Solar Panel Savings in Hilo, HI
Calculate how much you can save with solar panels in Hilo, Hawaii. Based on 5.8 peak sun hours/day and 39.3¢/kWh average electricity rate.
5.8
Peak Sun Hours/Day
39.3¢
Avg Rate (¢/kWh)
3.1 yr
Payback Period
$87k
25-Year Savings
Hilo Solar Overview
Calculate Your Hilo Solar Savings
Hilo average: $146/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
$136,324
Monthly Savings
$333
Federal Tax Credit
$5,382
Cumulative Savings vs System Cost
Cost Breakdown
| Item | Hilo | 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 Hilo
Sun Hours vs National Average
Hilo gets 29% more sun than the national average.
Climate Advantages
- 257 sunny days per year
- Average temperature: 75.9°F — hot climate boosts AC savings from solar
- Average roof size: 1,707 sq ft — enough for a 94-panel system
Hilo 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
Hawaiian Electric offers net metering in Hilo. Earn credits for excess solar energy sent to the grid, reducing your electric bill further.
Environmental Impact in Hilo
4.2
Tons CO2 Offset/Year
70
Equivalent Trees Planted
1.0
Homes Worth of Energy
Based on 10,162 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 Hilo, Hawaii
Hilo, Hawaii receives an average of 5.8 peak sun hours per day, placing it among the best cities in the country for solar energy production. With electricity rates averaging 39.3¢ per kWh from Hawaiian Electric, well above the national average of 16¢/kWh, solar panels offer exceptional savings potential.
A typical 6kW solar system in Hilo produces approximately 10,162 kWh per year, saving homeowners an estimated $3,991 annually. The system pays for itself in about 3.1 years, after which you enjoy essentially free electricity for the remaining 22+ years of the system's warranty life.
Hilo has a solar penetration rate of 17.2% — one of the highest adoption rates in the country, reflecting strong community support for solar energy. The cost of living index of 200 (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 Hilo, HI?
The average cost of a 6kW solar panel system in Hilo 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 Hilo get?
Hilo, HI receives an average of 5.8 peak sun hours per day and approximately 257 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 Hilo?
The average solar payback period in Hilo is approximately 3.1 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 $87,242.
Does Hilo have net metering?
Yes, Hilo has access to net metering through Hawaiian Electric. 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 Hilo, HI?
Absolutely. With a 3.1-year payback period and $87,242 in 25-year savings, solar is an excellent investment in Hilo. The 30% federal tax credit and above-average electricity rates help make solar financially attractive.