5.3 Four design rules under NEM 3.0

Size the array to 1.5×–2× annual usage (not 1:1). Winter has short days and frequent overcast — your nameplate needs headroom.
Battery needs to be large enough: size at 1.0× to 1.3× of one day's peak usage. A typical home wants at least 2 × 13.5 kWh (~27 kWh); a household with an EV usually starts at 30–40 kWh.
Push load to daytime: dishwasher, dryer, EV charging, water heater, pool pump — all between 10am and 3pm.
Treat "Non-export" (no grid export at all) as a legitimate option — see section 5.7 below.

5.4 What "saving money" actually looks like under NEM 3.0

Next Step

Questions after reading this section? Send us your utility bill — we will come back within one business day with a recommendation specific to your situation.