Sources reviewed · 3 regulation sources
What to know in California.
CPUC Rule 21 addresses technical, operating, metering and application requirements for connections within CPUC jurisdiction, including non-export facilities.
The CPUC Solar Consumer Protection Guide includes Solar Billing Plan information and required consumer documents for covered interconnection applications.
Rule 21 is not a single tariff for every California utility. CPUC lists each jurisdictional utility’s implementation; municipal utilities and FERC-jurisdictional projects need the appropriate separate process.
Who provides electricity here?
Narrow possible delivery utilities by ZIP or confirm yours
Find the delivery utility on your electric bill first. A retail supplier or on-site solar seller may be a different company; your delivery utility handles the local grid connection.
Statewide service-area map includes utilities beyond CPUC-regulated investor-owned utilities. Confirm the serving distribution utility and any separate supply provider.
Electric Utility Service Areas — California Energy CommissionBrowse 94 reported provider records in California
94 records
Electric delivery utilities 61
Pacific Gas & Electric Co.Investor Owned · EIA 14328Reported counties (50)
Alameda, Alpine, Amador, Butte, Calaveras, Colusa, Contra Costa, El Dorado, Fresno, Glenn, Humboldt, Kern, Kings, Lake, Lassen, Madera, Marin, Mariposa, Mendocino, Merced, Modoc, Monterey, Napa, Nevada, Placer, Plumas, Sacramento, San Benito, San Bernardino, San Diego, San Francisco, San Joaquin, San Luis Obispo, San Mateo, Santa Barbara, Santa Clara, Santa Cruz, Shasta, Sierra, Siskiyou, Solano, Sonoma, Stanislaus, Sutter, Tehama, Trinity, Tulare, Tuolumne, Yolo, Yuba
Southern California Edison CoInvestor Owned · EIA 17609Reported counties (16)
Fresno, Imperial, Inyo, Kern, Kings, Los Angeles, Madera, Mono, Orange, Riverside, San Bernardino, San Diego, Santa Barbara, Tulare, Tuolumne, Ventura
Los Angeles Department of Water & PowerMunicipal · EIA 11208Reported counties (2)
Inyo, Los Angeles
San Diego Gas & Electric CoInvestor Owned · EIA 16609Reported counties (2)
Orange, San Diego
Sacramento Municipal Util DistPolitical Subdivision · EIA 16534Reported counties (3)
Placer, Sacramento, Yolo
- Imperial Irrigation DistrictPolitical Subdivision · EIA 9216
Reported counties (3)
Imperial, Riverside, San Diego
- City of Anaheim - (CA)Municipal · EIA 590
Reported counties (1)
Orange
- Modesto Irrigation DistrictPolitical Subdivision · EIA 12745
Reported counties (2)
San Joaquin, Stanislaus
- City of Riverside - (CA)Municipal · EIA 16088
Reported counties (1)
Riverside
- Turlock Irrigation DistrictPolitical Subdivision · EIA 19281
Reported counties (3)
Merced, Stanislaus, Tuolumne
- City of Glendale - (CA)Municipal · EIA 7294
Reported counties (1)
Los Angeles
- City of Roseville - (CA)Municipal · EIA 16295
Reported counties (1)
Placer
- City of Pasadena - (CA)Municipal · EIA 14534
Reported counties (1)
Los Angeles
- City of Santa Clara - (CA)Municipal · EIA 16655
Reported counties (1)
Santa Clara
- City of Burbank Water and Power - (CA)Municipal · EIA 2507
Reported counties (1)
Los Angeles
- Liberty UtilitiesInvestor Owned · EIA 57483
Reported counties (7)
Alpine, El Dorado, Mono, Nevada, Placer, Plumas, Sierra
- City of Redding - (CA)Municipal · EIA 15783
Reported counties (1)
Shasta
- PacifiCorpInvestor Owned · EIA 14354
Reported counties (4)
Del Norte, Modoc, Shasta, Siskiyou
- Alameda Municipal PowerMunicipal · EIA 207
Reported counties (1)
Alameda
- City of Palo Alto - (CA)Municipal · EIA 14401
Reported counties (1)
Santa Clara
- City of Lodi - (CA)Municipal · EIA 11124
Reported counties (1)
San Joaquin
- Bear Valley Electric ServiceInvestor Owned · EIA 17612
Reported counties (1)
San Bernardino
- City of Colton - (CA)Municipal · EIA 4003
Reported counties (1)
San Bernardino
- City of AzusaMunicipal · EIA 1050
Reported counties (1)
Los Angeles
- City of Lompoc - (CA)Municipal · EIA 11148Residential service not separately reported
Reported counties (1)
Santa Barbara
- Truckee Donner P U DPolitical Subdivision · EIA 19229Residential service not separately reported
Reported counties (2)
Nevada, Placer
- City of Banning - (CA)Municipal · EIA 1192Residential service not separately reported
Reported counties (1)
Riverside
- Merced Irrigation DistrictPolitical Subdivision · EIA 12312
