Calculation Methodology
Year-by-year breakdown of projected savings, rebates, and cumulative benefit over the 25-year project lifetime.
Key Assumptions
Energy Production
- kWh annual production
- 0.5% annual degradation in solar panel efficiency
- Based on system capacity and historical performance
Financial Projections
- 2.99% annual electricity rate increase
- ZREC rebates for first 15 years only
- Initial rate: $0.31/kWh (based on 2-year Eversource average)
Note: Rows with gray backgrounds reflect actual data from billing records. Future years are projections based on the assumptions above.
25-Year Projection Table
| Year | Annual Savings | Rebates | Net Benefit |
|---|
Total Power Savings
Total Rebates (15 yr)
Net Benefit (25 yr)
Break-Even Analysis
The break-even point is reached when cumulative savings and rebates equal the initial project cost of .
Based on projections, break-even occurs approximately days after the operational launch, which corresponds to .
After break-even, the system generates pure profit for the remaining years, resulting in a projected total net benefit of .