Solar Panel Savings in Washington, IL
Calculate how much you can save with solar panels in Washington, Illinois. Based on 3.9 peak sun hours/day and 12.2¢/kWh average electricity rate.
3.9
Peak Sun Hours/Day
12.2¢
Avg Rate (¢/kWh)
15.7 yr
Payback Period
$28k
25-Year Savings
Washington Solar Overview
Calculate Your Washington Solar Savings
Washington average: $110/mo
South-facing roofs produce the most energy
Add $8,000-$12,000 for whole-home battery backup
Annual Production
kWh/year
Annual Savings
per year
Net System Cost
after 30% ITC
Payback Period
break-even time
25-Year Total Savings
$28,488
Monthly Savings
$70
Federal Tax Credit
$5,472
Cumulative Savings vs System Cost
Cost Breakdown
| Item | Washington | National Avg |
|---|---|---|
| Gross System Cost (6kW) | $18,240 | $17,100 |
| Federal Tax Credit (30%) | -$5,472 | -$5,130 |
| Net System Cost | $12,768 | $11,970 |
| Cost Per Watt | $3.04/W | $2.85/W |
Solar Potential in Washington
Sun Hours vs National Average
Washington gets 13% less sun than the national average, but high-efficiency panels compensate.
Climate Advantages
- 188 sunny days per year
- Average temperature: 49°F — cooler temps actually improve panel efficiency
- Average roof size: 1,597 sq ft — enough for a 88-panel system
Washington Solar Incentives & Programs
Federal Investment Tax Credit (ITC)
30% of total system cost deducted from federal taxes. For a $18,240 system, that's a $5,472 credit. Valid through 2032.
Illinois State Incentives
Adjustable Block Program; SREC market.
Net Metering — ComEd
ComEd offers net metering in Washington. Earn credits for excess solar energy sent to the grid, reducing your electric bill further.
Environmental Impact in Washington
2.8
Tons CO2 Offset/Year
47
Equivalent Trees Planted
0.6
Homes Worth of Energy
Based on 6,833 kWh annual production with a 6kW system. EPA average: 0.417 metric tons CO2 per MWh, 10,632 kWh per US home.
Solar Energy in Washington, Illinois
Washington, Illinois receives an average of 3.9 peak sun hours per day, offering adequate solar resources for homeowners looking to reduce their electricity bills. With electricity rates averaging 12.2¢ per kWh from ComEd, below the national average, but with rates rising 2-3% annually, the long-term savings are still meaningful.
A typical 6kW solar system in Washington produces approximately 6,833 kWh per year, saving homeowners an estimated $834 annually. The system pays for itself in about 15.3 years, after which you enjoy essentially free electricity for the remaining 10+ years of the system's warranty life.
Washington has a solar penetration rate of 2.2% — indicating early-stage solar adoption with tremendous growth potential as prices continue to fall. The cost of living index of 91.2 (national average: 100) reflects a lower cost of living, keeping installation costs competitive.
Other Cities in Illinois
Champaign, IL
Chicago, IL
Joliet, IL
Naperville, IL
Peoria, IL
Rockford, IL
Springfield, IL
Frequently Asked Questions
How much do solar panels cost in Washington, IL?
The average cost of a 6kW solar panel system in Washington is approximately $18,240 before incentives ($3.04/watt). After the 30% federal Investment Tax Credit, the net cost is about $12,768. Adjustable Block Program; SREC market.
How many peak sun hours does Washington get?
Washington, IL receives an average of 3.9 peak sun hours per day and approximately 188 sunny days per year. While below the national average, solar panels can still provide significant savings due to advancing panel technology.
What is the solar payback period in Washington?
The average solar payback period in Washington is approximately 15.7 years. After payback, your solar panels generate essentially free electricity for the remaining 15-20 years of their warranty. Over 25 years, total savings can reach $28,488.
Does Washington have net metering?
Yes, Washington has access to net metering through ComEd. This allows you to earn credits for excess solar energy sent to the grid, significantly improving your solar investment returns.
Is solar worth it in Washington, IL?
Solar can still be worthwhile in Washington, especially with rising electricity rates. The 15.7-year payback means long-term savings of $28,488 over the system lifetime. The 30% federal tax credit and local incentives help make solar financially attractive.