Solar Panels Cost $2.7k-$13k in Wahiawa CDP, HI | August, 2025
High Power Bills?
Reduce or replace your electricity bill with solar
No data available
How much do solar panels cost in Wahiawa CDP, HI in 2025?
No data available
Going solar in the month of August, 2025 in Wahiawa CDP, HI costs $3.88/W.
Expect costs to be $3,880, on average, for every 1000 watts (or 1 kW) of solar energy your solar panels will need to generate. We are able to come to this conclusion by using the rate price cost. In Wahiawa CDP, the cost of a 5 kW system is generally $13,580, after a 30% federal tax credit. A more powerful system could be needed to ensure your energy requirements are met.
To the left, you have the option to select your county and see the typical roof size along with the average maximum capacity for residential solar in homes in your area. Below is a detailed summary of the costs, payback period, and 20-year average savings for a 5 kW system installed in your county.
Average out-of-pocket cost for a 5 kW system The upfront amount spent to buy and install solar.
Wahiawa CDP: $13,580US Average: $12,523
Average Payback Period The number of years until you break even on the solar investment.
Wahiawa CDP: 6 yearsUS Average: 7 years
Average Net 20-year savings The total amount of money saved over 20 years minus the out-of-pocket cost.
Wahiawa CDP: $23,195US Average: $17,429
Solar Potential in Wahiawa CDP
Estimated system size and solar electricity production per median viable roof in Wahiawa CDP.
Roof size 1,162sq. ft.
Capacity 16.25kW DC
Electricity 24.1kkWh AC per yr.
Electricity Costs in Wahiawa CDP, HI & What that Means for Your Solar Panel Pricing
The typical energy consumer in Wahiawa CDP has a monthly electric bill of $177.48 and uses 485 kWh on average. Compact apartments are also encompassed in the numbers noted in the prior sentence. The lower energy use in these types of dwellings impacts those averages.
As of August 2025, the average rate for electricity per kWh in Wahiawa CDP, HI is 36.57¢.
In Wahiawa CDP, average users has to have a system size of 4 kW or greater to fully take care of all of their energy usage requirements. Before incentives, a 4 kW solar system is around $15,520, with the federal tax credit returning 30% of your investment amount, reducing the price to $10,864.
Go Solar for less than your cell phone bill.
Average solar panel costs by system size in Wahiawa CDP
To the left and below, you can find a detailed pricing breakdown for various solar panel system sizes installed in Wahiawa CDP. While a larger solar installation does come with a higher price tag, it also offers increased electricity savings and larger income tax credits.
Check a cost benefit analysis in the solar panel cost calculator down and to the right, for an average electric bill of $177.48 in Wahiawa CDP. Modify the $177.48 to your usual electricity bill payment for customized results.
System Size
Roof Size Min. space required
Electricity Value Annual Production
Est. Price
System Size 1kW
Roof Size Min. space required
72 ft²
Electricity Value Annual Production $568 a year
Est. Price
$2,716
Savings from a 1kWthis system
Est. yearly production 1,535 kWh
Est. monthly savings $47
Full payback in 1 years
Environmental Impacts
Reduces CO2 emissions by 1.09 tons a year
Equivalent to planting 50 trees a year
Equivalent to driving 2,704 mi less a year
System Size 2kW
Roof Size Min. space required
143 ft²
Electricity Value Annual Production $1,136 a year
Est. Price
$5,432
Savings from a 2kWthis system
Est. yearly production 3,071 kWh
Est. monthly savings $95
Full payback in 3 years
Environmental Impacts
Reduces CO2 emissions by 2.18 tons a year
Equivalent to planting 100 trees a year
Equivalent to driving 5,407 mi less a year
System Size 3kW
Roof Size Min. space required
215 ft²
Electricity Value Annual Production $1,704 a year
Est. Price
$8,148
Savings from a 3kWthis system
Est. yearly production 4,606 kWh
Est. monthly savings $142
Full payback in 4 years
Environmental Impacts
Reduces CO2 emissions by 3.28 tons a year
Equivalent to planting 151 trees a year
Equivalent to driving 8,111 mi less a year
System Size 4kW
Roof Size Min. space required
286 ft²
Electricity Value Annual Production $2,272 a year
Est. Price
$10,864
Savings from a 4kWthis system
Est. yearly production 6,141 kWh
Est. monthly savings $177
Full payback in 5 years
Environmental Impacts
Reduces CO2 emissions by 4.08 tons a year
Equivalent to planting 188 trees a year
Equivalent to driving 10,109 mi less a year
System Size 5kW
Roof Size Min. space required
358 ft²
Electricity Value Annual Production $2,840 a year
Est. Price
$13,580
Savings from a 5kWthis system
Est. yearly production 7,677 kWh
Est. monthly savings $177
Full payback in 6 years
Environmental Impacts
Reduces CO2 emissions by 4.08 tons a year
Equivalent to planting 188 trees a year
Equivalent to driving 10,109 mi less a year
Wahiawa CDP Solar Panel Installation Incentives & Rebates | 2025
For rural farms and small businesses, the REAP Grant might currently cover between 80% and 100% of the expenses for installing solar or wind energy systems. Curious if you fit this category? Confirm your eligibility with our REAP Grant eligibility tool.
