NEM 3.0 reduces the export rate for residential solar electricity by around 75%, from an average of 30 cents per kWh to 8 cents per kWh. Lower export prices will increase the payback period for solar owners under NEM 3.0 and decrease the overall savings.
This effectively increases the value of pairing battery storage with solar. Under the new rate structure, the return on investment for solar and battery is similar to that of solar only, but with the added benefits and independence of having a backup power source.