Updated May 16, 2026. For San Diego homeowners, the biggest solar story is no longer just panel installation - it is how solar panels, battery storage, time-of-use rates, and export credits work together. The CPUC confirms that new interconnection applications in SDG&E territory are generally served under California's Net Billing Tariff, which utilities call the Solar Billing Plan. Under this structure, home solar first offsets electricity used onsite, while exported energy earns bill credits based on grid value rather than the full retail rate. The CPUC notes that export credits can be lower than retail rates but may be higher during late-summer evening hours, which makes battery storage especially important for homeowners who want to store daytime solar and use or export it when energy is more valuable.
The federal Residential Clean Energy Credit remains important for 2025 tax filings. IRS guidance reviewed in January 2026 says qualifying residential clean energy expenses paid or incurred in tax year 2025 may be claimed on the taxpayer's 2025 return, assuming the other requirements are met. Homeowners should confirm eligibility with a qualified tax professional before relying on any incentive. California's SGIP program also continues to matter for battery storage. The CPUC lists SDG&E customers as eligible through the Center for Sustainable Energy program administrator and highlights Residential Solar and Storage Equity incentives designed to expand battery storage and solar access for qualifying households.
Under the Solar Billing Plan, batteries can help homeowners use more of their own daytime solar power and shift stored energy into evening hours, when electricity demand and export values can be higher.
Federal tax credits and California storage incentives can change by tax year, income qualification, utility territory, and program funding. San Diego homeowners should verify current rules before signing a contract.
Solar savings now depend heavily on when energy is produced, consumed, stored, and exported. A system design should match the household's usage pattern, roof production, battery needs, and time-of-use rate.
Solar panels paired with battery storage can support backup power planning, reduce peak grid demand, and help San Diego households prepare for outages while lowering long-term reliance on utility energy.
The best 2026 solar strategy in San Diego is usually a right-sized solar panel system paired with smart battery planning. New solar customers should understand the Solar Billing Plan, estimate household daytime and evening usage, review SGIP battery eligibility, and confirm tax-credit timing before choosing equipment or financing.
Sources for this update include the California Public Utilities Commission Net Energy Metering and Net Billing page, the CPUC Self-Generation Incentive Program page, the CPUC Residential Storage and Solar Equity announcement, and the IRS Residential Clean Energy Credit timing FAQ.