Solar Panel Cost in San Ramon, CA (2026): $2.71/W Reported
By Chad SimpsonUpdated 8 sources citedSan Ramon, Contra Costa County
San Ramon homeowners who bought their own solar systems reported a median of $2.71 per watt between January 2025 and May 2026, across 237 systems. The middle half paid $2.71 to $4.54 per watt.
A 6.61 kW system, the median size connected in San Ramon in 2025, comes to about $17,900 at that median, or $17,900 to $30,000 across the middle half.
Those are reported costs, not a quote, and no federal credit comes off a San Ramon 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
- $2.71/W
- San Ramon addresses, 237 systems
- Middle half
- $2.71 to $4.54/W
- 25th to 75th percentile
- Typical 6.61 kW system
- $17,900
- 6.61 kW × $2.71/W, before any incentive
- Same system, middle half
- $17,900 to $30,000
- size: San Ramon 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 Ramon
San Ramon's published permit fee for a home rooftop system is $450 (solarAPP+ permit design (each)). City-reviewed residential PV: $566 up to 10 kW; first battery $396; $89 issuance fee; 4.60% technology surcharge.
That is exactly the $450 limit that Government Code §66015 sets for a home system up to 15 kW.
- What San Ramon publishes: San Ramon's Master Fee Schedule for fiscal year 2026-27 lists SolarAPP+ permit designs at $450 each, and a residential photovoltaic installation reviewed by the City at $566 for a system of 10 kW or less plus $17 per additional kW. A first residential battery is $396 and each additional battery $35. The schedule also lists an $89 permit issuance fee and a 4.60 percent technology surcharge among its additional building fees.
- How to file: Yes. Contractors with an active San Ramon business license who have been added to the City's SolarAPP+ eligibility list apply for an Electrical Photovoltaic (SolarAPP) permit in the City's CSS portal, pay and return the signed permit card; inspections are scheduled in the same portal.
- Automated permit platform: SolarAPP+
Sources: City of San Ramon, SolarApp+ For Solar Installers, checked September 24, 2026; City of San Ramon, Master Fee Schedule FY26-27, Exhibit 1 (Flat Fees: Photovoltaic (PV) Installation; Residential Solar Energy Storage; Additional Fees), checked September 24, 2026; Gov. Code §66015, checked September 24, 2026. San Ramon in the California Solar Cost Index sets this fee beside every other city's.
Solar in San Ramon: installs, leases and batteries
Home solar systems connected at San Ramon addresses: 751 in 2021, 899 in 2022, 1,037 in 2023, 508 in 2024 and 500 in 2025. So connections peaked in 2023 and 2025 ran 52% below that peak. Another 198 were connected from January to May 2026.
Of the 500 systems connected in San Ramon in 2025, 23% were leased or on a PPA, so a solar company owns them, and 77% belonged to the homeowner. 58% had a battery, about as often as the 55% statewide. The median San Ramon system was 6.61 kW, and 79 companies connected at least one.
| San Ramon | Contra Costa County | Statewide | |
|---|---|---|---|
| Systems connected in 2025 | 500 | 6,343 | 145,404 |
| Leased or on a PPA | 23% | 43% | 45% |
| With a battery | 58% | 58% | 55% |
| Median system size | 6.61 kW | 6.48 kW | 6.15 kW |
| Median reported cost | $2.71/W (237) | $4.09/W (2,573) | $4.14/W (58,628) |
| Companies connecting systems | 79 | 310 | 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: PG&E
San Ramon is billed by Pacific Gas and Electric Company (PG&E). PG&E's average residential rate is 33.7¢/kWh (June 2026 (unchanged since March 2026); rate tracker).
MCE supplies generation for many San Ramon addresses while PG&E delivers and bills; your bill shows which. Source: MCE, About Us (member communities).
Before you compare proposals
The San Ramon project checks that change the decision
San Ramon charges $450 for a SolarAPP+ permit but more for a system it reviews itself, so the permit route is a real line in a San Ramon quote. The contractor also has to be on the City's own SolarAPP+ list.
Ask the same three questions
- Will the permit go through SolarAPP+ ($450) or City review ($566 up to 10 kW), and is the contractor on San Ramon's SolarAPP+ eligibility list?
- Does the quote include the battery permit, $396 for the first battery, and the $89 permit issuance fee?
- Does the bill estimate use MCE's generation credits, including its 10 percent Solar Bonus Credit, with PG&E's delivery charges?
