blended SDG&E retail) and exports near 6 cents (avoided cost). Because SDG&E’s evening peak is so expensive, a battery that shifts use into the 4 to 9 pm window can be worth more than this simple blend suggests. Your split depends on your usage pattern and battery size.

Notice the payback is close, but what you get is not. A battery does not shorten payback dramatically at today’s prices, but it captures far more of your solar’s value under NEM 3.0, shields you from SDG&E’s most expensive peak hours, and keeps the lights on during an outage, and its lifetime savings grow as rates rise. Income-qualified households can do considerably better than these figures through the state programs in the next section. For a deeper look at storage pricing, see our breakdown of what a home battery costs, and to weigh the long-run numbers see whether solar panels are worth it.

Which California solar incentives still apply in San Diego in 2026

California has no state solar income-tax credit, so the incentives that matter are a property-tax break and two income-qualified programs. The table below shows what is active for a San Diego homeowner in 2026 and what has ended, so you can plan around real programs rather than outdated ones.

Program	What it does	Status in 2026 for a San Diego homeowner
California active solar property-tax exclusion	Keeps the added home value of a solar system out of a property-tax reassessment	Active, but sunsets January 1, 2027; the system must be installed or under construction before then to qualify (California BOE, as of 2026)
DAC-SASH (Disadvantaged Communities Single-family Solar Homes)	Up to $3 per watt upfront for income-qualified owner-occupants in disadvantaged-community census tracts	Active; SDG&E customers are eligible, but only in qualifying tracts, so it is not automatic citywide (CPUC, as of 2026)
RSSE (Residential Solar and Storage Equity)	Reported up to about $1,100 per kWh of battery plus $3,100 per kW of paired solar, income-qualified only	Open in 2026, income-qualified only; it replaced the general SGIP budgets for this group, and some regions have a waitlist (CPUC, as of 2026)
General SGIP battery rebate	Broad battery storage rebate open to most customers	Closed to new applicants at the end of 2025 (CPUC, as of 2026)
California state income-tax credit	A state credit against income tax	None; California has no personal income-tax credit for residential solar (DSIRE, as of 2026)
Federal Residential Clean Energy Credit (Section 25D)	The 30 percent federal homeowner tax credit	Ended for systems placed in service after December 31, 2025 (IRS, as of 2026)

Note: To find out whether your home is in a disadvantaged-community tract that qualifies for DAC-SASH, check your address in the state’s CalEnviroScreen tool. Eligibility is set tract by tract, so it is not automatic for the whole city, and the income-qualified programs also have household-income limits. An installer experienced with these programs, or GRID Alternatives, which administers DAC-SASH, can confirm whether you qualify before you sign anything.

What the federal tax-credit change means for San Diego homeowners

The federal homeowner credit is gone, and you should ignore any page that still says otherwise. The 30 percent federal Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, under the One Big Beautiful Bill Act, so a San Diego homeowner who completes an installation in 2026 with cash or a loan cannot claim it (IRS, as of 2026). You will still see search results and even AI answers claiming the 30 percent credit runs through 2032; that is out of date for the homeowner credit, which already ended. What matters now is the property-tax exclusion, the income-qualified programs, and the bill savings from using your own power at SDG&E’s high rates. For the full timeline, see what the federal solar tax credit change means in 2026.

One federal credit remains, but it is not the homeowner’s to claim. A separate commercial credit, Section 48E, can apply to the business that owns a leased or power-purchase-agreement system, not to the resident (IRS, as of 2026). On a lease or PPA you do not file for a federal credit yourself; the company that owns the panels does. The 25D homeowner credit, by contrast, ended after December 31, 2025.

Permitting is fast in San Diego thanks to instant online permits

One genuine local advantage: the City of San Diego issues instant, self-issued permits for most residential solar. Under its state-law-driven instant permitting program, the City’s Development Services Department lets qualifying single-family and duplex rooftop solar and solar-plus-battery systems up to 38.4 kW be self-issued online the same day, with no waiting on a plan review (City of San Diego, Information Bulletin 301, as of 2026). Projects that fall outside the instant-permit criteria still go through Development Services and typically process within days rather than weeks (City of San Diego Development Services, as of 2026). For you, that usually means a short path from a signed contract to an approved permit, as long as your installer submits a standard, code-compliant design. A larger system, a main-panel upgrade, or a coastal-overlay or historic review can add steps, so ask your installer what applies to your address.

Note for HOA and master-planned communities: Many inland San Diego neighborhoods, including parts of the 92127 area, sit inside homeowners associations. California’s Solar Rights Act limits an HOA’s ability to prohibit a residential solar system and bars restrictions that significantly raise the cost or cut the output, though an association can still set reasonable placement and aesthetic conditions (DSIRE, as of 2026). If you are in an HOA, submit your design early, keep the approval in writing, and pick an installer who has handled that community before.

Paying for solar in San Diego: cash, loan, lease, or PPA

There is no single right way to pay for solar; the best fit depends on whether you want to own the system and capture the incentives yourself, or avoid an up-front cost. A lease or PPA can mean no up-front cost for eligible homeowners, but it is a long-term agreement with monthly payments, not free solar, and the system owner, not you, would claim any incentive that goes to the owner. The table compares the common paths at a high level.

