Solar Payback in Peterborough 2026
Peterborough solar systems typically pay for themselves in 10 years. See the math by system size, with Peterborough Utilities rates and available Ontario rebates.
Last verified:
Short answer
Solar in Peterborough typically pays back in 10 years for a right-sized 6 to 10 kW residential system. Payback varies with your Peterborough Utilities rate (average 14.0¢/kWh), 2,050 annual sun hours in Peterborough, net system cost after Ontario rebates, and how much production you self-consume. See system-by-system math below.
10 yrs
Typical Payback
14.0¢/kWh
Electricity Rate
2,050
Sun Hours/Year
$2.95/W
Installed Cost
How Peterborough Solar Payback Is Calculated
Payback (years) = Net System Cost / Annual Bill Savings
Net system cost is your installed cost minus available rebates. Annual bill savings equal annual production times your effective rate, adjusted for self-consumption. In Peterborough, we use 2,050 sun hours, 14% capacity factor, Peterborough Utilities rate 14.0¢/kWh, and 85% self-consumption.
Assumptions used on this page
- • Installed cost mid-range: $2.95 per watt
- • Annual production: 14% capacity factor times 8,760 hours per year
- • Electricity rate: 14.0¢/kWh flat (does not model TOU or ULO)
- • Rebate: Ontario HRSP at $1,000/kW up to $5,000, 50% cap
- • Self-consumption ratio: 85%
- • No rate escalation modelled (real payback is shorter with rate increases)
Peterborough Payback by System Size
| System | System cost | Rebate | Net cost | Annual savings | Payback |
|---|---|---|---|---|---|
| 4 kW | $11,800 | $4,000 | $7,800 | $584/yr | 13.4 yrs |
| 6 kW | $17,700 | $5,000 | $12,700 | $876/yr | 14.5 yrs |
| 8 kW | $23,600 | $5,000 | $18,600 | $1,168/yr | 15.9 yrs |
| 10 kW | $29,500 | $5,000 | $24,500 | $1,459/yr | 16.8 yrs |
| 12 kW | $35,400 | $5,000 | $30,400 | $1,751/yr | 17.4 yrs |
Estimates assume 14% capacity factor, 14.0¢/kWh, 85% self-consumption, no rate escalation. Actual payback varies with roof orientation, shading, usage pattern, and financing.
See Your Peterborough Solar Payback
Enter your address for a payback estimate that uses your actual roof, usage, and rate plan.
Get a free estimatePeterborough Solar Payback FAQs
Compare Solar Payback in Nearby Ontario Cities
See how Peterborough payback compares to other Ontario cities.
Related Resources
Solar Cost in Peterborough
See installed pricing for Peterborough.
Learn morePeterborough Solar Calculator
Get a personalised estimate.
Learn moreSolar Payback Period Canada
National overview.
Learn moreSolar in Ontario
Complete Ontario solar guide.
Learn moreSolar Rebates & Incentives
Find rebates in Ontario.
Learn moreSolar Payback Toronto
Compare payback in Toronto.
Learn moreSolar Payback Ottawa
Compare payback in Ottawa.
Learn moreSolar Payback Mississauga
Compare payback in Mississauga.
Learn moreFree Solar Estimator
Get a quote.
Learn more— Sources: NRCan, Peterborough Utilities published rates.