Solar hookup, battery backup & energy storage in El Cajon, San Diego County. Local electricians, upfront pricing and fast scheduling.
(833) 652-8933 Request a quoteSolar and battery storage are common on El Cajon rooftops, but the electrical side is where projects stall. Phasethree Electric handles the electrical hookup for solar systems, main panel upgrades and derates, backup gateways, critical-load sub panels and battery backup installation for homeowners and solar companies in El Cajon and San Diego County.
AC and DC disconnects, inverter wiring, rapid shutdown, line-side taps or breaker interconnection, panel derates and labeling that passes El Cajon inspection and utility interconnection the first time.
Tesla Powerwall, Enphase IQ Battery, Franklin and Generac PWRcell systems wired for whole-home or essential-load backup so lights, refrigerators, internet and medical equipment stay on through PSPS events and storms.
Many homes need a 200 amp panel, a bus bar upgrade or a main breaker derate before solar can be connected. We complete that work and coordinate with your installer. Also serving nearby Spring Valley, Lakeside, La Mesa, Santee. Call (833) 652-8933.
We provide solar & battery backup electrical throughout El Cajon and the surrounding communities of San Diego County.
Usually yes. AC-coupled batteries work with most existing solar systems; we evaluate your inverter and panel first.
One battery typically covers essential loads. Two or more can run most of a El Cajon home including some HVAC.
Yes. We subcontract main panel upgrades and electrical prep for solar companies across San Diego County.
“Had them do a full electrical inspection before we bought our house. The photo report saved us thousands in negotiations.”
Robert K.“They rewired our 1948 house room by room and we never lost power overnight. Walls were patched cleaner than we expected.”
Tom & Linda R.“Hot tub circuit and disconnect installed and inspected in a week. Everything was labeled and explained.”
Carlos D.Upfront pricing · Same-day service · 24/7 emergency response