Path	Up-front cost	Who owns the system and any owner incentives	Best when
Cash purchase	Full system cost	You, the owner	You want the fastest payback and the most lifetime savings
Solar loan	Little to none, financed	You, the owner	You want ownership without paying cash up front
Lease or PPA	$0-up-front where eligible	The third-party owner	You prefer no up-front cost and a simpler, fixed monthly bill

How to choose a solar installer in San Diego

San Diego has a deep market of licensed solar companies, which is good for you because it means real competition on price and service. Rather than chasing a “best installer” list, screen any company against objective criteria:

• NABCEP certification, the industry’s professional standard for PV installers.
• A valid California Contractors State License Board (CSLB) license with the correct classification (C-46 solar or C-10 electrical).
• A clear workmanship and equipment warranty in writing.
• Real experience with SDG&E interconnection, NEM 3.0 net billing, and City of San Diego permitting, plus honest battery sizing for your evening usage.
• A written production estimate and a transparent quote built on today’s NEM 3.0 export rules, not the old NEM 2.0 economics.

MySolarFY matches you with licensed installers that serve your area so you can compare real local quotes side by side, with no obligation. To see how we research and where our figures come from, read our data and methodology, and learn more about the MySolarFY editorial team.

Check which solar programs are available at your San Diego address →

Frequently asked questions

Are solar panels worth it in San Diego in 2026? For most owner-occupied San Diego homes with decent sun, yes, and the case is strong because SDG&E’s rates are so high. Its average residential rate is about 46 cents per kWh, with on-peak up to 62 to 80 cents (SDG&E, as of April 2026), and a 6 kW system is modeled at about 10,000 kWh a year here on a live PVWatts run (NREL PVWatts, as of July 2026). Under NEM 3.0 the savings come from using your own power, often with a battery, since exports pay avoided-cost rates. Savings are not guaranteed and depend on your roof, usage, and how you pay, but the very high local rate keeps San Diego one of the strongest solar markets in the country.

Why is my SDG&E bill still high even though I have solar? Usually because of NEM 3.0 and timing. Power you export at midday is credited at low avoided-cost values, but the power you buy back during the 4 to 9 pm peak still costs SDG&E’s full retail rate, which runs 62 to 80 cents per kWh (SDG&E, as of April 2026). If your system was sized to zero out your annual kilowatt-hours under the old rules but you have no battery, you can still owe a lot for expensive evening power. A battery that stores midday solar for evening use, or right-sizing the system to your on-site usage, is what closes that gap under the Net Billing Tariff.

Do I need a battery to go solar in San Diego? You do not strictly need one, but it is what makes the NEM 3.0 rules pay. Under the Net Billing Tariff, exported power is credited well below the retail rate, so selling your midday surplus earns little (CPUC, as of July 2026). A battery stores that cheap midday solar and lets you run your home during SDG&E’s expensive evening peak instead of buying it back, and it adds backup power during an outage. Solar without a battery still saves money at these rates, but storage is where most of the new value is in San Diego.

Which incentives can a San Diego homeowner still get? California has no state solar income-tax credit, so the active benefits in 2026 are the property-tax exclusion, which keeps your solar’s added value off your property tax but sunsets January 1, 2027 (California BOE, as of 2026), and two income-qualified programs, DAC-SASH and RSSE, for eligible households in qualifying census tracts (CPUC, as of 2026). The broad SGIP battery rebate closed to new applicants at the end of 2025. Check your tract in CalEnviroScreen and your household income against the program limits to see which you qualify for.

What happened to the federal solar tax credit? The 30 percent federal Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, under the One Big Beautiful Bill Act, so a San Diego homeowner who installs in 2026 with cash or a loan cannot claim it (IRS, as of 2026). A separate commercial credit, Section 48E, can apply to leased and PPA systems, but the business that owns the system claims it, not the homeowner. Some search results and AI answers still say the 30 percent credit runs through 2032; that is out of date for the homeowner credit, which already ended.

Can I get solar with no up-front cost in San Diego? Some homeowners can, through a lease or power purchase agreement (PPA) where eligible, which can mean no out-of-pocket cost at installation in exchange for monthly payments. This is not free solar; it is a long-term agreement, typically 20 to 25 years, and total payments may exceed the cost of a cash purchase. On a lease or PPA the third-party owner, not you, owns the system and any incentive that goes to the owner, while your benefit is a lower or fixed power price. If you want to own the system and keep the property-tax exclusion and any income-qualified incentive yourself, a cash purchase or solar loan is the path that keeps them. Check what you qualify for before deciding.

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Reviewed by the MySolarFY editorial team on July 8, 2026. Figures were verified against the linked SDG&E, CPUC, California BOE, DSIRE, IRS, EIA, City of San Diego, and NREL PVWatts sources as of July 2026; SDG&E rates, NEM 3.0 export values, the SGIP, RSSE, and DAC-SASH program terms, and the property-tax exclusion deadline can change, so confirm current terms with SDG&E, the CPUC, and the City of San Diego before you decide. MySolarFY does not provide tax or financial advice; consult a licensed professional about your own situation. Learn more about the MySolarFY editorial team and how we work.

MySolarFY is a free service that matches homeowners with licensed solar installers. We are not an installer, financing company, tax advisor, or government program, and we do not provide tax advice. The federal residential solar tax credit (Section 25D) ended for expenditures after December 31, 2025, and most homeowners who install in 2026 cannot claim it, so confirm your tax situation with a professional. “No up-front cost” refers to qualifying lease or PPA financing where eligible; these agreements typically run 20 to 25 years, may include an annual price escalator, and total payments may exceed the cost of a cash purchase; on a lease or PPA the system owner, not the homeowner, owns any incentive that goes to the owner. Solar panels are not free and monthly payments apply. Production, incentives, savings, and rates vary, change over time, and are not guaranteed. See our full disclaimer.