Read the results

The result is the forecast for the first year with solar: your customer’s bills rolled forward one year, at today’s utility rates. Forecast dates in Numbers by period show which months it covers.

The top of the result

Estimated savings

How much less the customer pays the utility in a year, with the share of the bill and the monthly amount. With a battery it says Estimated savings with solar and battery.

Electric bill per year

Today, With solar and, with a battery, With battery — side by side.

Solar covers

The panels’ yearly production as a share of the home’s yearly usage, with both in kWh.

Price and payback

Next comes the money. For cash: System cost, Payback from bill savings, and 25-year savings after paying for the system. For a loan: Loan payment, Bill + payment against the bill without solar, and the 25-year savings after all loan payments. Change price jumps to the price.

Payback reads From year 1 when nothing is paid upfront and the customer saves from the start, and Not within 25 years when the savings don’t cover the price in that time.

Charts

Everything else

• All numbers — the bill (for SCE, with its likely range), savings, production against usage, shade loss and how the utility credits solar.
• Numbers by period — the table behind the charts: Bills by billing period.
• Details — roof faces, city tax and the engine’s notes: Result details: roof faces, taxes and engine notes.

Notes under the savings point out what deserves a second look — see Warnings on the results.