Reported counties (1)
Merced
- Lassen Municipal Utility DistrictMunicipal · EIA 10724Residential service not separately reported
Reported counties (1)
Lassen
- City of Moreno Valley - (CA)Municipal · EIA 55787
Reported counties (1)
Riverside
- City of Ukiah - (CA)Municipal · EIA 19397Residential service not separately reported
Reported counties (1)
Mendocino
- Plumas-Sierra Rural Elec CoopCooperative · EIA 15308Residential service not separately reported
Reported counties (3)
Lassen, Plumas, Sierra
- Trinity Public Utilities DistPolitical Subdivision · EIA 19131Residential service not separately reported
Reported counties (1)
Trinity
- City of Healdsburg - (CA)Municipal · EIA 8348Residential service not separately reported
Reported counties (1)
Sonoma
- Anza Electric Coop IncCooperative · EIA 694Residential service not separately reported
Reported counties (1)
Riverside
- City of Shasta Lake - (CA)Municipal · EIA 17896
Reported counties (1)
Shasta
- Lathrop Irrigation DistrictPolitical Subdivision · EIA 62779Residential service not separately reported
Reported counties (1)
San Joaquin
- Rancho Cucamonga Municipal UtilityMunicipal · EIA 56224Residential service not separately reported
Reported counties (1)
San Bernardino
- City & County of San Francisco - (CA)Municipal · EIA 16612
Reported counties (2)
San Francisco, San Mateo
- City of Gridley - (CA)Municipal · EIA 7677Residential service not separately reported
Reported counties (1)
Butte
- City of Needles - (CA)Municipal · EIA 13149Residential service not separately reported
Reported counties (1)
San Bernardino
- Surprise Valley ElectrificationCooperative · EIA 18260
Reported counties (2)
Lassen, Modoc
- Colorado River Indian Irr ProjFederal · EIA 3990Residential service not separately reported
Reported counties (1)
San Bernardino
- DOD USMC Marine Air Ground CombatFederal · EIA 58789Residential service not separately reported
Reported counties (1)
San Bernardino
- City of Corona - (CA)Municipal · EIA 4390
Reported counties (1)
Riverside
- Kirkwood Meadows PUDPolitical Subdivision · EIA 66052Residential service not separately reported
Reported counties (2)
Alpine, Amador
- City of Biggs - (CA)Municipal · EIA 1702Residential service not separately reported
Reported counties (1)
Butte
- Shelter Cove Resort Improvement Dist No. 1Political Subdivision · EIA 66062Residential service not separately reported
Reported counties (1)
Humboldt
- Pittsburg Power CompanyMunicipal · EIA 58126Residential service not separately reported
Reported counties (1)
Solano
- City of Industry - (CA)Municipal · EIA 57194Residential service not separately reported
Reported counties (0)
County coverage not reported in this source
- Port of OaklandMunicipal · EIA 60715Residential service not separately reported
Reported counties (1)
Alameda
- Aha Macav Power ServicePolitical Subdivision · EIA 58123Residential service not separately reported
Reported counties (1)
San Bernardino
- City of Victorville - (CA)Municipal · EIA 55962Residential service not separately reported
Reported counties (1)
San Bernardino
- City of Vernon - (CA)Municipal · EIA 19798
Reported counties (1)
Los Angeles
- Port of Stockton - (CA)Municipal · EIA 60502Residential service not separately reported
Reported counties (1)
San Joaquin
- Tuolumne County Pub Power AgnyPolitical Subdivision · EIA 19174Residential service not separately reported
Reported counties (1)
Tuolumne
- Valley Electric Assn, IncCooperative · EIA 19840
Reported counties (2)
Inyo, Mono
- Bonneville Power AdministrationFederal · EIA 1738Residential service not separately reported
Reported counties (1)
Siskiyou
- City of Escondido - (CA)Municipal · EIA 5969Residential service not separately reported
Reported counties (1)
San Diego
- Kings River Conservation DistPolitical Subdivision · EIA 10325Residential service not separately reported
Reported counties (1)
Fresno
- WAPA-- Western Area Power AdministrationFederal · EIA 27000Residential service not separately reported
Reported counties (31)
Alameda, Butte, Calaveras, Colusa, Contra Costa, Fresno, Glenn, Imperial, Lassen, Madera, Merced, Modoc, Nevada, Placer, Riverside, Sacramento, San Bernardino, San Joaquin, San Mateo, Santa Clara, Shasta, Siskiyou, Solano, Sonoma, Stanislaus, Sutter, Tehama, Trinity, Tuolumne, Yolo, Yuba
Electricity suppliers / retail marketers 27