Nearly all residents are eligible for the 30% federal income tax credit for residential solar, which makes it a practical option in many states in the country. In addition to the federal incentives, state and local programs also aim to boost solar energy uptake.
Hawaii provides 15 solar rebates and incentives from multiple utility companies and government organizations.
Solar incentives in HIIncentive Description Value
Solar and Wind Energy Credit (Personal)
Value:Up to $2,250
Beginning in the 1976 tax year, Hawaii businesses have been entitled to income tax credits on new renewable energy devices. The exact rates and amounts of exemptions vary depending on property classification and the specific type of energy system being installed. In each classification, "hard maximums" apply based on the retail price of the system. Amendments to the tax code have since allowed for credit amounts to be paid out as refunds or used toward income liability for the appropriate tax year. Additional information is available on the Hawaii Department of Taxation website.
Solar Water Heater Rebate
Value:Up to $500
Residential customers of the Hawaiian Electric Company, Maui Electric Company, or Hawaii Electric Light Company may be entitled to a one-time rebate to install or replace a solar water heater. Two rebate options, flat rates of $500 or $750, are available depending on the cost of the system. Either rebate will be paid to the solar contractor installing the water heater, meaning it will appear to the customer as a bill credit. Qualifying systems should satisfy all state standards for solar water heating and pass a final inspection from the utility. The program is available on the islands of Oahu, Maui, Hawaii, Molokai, and Lanai. Additional information is available from the HEC website.
Solar and Wind Energy Credit (Corporate)
Value:Up to $2,250
Beginning in the 1976 tax year, Hawaii residents have been entitled to income tax credits on new renewable energy devices. The exact rates and amounts of exemptions vary depending on property classification and the specific type of energy system being installed. In each classification, "hard maximums" apply based on the retail price of the system. Amendments to the tax code have since allowed for credit amounts to be paid out as refunds or used toward income liability for the appropriate tax year. Additional information is available on the Hawaii Department of Taxation website.
Distributed Generation Tariffs
Value:Varies
Interconnected renewable energy and distributed generation customers throughout Hawaii may be compensated for using their system through either grid-supply or Smart Export tariffs (net metering was abolished in 2015.) Under grid-supply tariffs, customer-generators will be credited on their monthly bills for energy sent back to the grid. Unlike net metering, the utility has direct control over how much energy is returned; this is to protect the grid and standardize capacity as per requirements. Different islands have different rate schedules, and rates will vary from time to time. Smart Export tariffs apply to renewable energy systems containing a separate storage module. Excess generation from the system will be used to charge the battery during the daytime, and this energy will be returned to the grid at night. Like grid-supply programs, different islands have different rate schedules for this excess generation. "Community-based tariffs" may apply for microgrid subscribers. These programs function similarly to individual systems, but compensation will be distributed to all subscribers in the proper proportions.
GreenSun Hawaii
Value:Varies
GreenSun Hawaii is an established loss reserve funded by the 2009 federal stimulus package. A variety of lenders throughout the state may tap into the fund to secure loans for homeowners seeking to install new renewable energy devices or make energy efficiency improvements. By having their loans secured, lenders are incentivized to offer lower rates and more optimal terms. Eligible projects include solar PV/water heating/HVAC systems, windows, insulation/weatherization, and ENERGY STAR certified appliances. Interested homeowners should visit the program website to find their local GreenSun lender.
City and County of Honolulu - Solar Loan Program
Value:Varies
Low to moderate-income homeowners in Honolulu or greater Oahu may be eligible for specialized financing on new solar PV/water heating systems, including any necessary roofing work for a successful installation. Condominium owners may also be eligible contingent on approval from their association. Loans come at zero interest, but they may be secured by a mortgage lien if the principal exceeds $10,000. Application forms are available from the City/County of Honolulu website.
