Solar Panel Savings in Honolulu, HI
Calculate how much you can save with solar panels in Honolulu, Hawaii. Based on 6 peak sun hours/day and 42.5¢/kWh average electricity rate.
6
Peak Sun Hours/Day
42.5¢
Avg Rate (¢/kWh)
2.8 yr
Payback Period
$99k
25-Year Savings
Honolulu Solar Overview
Calculate Your Honolulu Solar Savings
Honolulu average: $175/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
$152,754
Monthly Savings
$373
Federal Tax Credit
$5,382
Cumulative Savings vs System Cost
Cost Breakdown
| Item | Honolulu | National Avg |
|---|---|---|
| Gross System Cost (6kW) | $17,940 | $17,100 |
| Federal Tax Credit (30%) | -$5,382 | -$5,130 |
| Net System Cost | $12,558 | $11,970 |
| Cost Per Watt | $2.99/W | $2.85/W |
Solar Potential in Honolulu
Sun Hours vs National Average
Honolulu gets 33% more sun than the national average.
Climate Advantages
- 289 sunny days per year
- Average temperature: 83.7°F — hot climate boosts AC savings from solar
- Average roof size: 1,680 sq ft — enough for a 93-panel system
Honolulu Solar Incentives & Programs
Federal Investment Tax Credit (ITC)
30% of total system cost deducted from federal taxes. For a $17,940 system, that's a $5,382 credit. Valid through 2032.
Hawaii State Incentives
Hawaii Green Energy Money $aver (GEMS); battery incentive program.
Net Metering — Hawaiian Electric (HECO)
Hawaiian Electric (HECO) offers net metering in Honolulu. Earn credits for excess solar energy sent to the grid, reducing your electric bill further.
Environmental Impact in Honolulu
4.4
Tons CO2 Offset/Year
72
Equivalent Trees Planted
1.0
Homes Worth of Energy
Based on 10,512 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 Honolulu, Hawaii
Honolulu, Hawaii receives an average of 6 peak sun hours per day, placing it among the best cities in the country for solar energy production. With electricity rates averaging 42.5¢ per kWh from Hawaiian Electric (HECO), well above the national average of 16¢/kWh, solar panels offer exceptional savings potential.
A typical 6kW solar system in Honolulu produces approximately 10,512 kWh per year, saving homeowners an estimated $4,472 annually. The system pays for itself in about 2.8 years, after which you enjoy essentially free electricity for the remaining 22+ years of the system's warranty life.
Honolulu has a solar penetration rate of 19% — one of the highest adoption rates in the country, reflecting strong community support for solar energy. The cost of living index of 193 (national average: 100) means higher electricity costs, which amplifies solar savings.
Other Cities in Hawaii
Frequently Asked Questions
How much do solar panels cost in Honolulu, HI?
The average cost of a 6kW solar panel system in Honolulu is approximately $17,940 before incentives ($2.99/watt). After the 30% federal Investment Tax Credit, the net cost is about $12,558. Hawaii Green Energy Money $aver (GEMS); battery incentive program.
How many peak sun hours does Honolulu get?
Honolulu, HI receives an average of 6 peak sun hours per day and approximately 289 sunny days per year. This is above the national average of 4.5 hours, making it an excellent location for solar energy.
What is the solar payback period in Honolulu?
The average solar payback period in Honolulu is approximately 2.8 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 $99,242.
Does Honolulu have net metering?
Yes, Honolulu has access to net metering through Hawaiian Electric (HECO). 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 Honolulu, HI?
Absolutely. With a 2.8-year payback period and $99,242 in 25-year savings, solar is an excellent investment in Honolulu. The 30% federal tax credit and above-average electricity rates help make solar financially attractive.