- San Diego Community PowerCommunity Choice Aggregator · EIA 64289
Reported counties (0)
County coverage not reported in this source
- Clean Power Alliance of Southern CaliforCommunity Choice Aggregator · EIA 61526
Reported counties (0)
County coverage not reported in this source
- Ava Community EnergyCommunity Choice Aggregator · EIA 61475
Reported counties (0)
County coverage not reported in this source
- Marin Clean EnergyCommunity Choice Aggregator · EIA 56692
Reported counties (0)
County coverage not reported in this source
- Central Coast Community EnergyCommunity Choice Aggregator · EIA 61432
Reported counties (5)
Monterey, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz
- CleanPowerSFCommunity Choice Aggregator · EIA 60181
Reported counties (0)
County coverage not reported in this source
- San Jose Clean EnergyCommunity Choice Aggregator · EIA 61858
Reported counties (0)
County coverage not reported in this source
- WestLight EnergyCommunity Choice Aggregator · EIA 60402
Reported counties (0)
County coverage not reported in this source
- Silicon Valley Clean Energy AuthorityCommunity Choice Aggregator · EIA 60759
Reported counties (0)
County coverage not reported in this source
- Clean Energy AllianceCommunity Choice Aggregator · EIA 64425
Reported counties (0)
County coverage not reported in this source
- Sonoma Clean Power AuthorityCommunity Choice Aggregator · EIA 59126
Reported counties (0)
County coverage not reported in this source
- Orange County Power AuthorityCommunity Choice Aggregator · EIA 64928
Reported counties (0)
County coverage not reported in this source
- Pioneer Community EnergyCommunity Choice Aggregator · EIA 61431
Reported counties (0)
County coverage not reported in this source
- Valley Clean Energy AllianceCommunity Choice Aggregator · EIA 61462
Reported counties (0)
County coverage not reported in this source
- Redwood Coast Energy AuthorityCommunity Choice Aggregator · EIA 60868
Reported counties (0)
County coverage not reported in this source
- Lancaster Choice EnergyCommunity Choice Aggregator · EIA 59625
Reported counties (0)
County coverage not reported in this source
- Energy for Palmdale's Independent ChoiceCommunity Choice Aggregator · EIA 65259
Reported counties (0)
County coverage not reported in this source
- Pomona Choice Energy (PCE)Community Choice Aggregator · EIA 63725
Reported counties (0)
County coverage not reported in this source
- Santa Barbara Clean EnergyCommunity Choice Aggregator · EIA 64555
Reported counties (0)
County coverage not reported in this source
- Desert Community EnergyCommunity Choice Aggregator · EIA 64195
Reported counties (0)
County coverage not reported in this source
- Apple Valley Choice EnergyCommunity Choice Aggregator · EIA 60758
Reported counties (0)
County coverage not reported in this source
- Pico Rivera Innovative Municipal EnergyCommunity Choice Aggregator · EIA 61083
Reported counties (0)
County coverage not reported in this source
- San Jacinto PowerCommunity Choice Aggregator · EIA 61433
Reported counties (0)
County coverage not reported in this source
- Rancho Mirage Energy AuthorityCommunity Choice Aggregator · EIA 61471
Reported counties (0)
County coverage not reported in this source
- Pilot Power Group, LLCRetail Power Marketer · EIA 14999
Reported counties (0)
County coverage not reported in this source
- King City Community PowerCommunity Choice Aggregator · EIA 61570
Reported counties (0)
County coverage not reported in this source
- 3 Phases Renewables IncRetail Power Marketer · EIA 21093
Reported counties (0)
County coverage not reported in this source
On-site energy sellers 6
- Sunrun Inc.Behind the Meter · EIA 59647
Reported counties (0)
County coverage not reported in this source
- Tesla Inc.Behind the Meter · EIA 57313
Reported counties (0)
County coverage not reported in this source
- SunPower Capital, LLCBehind the Meter · EIA 59580
Reported counties (0)
County coverage not reported in this source
- EverBright, LLCBehind the Meter · EIA 66036
Reported counties (0)
County coverage not reported in this source
- Spruce FinanceBehind the Meter · EIA 59943
Reported counties (0)
County coverage not reported in this source
- Palmetto Solar, LLCBehind the Meter · EIA 66026
Reported counties (0)
County coverage not reported in this source
No matching providers in this reporting snapshot. Check the official directory above.
