How to size solar for a home that is becoming all-electric
An all-electric home is not just a bigger solar system — it is a different load profile. EV charging, heat pump hot water and induction cooking push demand into the evening and overnight, when solar alone will not cover it. Sizing has to anticipate that shift rather than mirror today's bills.
A practical approach is to size the array for expected daytime consumption plus enough surplus to charge a battery that carries the evening peak. For most households that lands between 8 and 13kW of panels paired with 10 to 15kWh of storage, but the right number depends on your tariff, EV habits and roof orientation.
The key is to model the future state, not the current one. We size against the household you are becoming, then design the system to be battery-ready so adding storage later is a straightforward upgrade rather than a reinstall.
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