Solar Panel Cost in San Diego, CA (2026): $5.13/W Reported
By Chad SimpsonUpdated 6 sources citedSan Diego, San Diego County
San Diego homeowners who bought their own solar systems reported a median of $5.13 per watt between January 2025 and May 2026, across 4,007 systems. The middle half paid $4.04 to $6.78 per watt.
A 4.92 kW system, the median size connected in San Diego in 2025, comes to about $25,200 at that median, or $19,900 to $33,400 across the middle half.
Those are reported costs, not a quote, and no federal credit comes off a San Diego system finished in 2026: 26 U.S.C. §25D does not cover one whose installation is completed after December 31, 2025 (state and federal rules).
- Median reported cost
- $5.13/W
- San Diego addresses, 4,007 systems
- Middle half
- $4.04 to $6.78/W
- 25th to 75th percentile
- Typical 4.92 kW system
- $25,200
- 4.92 kW × $5.13/W, before any incentive
- Same system, middle half
- $19,900 to $33,400
- size: San Diego addresses, 2025 median
Source: California Distributed Generation Statistics (CPUC), Interconnected Project Sites data set, data through May 31, 2026, checked September 24, 2026. Homeowner-owned, solar-only systems of 1 to 25 kW; leases, PPAs and battery systems are left out (method). The CPUC notes these costs are not verified by the government.
California Rate Relief is a referral service. We are not a licensed contractor.
What a solar permit costs in San Diego
San Diego's published permit fee for a home rooftop system is $275.80 (inspection fee for a self-certified rooftop system, no plan-check fee). A system that needs full plan review adds a $154.20 plan-check fee.
That is $174.20 under the $450 limit that Government Code §66015 sets for a home system up to 15 kW.
- What San Diego publishes: Information Bulletin 301 publishes the actual schedule: a self-certified rooftop system (up to 38.4 kW AC, no fire-plan or structural review) costs a $275.80 first system/inverter inspection fee with no plan-check fee; a system needing full plan review costs a $154.20 plan-check fee plus the $275.80 inspection fee. Since August 8, 2023 the City self-certifies qualifying residential solar and battery permits instantly instead of routing them through staff review, which the City says previously took 7-10 days on average.
- How to file: Yes. Self-certified systems issue instantly; other applications are filed online through the Accela portal.
- Automated permit platform: City's own instant permit
Sources: City of San Diego Development Services, Information Bulletin 301, checked September 22, 2026; Gov. Code §66015, checked September 24, 2026. San Diego in the California Solar Cost Index sets this fee beside every other city's.
Solar in San Diego: installs, leases and batteries
Home solar systems connected at San Diego addresses: 7,850 in 2021, 11,574 in 2022, 13,742 in 2023, 5,865 in 2024 and 5,137 in 2025. So connections peaked in 2023 and 2025 ran 63% below that peak. Another 1,455 were connected from January to May 2026.
Of the 5,137 systems connected in San Diego in 2025, 36% were leased or on a PPA, so a solar company owns them, and 64% belonged to the homeowner. 0% had a battery, less often than the 55% statewide. The median San Diego system was 4.92 kW, and 286 companies connected at least one.
| San Diego | San Diego County | Statewide | |
|---|---|---|---|
| Systems connected in 2025 | 5,137 | 14,679 | 145,404 |
| Leased or on a PPA | 36% | 36% | 45% |
| With a battery | 0% | 0% | 55% |
| Median system size | 4.92 kW | 5.36 kW | 6.15 kW |
| Median reported cost | $5.13/W (4,007) | $4.84/W (11,130) | $4.14/W (58,628) |
| Companies connecting systems | 286 | 483 | 2,475 |
Source: CPUC DG Stats, data through May 31, 2026. Counts are home systems given permission to operate each year; a city means the service city on the application.
Your utility: SDG&E
San Diego is billed by San Diego Gas & Electric (SDG&E). SDG&E's average residential rate is 45.5¢/kWh (June 1, 2026; rate tracker).
San Diego Community Power (generation); SDG&E remains the delivery utility supplies generation for many San Diego addresses while SDG&E delivers and bills; your bill shows which.