Official logo sources · Initials indicate a logo not yet verified. Municipal-owner emblems identify the owning city or village.
Source: EIA-861 final 2025 detailed data · Reporting year 2025. Names and reported counties are historical survey data, not a live address lookup. A county can have several providers, and a listing does not mean every resident can choose it. Small/territory-only reports may not identify residential service separately.
Credits, rebates, and other opportunities.
Check the program’s scope before comparing savings: a tax exemption, equipment rebate, loan and electricity-export payment provide different benefits. Funding, utility territory, income, equipment and installation dates can limit eligibility. Amounts below are not added together or deducted from product prices.
Build a project incentive checklist for California
1 state & utility record
Self-Generation Incentive Program (SGIP)
CPUC and SGIP program administrators · Storage
Incentives support eligible customer-side storage and combined solar/storage; Residential Solar and Storage Equity targets qualifying low-income homes.
- Benefit
- Budget-specific incentives. CPUC directs applicants to the live SGIP budget page for open, closed and waitlist status.
- Who may qualify
- Technology, customer, budget and administrator requirements apply; equity and resiliency pathways have additional criteria.
- Before applying or buying
- Work with the applicable program administrator/developer to confirm budget availability and reservation requirements before committing to equipment.
No matching records in this reviewed selection. Check the official program sources for more options.
SGIP eligibility and funding depend on the program budget and administrator; this is not a universal solar rebate. This is a curated starting list, not every local incentive or a guarantee of available funding.
Federal programs in every state
The federal rules below apply nationally. State-administered federal rebates still require the local program to be operating and your project to meet its conditions.
Residential Clean Energy Credit (25D)
Closed / endedNot available for new property placed in service after December 31, 2025. Do not assume a federal 30% credit for a new 2026 solar, wind, geothermal or battery installation.
IRS: Residential Clean Energy CreditEnergy Efficient Home Improvement Credit (25C)
Closed / endedThe federal home-efficiency credit, including qualifying heat-pump improvements, ended for property placed in service after December 31, 2025.
IRS: Energy Efficient Home Improvement CreditHOMES / High-Efficiency Electric Home Rebates
Eligibility / funding conditionsFederally funded home-energy rebates operate through participating local administrators. Check the state program’s launch, current funding, eligible measures and application requirements. This is not a blanket rooftop-solar rebate.
DOE: Home Energy Rebates ProgramWeatherization Assistance Program
Eligibility / funding conditionsIncome-eligible households may receive approved home-weatherization services through local agencies. This is assistance delivered through a program, rather than an automatic reimbursement for equipment you buy.
DOE: How to Apply for Weatherization Assistance
Permits and electrical codes.
California’s official code portal links Title 24’s electrical, building and fire parts. Confirm the edition governing the permit application and local amendments with the reviewing authority.
Use the adoption authority linked below to check the effective date and amendments. The newest published NEC edition is not automatically the edition adopted for your project.
Before ordering equipment.
Two conversations. Keep their answers separate.
Track permits and interconnection in a project
- Confirm the permit authority
Ask the city, county, or state electrical office which building, electrical and fire-code editions and amendments apply to this address. Request the solar/ESS permit checklist and inspection sequence.
- Confirm the utility process
Give the serving utility your proposed capacity, inverter model and operating mode. Ask which interconnection application, tariff, export limits, meter changes and written operating authorization apply.
- Document the exact equipment
Collect model-specific certificates, installation manuals, a one-line diagram, site/roof plans, and the battery/inverter pairing if storage is proposed. Check them with the permit authority and utility before ordering.
For the general permitting and inspection process: DOE: Permitting and Inspection for Rooftop Solar .
UL, NEMA, and system acceptance.
Different evidence, different scope.
Check the exact model and approved system configuration. A UL 1973 battery listing or UL 9540A fire-test report does not, by itself, establish UL 9540 certification of a complete storage system.
Open the UL & NEMA referenceScope and system-level certification: UL Solutions: Energy Storage System Testing and Certification .
Official sources.
Open the source for current forms, eligibility, tariffs, and adopted rules. Utility-specific examples apply to that provider.
