Massachusetts Solar Math (2026) Breakdown

Solar Math (2026) Table

| Metric | Value | Calculation/Notes |

|----------------------|---------------------------|-----------------------------------------------------------------------------------|

| Installed Cost | $13,000 | 5 kW × $2.60/watt |

| Federal ITC | $3,120 | 22% of $13,000 (ITC applies to installed cost) |

| Net Cost | $9,880 | $13,000 - $3,120 (installed cost minus ITC) |

| Annual Production| 7,500 kWh | 5 kW × 1,500 kWh/kW (based on 2026 irradiance and system efficiency) |

| Annual Savings | $1,500 | 7,500 kWh × $0.20/kWh (based on 2026 electricity rates) |

| Payback Period | ~6.76 years | $9,880 ÷ $1,500 (net cost divided by annual savings) |