Before you compare proposals
The San Diego project checks that change the decision
Start with one written scope. In San Diego, adding storage, structural roof work or a different property type can change the permit path as well as the price.
Ask the same three questions
- Do the proposals show the same array, battery, roof, electrical and backup-circuit scope?
- Do cash and financed offers state the total obligation, equipment and assumptions separately?
- Who owns the City permit, inspection corrections, SDG&E interconnection and permission-to-operate steps?
Local checks
Match the permit to the actual project
San Diego Bulletin 301 separates electrical, combination and building-permit paths. The self-issued route has defined property and scope limits; it is not a blanket approval path.
Read both sides of the electric bill
An enrolled San Diego Community Power account can show SDCP generation while SDG&E continues delivery and consolidated billing. Use the provider lines on the actual bill when a proposal models remaining charges.
Related decisions
Local sources and limits
- City of San Diego — Information Bulletin 301, Solar PV Systems — verified 2026-09-20. The May 2026 bulletin separates electrical, combination and building-permit paths by project scope. Its defined self-issued path applies only when every stated property, system and scope limit is met.
- San Diego Community Power — Understanding Your Bill — verified 2026-09-20. For an enrolled SDCP account, SDCP supplies generation while SDG&E continues delivery and consolidated billing. SDCP's page does not establish enrollment or a rate plan for a particular address.
Before you sign
In San Diego the middle half of reported costs spans $4.04 to $6.78 per watt, and roof, panel work, equipment and contract terms explain most of that gap. California Solar Tax and Permit Rules for 2026 covers them, and the tax, lease and disclosure rules a San Diego contract follows.
Frequently asked questions
How much does solar cost in San Diego?
About $25,200 for a 4.92 kW system, at the $5.13 per watt median that San Diego owners reported (4,007 systems, January 2025 to May 2026; middle half $4.04 to $6.78). Source: CPUC DG Stats. No federal credit applies to a San Diego system finished in 2026.
What does a solar permit cost in San Diego?
$275.80 for a home rooftop system on San Diego's published schedule (checked September 22, 2026); the state limit is $450 up to 15 kW under Gov. Code §66015.
Which utility serves San Diego?
San Diego Gas & Electric (SDG&E). Its average residential rate is 45.5¢/kWh, as of June 1, 2026.
Sources
- California Distributed Generation Statistics (CPUC), Interconnected Project Sites data set, data through May 31, 2026 — checked September 24, 2026
- CPUC, California Solar Consumer Protection Guide — checked September 24, 2026
- 26 U.S.C. §25D(h) and (e)(8)(A), residential clean energy credit — checked September 24, 2026
- San Diego solar permitting — City of San Diego Development Services, Information Bulletin 301 — checked September 22, 2026
- California Government Code §66015(a), residential solar permit fees — checked September 24, 2026
- SDG&E average residential rate — CPUC Public Advocates Office, Q2 2026 Electric Rates Report, p.8, 24 — checked November 9, 2026
The tax, contract and permit rules every California city shares, with their statutes: California Solar Tax and Permit Rules for 2026.
More for San Diego homeowners
- Official California solar resources — production data, license checks, net billing rules and incentives, from the agencies that publish them
Have your bill reviewed
Start with the utility on your bill and what you pay in a typical month. Contact details come after that. The calculators and checklists on this page stay usable without submitting anything.
California Rate Relief is a referral service. We are not a licensed contractor. California Rate Relief is compensated by a solar provider when a homeowner we refer signs an agreement. How we make money
Before you send anything
- What this is
- California Rate Relief is a private referral service. It is not a contractor, does not install or finance anything, and is not a utility, a government agency or an assistance program.
- What happens after the form
- Your project details are recorded for referral to a solar provider. The provider decides whether it can help and what it can offer; availability, design and price are determined after its own review.
- How you are contacted
- Read the consent wording before submitting. Your inquiry includes contact details for follow-up about the project; a provider decides whether it can serve it.
- Using the site without submitting
- The calculators, bill comparisons and checklists on this site work without contact details, and nothing on this page requires a submission.