
Adding solar panels and battery storage to a home or building requires dedicated electrical work — a panel evaluation, often a service upgrade, dedicated circuits for the inverter and battery, and wiring ready for your utility's interconnection process. Flow MEP handles this electrical scope for residential and commercial solar and battery storage projects across the Bay Area, working alongside your solar installer or as a standalone battery backup project.
Solar panels generate DC power that an inverter converts to usable AC power for a building, and that inverter has to tie into the electrical panel through a dedicated circuit sized to the system's output. Battery storage adds another circuit and, in many cases, requires a panel upgrade or a dedicated subpanel to handle backed-up circuits during an outage.
We evaluate existing panel capacity early, since an undersized panel is one of the most common reasons a solar or battery project stalls partway through.
For battery-only projects — adding storage to an existing solar system, or installing a battery without solar for backup power — the process is similar: a dedicated circuit, correctly rated disconnects, and a transfer setup so backed-up circuits switch over automatically when utility power drops.
Many Bay Area homes with older 100-amp panels need a panel upgrade before a solar and battery system can be installed, since the combined load of the main service, the inverter, and the battery has to fit within code limits. We run the load calculation up front so there are no surprises mid-project.
Connecting a solar or battery system to the grid requires an interconnection agreement with your utility in addition to the standard electrical permit. We handle the electrical permit and inspection on our scope of work; interconnection paperwork is typically coordinated with your solar installer, and we support that process from the electrical side.
Not always — it depends on your existing panel capacity and the size of the system being added. We run a load calculation before recommending an upgrade.
Call us or book online. Our technicians typically respond within 24 hours.