Solar + EV Charging in 2026: Sizing Your System for an Electric Car

If you have an EV — or you're about to get one — solar changes the math completely. Charging a car at home roughly doubles a typical household's electricity use, which is exactly the kind of big, predictable load solar pays off against. Here's how to think about pairing them in 2026.

Why solar + EV is such a good fit

An electric car adds roughly 3,000–4,000 kWh of demand per year depending on how much you drive — a large, steady load. Charging on your own solar power is far cheaper per mile than gas, and cheaper than charging on grid electricity at rising utility rates.

Size the system for the car, not just the house

The #1 mistake: sizing solar for your current bill, then buying an EV six months later and being under-built. If an EV is anywhere on your horizon, tell your installer — they should add roughly 2–3 kW of panels to cover it. (More on sizing: what size system do I need?)

Charge when the sun is up — or add a battery

The cleanest savings come from charging midday while your panels are producing. If you charge at night, your savings depend on your net-metering deal (how net metering works) — and in low-buyback states like California, a battery that stores daytime solar for evening charging makes more sense (do you need a battery?).

The 2026 bottom line

Solar + EV is one of the strongest combinations in home energy right now — you're replacing both a rising electric bill and gasoline with power from your roof. Just make sure the system is sized for the car. Get a free quote and we'll size it for your driving, not just your current bill.