Bills by billing period

Numbers by period, at the bottom of the result, lists every billing period of the first year with solar — its dates, usage, solar production, and the bill today and with solar. LADWP has 6 two-month periods, SCE 12 months.

Open Numbers by period under the charts. The Bills and Energy charts show the same numbers as bars.

Column	What it is
Period	The billing period as entered from the customer’s bills.
Forecast dates	The same period one year later — the first year with solar.
Usage, kWh	The home’s usage in the period — from the bills, or split from the yearly total.
Solar, kWh	What the panels make in the period.
Bill today	The bill on the current rate, without solar.
With solar	The bill with solar under the utility’s rules.
With battery	SCE homes with a battery: the bill with solar and the battery. LADWP gives the battery’s effect for the year only.

Why the sum can differ from the tiles

The yearly bills in the tiles above are the middle of many simulated hourly usage patterns that fit these bills; this table shows one typical pattern, so its sum can differ slightly. See Why the first-year forecast is a range.

SCE: the true-up

With SCE solar, part of the cost comes once a year at the true-up, not in the monthly bills. When the true-up comes to a dollar or more, the note under the table gives the amount — it’s included in the yearly bill above. See How the bill after solar is calculated: SCE NEM 3.0.

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Updated October 6, 2026