San Diego is California's most solar-motivated market — SDG&E has the highest residential electricity rates of any investor-owned utility in the US ($0.30–$0.55/kWh). Even under NEM 3.0, solar + battery economics in San Diego are exceptionally strong because self-consumption of high-rate electricity delivers far more value than exporting at low rates. SGIP battery incentives are available through SDG&E. The 30% federal ITC applies; CA property tax exclusion protects against assessed value increases.