What Are the ADU Electrical Requirements in California in 2026?

California ADUs must comply with strict electrical and energy regulations under the California Electrical Code (CEC) and Title 24 energy standards. Most ADUs require detailed planning for electrical panels, load calculations, dedicated circuits, solar readiness, and utility coordination to meet modern safety and efficiency requirements. Homeowners in San Diego and across California often underestimate the need for panel upgrades, EV-ready infrastructure, and Title 24 compliance during the permitting process. Proper electrical planning helps prevent failed inspections, project delays, costly retrofits, and long-term electrical safety hazards.