A real cost breakdown for a typical 6kW system in Worcester, using local rate and sun-hour data rather than a state-wide average.
Worcester has one of the higher electricity rates in the country at approximately $0.28/kWh, and a solid, average solar resource at 4.1 peak sun hours a day — notably different from a simple Massachusetts state-wide average in some cases, since metro-level microclimates and local utility rates can diverge from state figures. Combined with a metro-level installed-cost estimate of $3.20/watt, a standard 6kW residential system runs approximately $16,720 before any incentives.
| Line item | Estimated cost | Share of total |
|---|---|---|
| Equipment (panels, inverter, racking) | $10,560 | 63% |
| Labor / installation | $5,760 | 34% |
| Permitting & inspection | $400 | 2% |
| Total (before incentives) | $16,720 | 100% |
A 6kW system in Worcester costs 4% less than the 50-state average of $17,372, and the electricity rate it offsets is 73% higher than the $0.16/kWh average across those states. At $2,011 in estimated annual value from 7,183 kWh of yearly production, this system pays back in roughly 8 years — a payback period in line with the national average.
A typical 6kW residential solar system in Worcester costs approximately $16,720 installed in 2026, based on a metro-level estimate of $2.79/watt.
At Worcester's average rate of $0.28/kWh, a 6kW system pays back in roughly 8 years — a payback period in line with the national average.