Commercial solar installation on California warehouse facility reducing PG&E electricity costs
Commercial solar installations across California continue to deliver strong ROI as PG&E, SCE, and SDG&E commercial rates remain among the highest in the US.

California Commercial Solar in 2026

California remains the most mature commercial solar market in the US, driven by PG&E, SCE, and SDG&E commercial rates that consistently exceed $0.18-0.26/kWh blended — among the highest in the country. For manufacturing, distribution, agricultural, and commercial operations across the state, solar is not a sustainability decision but a straightforward financial one. Every kWh of solar self-consumption offsets electricity at your full retail rate, making California one of the highest-ROI commercial solar markets even without factoring in state incentives.

Our California EPC partners are active in the PG&E service territory across the Bay Area and Central Valley, SCE territory in Los Angeles and Orange counties, SDG&E territory in San Diego, and SMUD territory in Sacramento. We've completed projects for manufacturers near Fresno, distribution centers in the Inland Empire, and commercial properties across Los Angeles County. Each utility has different interconnection timelines, net metering structures, and SGIP battery incentive allocations that our team models accurately in every proposal.

California Commercial Solar Incentives 2026

  • Federal ITC (30-50%, Section 48E): Base 30% ITC with energy community and FEOC-compliant domestic content adders available through December 31, 2027
  • SGIP Battery Storage Rebate: California's Self-Generation Incentive Program pays cash rebates for commercial battery storage systems — up to $0.25/Wh for qualifying projects
  • NEM 3.0 Export Credits: Commercial accounts on NEM 3.0 receive time-of-use based export compensation; systems with high self-consumption ratios (typical for daytime-heavy businesses) are minimally affected
  • Property Tax Exclusion (AB 946): California excludes active solar energy systems from property tax reassessment — no property tax increase from your solar installation
  • MACRS 5-Year Depreciation: Federal accelerated depreciation on the ITC-adjusted basis reduces taxable income significantly in years one and two
California NEM 3.0 net metering structure for commercial solar showing time-of-use export compensation rates
California's NEM 3.0 net metering framework replaced NEM 2.0 in 2023. Commercial facilities with high daytime self-consumption ratios are minimally affected and continue to see strong solar ROI. See the CPUC NEM 3.0 decision for full rate details.

California Solar Market by Region

PG&E commercial rates in the Bay Area and Central Valley regularly exceed $0.22/kWh blended for medium-sized commercial accounts, making solar payback timelines among the fastest in the country. The Central Valley agricultural market — from Fresno through Bakersfield — has seen significant commercial and agricultural solar adoption given the combination of exceptional irradiance (5.5-6.0 peak sun hours), high PG&E rates, and large facility footprints. Our ESP model works particularly well for California C-corps and LLCs with federal tax liability, delivering day-one positive cash flow without touching the capital budget.

Southern California SCE and SDG&E accounts have faced rate pressures from wildfire-related infrastructure costs, making solar even more compelling in markets like the Inland Empire, Orange County industrial corridor, and San Diego commercial market. The SGIP battery rebate is particularly valuable in SoCal given the TOU rate structures that reward evening battery discharge.

For more on California's solar policy environment, the California Energy Commission maintains current commercial solar program guidance. The DSIRE database tracks all active California state and utility incentives by zip code.

California Case Study

Inland Empire Logistics Facility Saves $140k Per Year

The Situation

A 120,000 sq ft distribution center in Riverside County was paying PG&E over $200,000 annually. South-facing flat roof with no shading — an ideal solar candidate. Significant federal tax liability through the parent company LLC.

Our Approach

Our California EPC partner designed a 780 kW rooftop system optimized for the facility's load profile. Structured under the ESP model using federal ITC proceeds. SGIP battery storage enrollment added a 15-year incentive contract on the paired battery system.

The Outcome

System commissioned Q1 2025, generating $140,000 in annual electricity savings plus $18,000 in SGIP payments. 25-year projected savings exceed $3.9 million. Appraised facility value increased by an estimated $1.1 million.

Client name changed. Results vary. Prior results do not guarantee similar outcomes.

Frequently Asked Questions: California Commercial Solar

How does California NEM 3.0 affect commercial solar ROI?
NEM 3.0 reduced export compensation for solar-only systems compared to NEM 2.0, using time-varying avoided cost rates rather than full retail credit for exports. However, most commercial facilities consume 70-90% of their solar production on-site during business hours, making NEM 3.0 export rates largely irrelevant to project economics. Pairing solar with SGIP battery storage further reduces grid export by storing excess midday production for evening use. Our proposals model your specific load profile and NEM 3.0 export impact accurately.
What California utility territories do you serve?
Our California EPC partners have completed commercial solar projects in PG&E, SCE, SDG&E, and SMUD territories. We are also active in several municipal utility districts across the Central Valley. Each utility has different interconnection processes, timelines, and incentive programs — particularly for SGIP battery storage, where allocation varies by utility. We model all of these accurately in every proposal.

Related Resources for California Businesses

Neighboring States We Serve

We connect businesses across the region. Learn about commercial solar programs and incentives in Texas, Arizona, Nevada, Oregon, and Nevada. View our full US service area.