Local checks
Two prices by route
The fiscal year 2026-27 schedule lists SolarAPP+ permit designs at $450 and a City-reviewed residential PV installation at $566 for a system of 10 kW or less, plus $17 per additional kW. Batteries are $396 for the first and $35 for each additional.
The City's SolarAPP+ list
A contractor needs an active San Ramon business license and has to ask the Permit Center to be added to the SolarAPP+ program eligibility list before applying in the CSS portal.
MCE's solar credits
MCE, which lists San Ramon as a member community, adds a Solar Bonus Credit of 10 percent of export credits and pays balances over $200 by check after the spring cash-out.
Related decisions
Local sources and limits
- City of San Ramon — SolarApp+ For Solar Installers — verified 2026-09-24. Active San Ramon business license required; contractor must be added to the SolarAPP+ program eligibility list by emailing the Permit Center; Electrical Photovoltaic (SolarAPP) permit applied for in CSS, paid, signed permit card returned; inspections in CSS.
- City of San Ramon — Master Fee Schedule FY26-27 (Exhibit 1) — verified 2026-09-24. Photovoltaic (PV) installation, residential: $566 for 10 or less (the schedule reads kWth), $17 per additional; SolarAPP+ permit designs $450 each; residential battery $396 first, $35 each additional; additional fees include an $89 permit issuance fee and a 4.60% technology surcharge on development-related applications.
- MCE — About Us (member communities) — verified 2026-09-23. MCE serves 38 member communities in Contra Costa, Marin, Napa and Solano counties; the communities named include Concord, Richmond, San Ramon and Napa. Vacaville is not among them.
- MCE — Solar Billing Plan — verified 2026-09-23. Exports credited at the Energy Export Credit value plus an MCE Solar Bonus Credit of 10% of those credits; CARE/FERA solar credit of $0.05 per kWh; Solar Storage Credit of $10 to $20 a month for enrolled batteries; annual April-to-March cash-out at Net Surplus Compensation for balances over $200, up to $5,000.
- California Energy Commission — Residential Solar Permitting Program data (SB 379) — verified 2026-09-23. Self-reported platform status per jurisdiction, data last updated August 3, 2026; the CEC says it does not certify compliance. Rows used for the Tier 3 cities: Santa Clara, Clovis, Berkeley, Concord, Richmond, San Clemente, Encinitas, San Marcos, Lakewood, Elk Grove, Mission Viejo, Victorville, Tulare, Yucaipa, Rocklin and Grass Valley (SolarAPP+); Glendale and Santa Barbara (custom platform); Saratoga and Vacaville (Symbium); Napa (without a platform); Gilroy, San Ramon, Redding and Yuba City (SolarAPP+); Windsor and Ventura (Symbium); Redwood City and Cupertino (SolarAPP+); Hollister (without a platform, deadline Sept 2024).
Before you sign
In San Ramon the middle half of reported costs spans $2.71 to $4.54 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 Ramon contract follows.
Frequently asked questions
How much does solar cost in San Ramon?
About $17,900 for a 6.61 kW system, at the $2.71 per watt median that San Ramon owners reported (237 systems, January 2025 to May 2026; middle half $2.71 to $4.54). Source: CPUC DG Stats. No federal credit applies to a San Ramon system finished in 2026.
What does a solar permit cost in San Ramon?
$450 for a home rooftop system on San Ramon's published schedule (checked September 24, 2026); the state limit is $450 up to 15 kW under Gov. Code §66015.
Which utility serves San Ramon?
Pacific Gas and Electric Company (PG&E). Its average residential rate is 33.7¢/kWh, as of June 2026 (unchanged since March 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 Ramon solar permitting — City of San Ramon, SolarApp+ For Solar Installers — checked September 24, 2026
- City of San Ramon, Master Fee Schedule FY26-27, Exhibit 1 (Flat Fees: Photovoltaic (PV) Installation; Residential Solar Energy Storage; Additional Fees) — checked September 24, 2026
- California Government Code §66015(a), residential solar permit fees — checked September 24, 2026
- MCE, About Us (member communities) — checked September 23, 2026
- PG&E average residential rate — CPUC Public Advocates Office, Q2 2026 Electric Rates Report, p.8, 20 — checked September 24, 2026
The tax, contract and permit rules every California city shares, with their statutes: California Solar Tax and Permit Rules for 2026.
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