Summer Savings Calculator

Target a $0 summer electric bill with solar + batteries.

Pick your utility, enter your current summer bill, and I'll show a preliminary cost and savings estimate using a 100% summer offset target.

Your inputs

Estimates are visible right below — no contact info required.

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Default example: $700/month for PG&E.

Solar + Batteries · PG&E

Targeted summer bill: $0/mo

100% summer offset target with solar + batteries.

Current summer electric bill
$700/mo
Targeted summer bill
$0/mo
Estimated system size
8.5 kW
Estimated system cost
$29,750

Incentives & net cost

Estimated gross system cost
$29,750
30% federal benefit applied upfront
− $8,925
Net effective cost
$20,825

Prepaid lease structure typically reflects the 30% federal tax benefit in upfront pricing.

Cash / Prepaid

Net effective cost
$20,825
Estimated summer monthly savings
$700/mo
Estimated simple payback
6.0 yrs

At a targeted $0 summer bill, your full prior summer payment becomes monthly savings. Payback assumes ~5 high-bill summer months per year; year-round savings will shorten it.

$0 Down Loan · 6.99% · 20-yr

Loan amount (net effective cost)
$20,825
Estimated monthly payment
$161/mo
Targeted summer utility bill
$0/mo
Estimated summer cash-flow improvement
$539/mo

Annualized summer-season savings note: estimates above reflect the summer months when bills are typically highest. Year-round savings depend on utility rate plan, usage patterns, and battery settings.

Estimated examples. Actual savings vary based on usage, roof space, sun exposure, weather, battery settings, utility rate plan, utility rules, and final system design.
Free energy analysis

Want real numbers for your home?

Send me your utility bill for a free energy analysis. I'll review your usage, rate plan, and roof and send back a personalized estimate.

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You can also share your bill through the secure contact form.