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Klein Tools Voltage Tester Kit
★★★★★ 4.7 · 2,400+ reviews
A homeowner-friendly tester kit for safe basic electrical checks before and after upgrades.
~$35
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Solar Savings Calculator
See how much you can save with solar using local sun hours, tax credits, system size, and long-term utility inflation.
Blank = national average installed price of $2.80 per watt.
Federal tax credit: This calculator assumes the current 30% residential clean energy credit (ITC). State and utility rebates may improve the numbers further.
Projected 25-year total savings
$0
See your payback, monthly savings, and tax credit below.
System size needed
0 kW
Year 1 savings
$0
Federal tax credit
$0
Net system cost
$0
Simple payback
0 yrs
COâ‚‚ offset
0 lbs/yr
Monthly savings
$0
Sun hours / rate
0 / 0
10-year solar savings table
We assume 0.5% panel degradation per year and the utility rate increase you entered above.
| Year | Annual Bill Without Solar | Annual Bill With Solar | Annual Savings | Cumulative Savings |
|---|
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Frequently asked questions
How does the auto-calculate system size work?
We estimate your annual electricity use from your monthly bill and an average residential utility rate for your state, then size the system from local average sun hours and a 75% performance factor.
Does this include the 30% federal solar tax credit?
Yes. The calculator automatically subtracts a 30% federal clean energy credit from the installed system cost to show your net out-of-pocket price.
Why is my payback faster in sunnier states?
Higher daily sun hours mean each installed kilowatt produces more electricity every year, which increases annual savings and shortens the payback period.
What if my installer quote is already in hand?
Enter your quoted installation cost manually. If you leave it blank, we estimate cost using a national installed price per watt.
Is the 25-year savings number guaranteed?
No. It is an estimate. Actual savings depend on shade, roof orientation, utility net metering rules, maintenance, rate increases, and system performance over time.
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