MySolarModel · Solar ROI summary
Unsaved scenario
| System | 64.4 kW DC · 69,869 kWh in year 1 · 0.60% degradation/yr · 25 years from 2024 |
|---|---|
| Electricity | $0.140/kWh · 1.00% price inflation · 6.75% discount rate · SREC $34/MWh · utility incentive $0.10/kWh |
| Cash purchase | $160,974 installed · federal tax credit 0% |
| Lease / finance | $48,292 down · $112,681 financed at 7.25% for 25 years ($814.47/mo) · federal tax credit 0% |
Cash purchase comes out ahead by $11,157 in present value.
Model name: Unsaved scenario · 64.4 kW · 69,869 kWh in year 1 · $0.140/kWh
Key results
| Metric | Cash purchase | Lease / finance |
|---|---|---|
| Net present value | $3,241 | ($7,916) |
| ROI | 2.0% | -5.1% |
| ROI (annualized) | 0.08% | -0.21% |
| Cumulative net savings | $156,642 | $24,984 |
| Year-1 out of pocket | $160,974 | $58,066 |
| Payback year | 13 | 17 |
| Monthly payment | — | $814.47 |
Cumulative net savings
Nominal dollars — where each line crosses zero is payback.
Annual net savings
Year 1 includes cost, tax credit and incentive.
Present value of savings (cumulative)
The line's end point is the NPV.
Lifetime value breakdown
Electricity value, SREC income and credits vs. costs.
Projections are estimates for planning only and are not financial, tax or legal advice. Energy estimates use the PVWatts V8 model (National Laboratory of the Rockies). Federal tax credit eligibility depends on ownership and timing; confirm with a tax professional. Prepared with MySolarModel, a SoftLOGiX application.