Solar Panel Savings in Washington
Washington gets 3.8 peak sun hours per day with electricity at 11¢/kWh. See how much you can save with solar panels.
Solar Panel Cost & Savings by System Size in Washington
| System Size | Gross Cost | After Credits | Payback | 25-Year Savings | Annual kWh |
|---|---|---|---|---|---|
| 6 kW | $17,100 | $11,970 | 8.8 yrs | $31,698 | 8,322 |
| 8 kW | $22,800 | $15,960 | 11.4 yrs | $27,791 | 11,096 |
| 10 kW | $28,500 | $19,950 | 13.7 yrs | $23,801 | 13,870 |
| 12 kW | $34,200 | $23,940 | 15.9 yrs | $19,811 | 16,644 |
Includes 30% federal ITC + 0% Washington state credit. Assumes 3% annual electricity rate increase and 0.5% panel degradation.
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Is Solar Worth It in Washington?
Washington averages 3.8 peak sun hours per day, which means an 8 kW solar system would produce approximately 11,096 kWh per year. At the state's average electricity rate of 11¢/kWh, that translates to significant annual savings on your electric bill.
With the federal 30% Investment Tax Credit and Washington's 0% state incentive, an 8 kW system costing $22,800 drops to just $15,960 after credits — with a payback period of approximately 11.4 years.
Over 25 years, homeowners in Washington can expect to save $27,791 with an 8 kW system, factoring in panel degradation and rising electricity costs. The combination of moderate sun exposure and federal incentives makes solar a solid investment in Washington.