Solar Panel Cost in Riverside, CA (2026): $3.16/W County Median
By Chad SimpsonUpdated 8 sources citedRiverside, Riverside County
Homeowners in Riverside County who bought their own solar systems reported a median of $3.16 per watt between January 2025 and May 2026, across 2,968 systems. The middle half paid $2.65 to $4.43 per watt.
Riverside Public Utilities (RPU), Riverside's main utility, is not in the CPUC's interconnection data, which covers only PG&E, SCE and SDG&E. The figure above is the nearest one: Riverside County homes those three utilities serve.
A 6.48 kW system, the median size connected in Riverside County in 2025, comes to about $20,500 at that median, or $17,200 to $28,700 across the middle half.
Those are reported costs, not a quote, and no federal credit comes off a Riverside 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
- $3.16/W
- Riverside County, IOU-served homes, 2,968 systems
- Middle half
- $2.65 to $4.43/W
- 25th to 75th percentile
- Typical 6.48 kW system
- $20,500
- 6.48 kW × $3.16/W, before any incentive
- Same system, middle half
- $17,200 to $28,700
- size: Riverside County, IOU-served homes, 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.
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What a solar permit costs in Riverside
Riverside's published permit fee for a home rooftop system is $229 ($190 expedited solar energy system permit, up to 38 kW + $39 permit issuance). The regular route is $350 up to 15 kW plus $15 per additional kW; Riverside Public Utilities adds a $275 net metering review fee.
That is $221 under the $450 limit that Government Code §66015 sets for a home system up to 15 kW.
- What Riverside publishes: Riverside's Building & Safety fee schedule lists an expedited solar energy system permit, up to 38 kW, at $190, and a residential solar energy system of 15 kW or less at $350 plus $15 for each additional kW, with a $39 permit issuance fee on top. SolarAPP+ charges its own $25 processing fee. Separately, Riverside Public Utilities charges a $275 residential application and processing fee for its net energy metering initial review, effective July 1, 2026.
- How to file: Yes, for residential rooftop systems under 38 kW through SolarAPP+ and the City of Riverside Public Portal. Ground-mounted or ballasted systems, projects with a panel upgrade or derate, homes with existing panels, and any system with an existing or new battery are not eligible for SolarAPP+.
- Automated permit platform: SolarAPP+
Sources: City of Riverside, SolarAPP+ (Community & Economic Development), checked September 23, 2026; City of Riverside, Building & Safety Fee Schedule (posted PDF; no effective date printed), checked September 23, 2026; Riverside Public Utilities, Electric Rules Appendix A: Electric Fees and Charges Schedule, effective July 1, 2026 (Rule 22, net energy metering initial review), checked September 23, 2026; Gov. Code §66015, checked September 24, 2026. Riverside in the California Solar Cost Index sets this fee beside every other city's.
Solar data for Riverside: RPU is not covered
RPU customers are not in the CPUC data, so nothing in it describes most Riverside homes. It does list 828 systems connected in 2025 at addresses it records as Riverside in SCE territory; those homes buy power from SCE, not RPU.
Across Riverside County homes served by PG&E, SCE or SDG&E, 57% of 2025 systems were leased or on a PPA, 75% had a battery and the median size was 6.48 kW.
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: RPU
Riverside is billed by Riverside Public Utilities (RPU). The CPUC's average-rate reports do not cover RPU; read its own tariff and your bill.
Before you compare proposals
The Riverside project checks that change the decision
Riverside's electricity comes from the City's own utility, not SCE, so both the permit and the solar rules are set locally. Its SolarAPP+ route is narrower than in many cities, and that changes the permit fee.
Ask the same three questions
- Does the design qualify for the City's expedited SolarAPP+ permit: rooftop, under 38 kW, no battery, no panel upgrade or derate, and no existing panels?
- If a battery or a panel upgrade is part of the job, which City permit route and fee does the quote assume?
- Is the system sized within Riverside Public Utilities' limit, and does the quote account for RPU's $275 net energy metering review fee and any net meter upgrade?
Local checks
SolarAPP+ here excludes batteries
Riverside's SolarAPP+ route covers only residential rooftop systems under 38 kW with no battery, no panel upgrade or derate and no existing panels. Other projects take the regular permit, which the City's fee schedule prices at $350 for up to 15 kW against $190 for the expedited permit.
RPU sets the size limit
Riverside Public Utilities says its solar program lets a customer offset up to 100 percent of historical 12-month use, and sizes a home without a year of history at two watts per square foot of living space, including garages. The City's SolarAPP+ page states a 150 percent ceiling, so ask the installer which limit the design meets.
RPU runs its own net metering
RPU bills solar customers on its Net Energy Metering rate, where the meter tracks the net difference between the power you use and the power you send to RPU within each billing period. RPU charges for a meter upgrade if the home does not already have a net meter.
Confirm RPU serves the address
RPU publishes its electric service area as a map rather than an address lookup. Read the utility named on your bill before applying RPU's rules, or its fees, to a quote.
Related decisions
Local sources and limits
- City of Riverside — SolarAPP+ — verified 2026-09-23. SolarAPP+ only for residential rooftop systems under 38 kW; excludes ground-mount or ballasted systems, panel upgrades or derating, existing PV, and any existing or new battery; $25 SolarAPP+ fee; systems not to exceed 150% of historical annual use and must meet RPU Electric Rule 22.
- City of Riverside — Building & Safety Fee Schedule — verified 2026-09-23. Expedited solar energy system (up to 38 kW) $190; residential solar energy system up to 15 kW $350, plus $15 per additional kW; permit issuance fee $39. No effective date is printed on the posted file.
- Riverside Public Utilities — Solar Info — verified 2026-09-23. RPU bills solar customers under its Net Energy Metering rate (net difference within each billing period); systems may offset up to 100% of historical 12-month use, or 2 watts per square foot of living space including garages without history; customers pay for a meter upgrade if no net meter is installed.
- Riverside Public Utilities — Electric Fees and Charges Schedule (Appendix A), effective July 1, 2026 — verified 2026-09-23. Rule 22 distributed generation application and processing fee, net energy metering initial review: residential $275.
- Riverside Public Utilities — Service Area Maps — verified 2026-09-23. RPU publishes its electric service area as a map; the page gives no address lookup.
Before you sign
In Riverside County the middle half of reported costs spans $2.65 to $4.43 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 Riverside contract follows.
Frequently asked questions
How much does solar cost in Riverside?
About $20,500 for a 6.48 kW system, at the $3.16 per watt median that Riverside County owners reported (2,968 systems, January 2025 to May 2026; middle half $2.65 to $4.43). Source: CPUC DG Stats. No federal credit applies to a Riverside system finished in 2026.
What does a solar permit cost in Riverside?
$229 for a home rooftop system on Riverside's published schedule (checked September 23, 2026); the state limit is $450 up to 15 kW under Gov. Code §66015.
Which utility serves Riverside?
Riverside Public Utilities (RPU). It is not covered by the CPUC's average-rate reports; read its own tariff.
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
- Riverside solar permitting — City of Riverside, SolarAPP+ (Community & Economic Development) — checked September 23, 2026
- City of Riverside, Building & Safety Fee Schedule (posted PDF; no effective date printed) — checked September 23, 2026
- Riverside Public Utilities, Electric Rules Appendix A: Electric Fees and Charges Schedule, effective July 1, 2026 (Rule 22, net energy metering initial review) — checked September 23, 2026
- California Government Code §66015(a), residential solar permit fees — checked September 24, 2026
- RPU average residential rate — Riverside Public Utilities — Electric Rules & Rates — checked September 23, 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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