How Much Can Solar Save in Princeton?
Real numbers based on current ComEd rates and Illinois incentives.
$138
Current Bill/mo
$139
Est. Lease + Battery
5.5 yrs
Payback Period
$47,187
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
$138
Annual Cost
$1,656
25-Year Cost (No Solar)
$90,856
Your Solar Investment
6 kW System
$17,400
$8,767
After All IL Incentives
DG Rebate ($300/kW)-$1,800
Illinois Shines RECs (lump sum, ~18 mo)-$6,833
With vs Without Solar in Princeton
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $138/mo | $105/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$12/mo |
| 5-Year Cost | $8,942 | $6,300 |
| 25-Year Cost | $90,856 | $43,669 |
| 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
$47,187
Without Solar
With Solar
Year 1Payback Year
$1,656
$1,507
Year 5
$9,335
$943
Year 10
$21,827
$9,473
Year 15
$38,545
$19,091
Year 20
$60,917
$30,268
Year 25
$90,856
$43,669
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,656 | $1,507 | $149 |
| Year 2 | $3,411 | -$3,796 | $7,207 |
| Year 3 | $5,272 | -$2,243 | $7,515 |
| Year 4 | $7,244 | -$664 | $7,908 |
| Year 5 | $9,335 | $943 | $8,392 |
| Year 6 | $11,551 | $2,580 | $8,971 |
| Year 7 | $13,900 | $4,249 | $9,652 |
| Year 8 | $16,390 | $5,952 | $10,438 |
| Year 9 | $19,030 | $7,692 | $11,337 |
| Year 10 | $21,827 | $9,473 | $12,354 |
| Year 11 | $24,793 | $11,297 | $13,496 |
| Year 12 | $27,937 | $13,167 | $14,770 |
| Year 13 | $31,269 | $15,086 | $16,182 |
| Year 14 | $34,801 | $17,060 | $17,741 |
| Year 15 | $38,545 | $19,091 | $19,454 |
| Year 16 | $42,514 | $21,183 | $21,330 |
| Year 17 | $46,721 | $23,342 | $23,378 |
| Year 18 | $51,180 | $25,573 | $25,607 |
| Year 19 | $55,907 | $27,879 | $28,027 |
| Year 20 | $60,917 | $30,268 | $30,649 |
| Year 21 | $66,228 | $32,745 | $33,483 |
| Year 22 | $71,858 | $35,317 | $36,541 |
| Year 23 | $77,825 | $37,990 | $39,836 |
| Year 24 | $84,151 | $40,771 | $43,380 |
| Year 25 | $90,856 | $43,669 | $47,187 |
Start Saving in Princeton
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