Scan a bill
Photo or PDF of the latest electric bill — the numbers fill in automatically, and you review them before anything is applied.
Utility
Rate notes
Export 3.9¢ and the $46/mo battery credit are from the call. Import rate is illustrative — confirm Duke SC retail tariff.
Daytime overproduction sent to the grid.
Duke SC 3.9¢ · SRP 2.8¢.
Evening + overnight grid usage.
Roughly 11¢–32¢ by utility.
Bounds how much energy can shift. Franklin aPower 2 ≈ 15 kWh usable, stackable.
One day at your house
Sold to the grid
$0.70/ day
Bought back at night
$3.08/ day
Your net cost
$2.38/ day
Your grid cost, even with solar
That’s $2.38 a day — about $852 a year. Around $45/mo of it is pure sell-at-3.9¢, buy-back-at-14¢ — the part a battery plugs.
These are planning estimates based on the rates entered above — we’ll confirm exact rates and credits from your utility bill.