How Much Can Solar Save in Northbrook?
Real numbers based on current ComEd rates and Illinois incentives.
$259
Current Bill/mo
$201
Est. Lease + Battery
6.2 yrs
Payback Period
$84,034
25-Year Savings
What You're Paying Now
Without solar, here's what ComEd electricity will cost you over time at 6% annual rate increases.
Monthly Bill
$259
Annual Cost
$3,108
25-Year Cost (No Solar)
$170,519
Your Solar Investment
12.5 kW System
$36,250
$19,340
After All IL Incentives
DG Rebate ($300/kW)-$3,750
Illinois Shines RECs (lump sum, ~18 mo)-$13,160
With vs Without Solar in Northbrook
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $259/mo | $219/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$4/mo |
| 5-Year Cost | $16,783 | $13,140 |
| 25-Year Cost | $170,519 | $86,485 |
| Rate Control | None — utility sets rates | Fixed at $0.10/kWh (avg.) for 15 years |
| Home Value Impact | None | +$15,000–$25,000 (tax-exempt) |
Your Solar Savings Over Time
Estimated 25-Year Total Savings
$84,034
Without Solar
With Solar
Year 1Payback Year
$3,108
$3,058
Year 5
$17,520
$2,558
Year 10
$40,966
$19,634
Year 15
$72,342
$38,679
Year 20
$114,330
$60,558
Year 25
$170,519
$86,485
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $3,108 | $3,058 | $50 |
| Year 2 | $6,402 | -$7,005 | $13,408 |
| Year 3 | $9,895 | -$3,865 | $13,760 |
| Year 4 | $13,596 | -$679 | $14,275 |
| Year 5 | $17,520 | $2,558 | $14,963 |
| Year 6 | $21,679 | $5,848 | $15,832 |
| Year 7 | $26,088 | $9,195 | $16,893 |
| Year 8 | $30,761 | $12,606 | $18,155 |
| Year 9 | $35,715 | $16,084 | $19,631 |
| Year 10 | $40,966 | $19,634 | $21,332 |
| Year 11 | $46,532 | $23,262 | $23,270 |
| Year 12 | $52,432 | $26,974 | $25,458 |
| Year 13 | $58,686 | $30,776 | $27,910 |
| Year 14 | $65,315 | $34,675 | $30,639 |
| Year 15 | $72,342 | $38,679 | $33,662 |
| Year 16 | $79,790 | $42,795 | $36,995 |
| Year 17 | $87,686 | $47,032 | $40,654 |
| Year 18 | $96,055 | $51,398 | $44,657 |
| Year 19 | $104,926 | $55,903 | $49,023 |
| Year 20 | $114,330 | $60,558 | $53,772 |
| Year 21 | $124,297 | $65,373 | $58,925 |
| Year 22 | $134,863 | $70,360 | $64,503 |
| Year 23 | $146,063 | $75,532 | $70,531 |
| Year 24 | $157,935 | $80,902 | $77,033 |
| Year 25 | $170,519 | $86,485 | $84,034 |
Start Saving in Northbrook
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