Renewables and Efficiency in State Facilities & Operations
Value:Varies
In 2006, Hawaii governor Linda Lingle established new renewable energy standards for state agencies to follow by signing HB 2175. The new law contained: • a minimum LEED Silver certification requirement for all new state buildings, • a solar water heating requirement for all new state buildings, • a requirement for agencies to implement common-sense water and energy saving operational measures, • an order for agencies to purchase only environmentally-friendly products, • and a directive for agencies to track emissions from vehicles. Compliance with the law is measured through annual reports addressed to the legislature.
KIUC - Solar Water Heating Rebate Program
Value:Varies
Energy Wise is a program for commercial customer-members of the Kauai Island Utility Cooperative. Through the program, property owners may receive free advisory services for their energy efficiency and renewable energy needs. A new initiative under Energy Wise awards new solar water heating installations with a $1000 rebate. Eligible systems may be brand new or replace an existing solar water heater over 15 years of age. Additional information is available from the KIUC website.
Feed-in-Tariff
Value:Varies
NOTE: This program is no longer accepting participants. Solar PV, wind, and hydro customers of HECO, MECO, and HELCO may be eligible for the state's feed-in tariff program. Under the program, utilities may sign 20-year contracts to obtain the excess generation from the system in exchange for a fixed rate. Rates vary depending on the method of generation, the rated capacity of the system, and the island on which the system is located. Additional information is available from the Hawaii Department of Energy website.
Solar Contractor Licensing
Value:Varies
The Hawaii Department of Commerce and Consumer Affairs is responsible for issuing contracting licenses in the state. A variety of specialized solar work licenses are available depending on an applicant's training and vocational experience. Solar contracting licenses include C-60 (solar power), C-61 (solar energy), C-61a (solar hot water), and C-61b (solar HVAC). Each license has a separate exam, but all require four years of experience. To install and professionally repair the full breadth of solar PV systems, contractors should pursue a C-13 electrical license, which includes all the privileges of a C-60 solar power license. Plumbing contractors with license C-37 may work with solar water heaters. General contractors have the privileges afforded by a C-61 license. Depending on the license a solar contractor holds, they may need to subcontract certain plumbing or electrical jobs if they do not have the required license. State law requires licensed electricians/plumbers to sign off on any new PV or solar water heater.
City and County of Honolulu - Real Property Tax Exemption for Alternative Energy Improvements
Value:Varies
Any private renewable energy system in Honolulu carries a 25-year local tax exemption by ordinance of the city council. Solar, wind, biomass, and hydroelectric systems qualify for an exemption, as do systems improving energy efficiency at fossil fuel plants. Geothermal and nuclear systems are not exempt. Additional information is available from the Real Property Assessment Division website.
KIUC - Solar Water Heating Loan Program
Value:Varies
Residential members of the Kauai Island Utility Cooperative may be eligible for specialized financing on solar water heaters. Funding may be used to install a new system or replace an existing one over 15 years of age. Loans are serviced by the Kauai Community Federal Credit Union. There is no interest or down payment (both are covered by the utility.) The maximum repayment period is 60 months. The application process involves standard credit checks and a pre-installation audit by KIUC to determine compliance with state standards. Additional information is available from the KIUC website.
Renewable Portfolio Standard
Value:Varies
Beginning in 2009, the Hawaii state government has established a legally binding renewable portfolio standard (RPS) for itself. Previously, RPS laws included provisions for both new renewable energy projects and energy efficiency improvements/offsets; however, only projects falling under the former category meet RPS requirements as of 2015. By 2030, at least 40% of all energy generated in Hawaii must be from renewable sources. 100% of Hawaii's energy should be renewable by 2045. Compliance is measured through a Renewable Energy Credit system and reports sent to the legislature every five years. Additional information is available from the Hawaii Department of Energy website.
Hawaii Energy
Value:Varies
The Hawaii Energy benefits fund supports new renewable energy and energy efficiency incentive programs throughout the state, including public investments toward RPS standards. The fund is supported by a surcharge on all customer utility bills, and its annual budget is determined by each utility's demand. Currently, funds support public bonds for new renewable farms and incentive programs overseen by utilities on five islands. Additional information is available on the fund's website.
Farm and Aquaculture Alternative Energy Loan
Value:Varies
Hawaiian farmers, including fish farmers, may be eligible for special financing from the state government to fund energy efficiency/renewable energy improvement projects. Loans have a maximum principal of 85% of the applicant's project costs up to $1.5 million. Interest rates vary between agriculture and aquacultural property, but they will range from 3 - 5% on unpaid principal only. Repayment periods may extend up to forty years. Loans are serviced by the state Department of Agriculture. The application process includes standard credit checks. Additional information is available from the DOA website.
Are solar panels worth it in Hawaii?
If you foresee living in your home longer than the solar system's payback period, installing solar panels is an smart decision in Wahiawa CDP. By installing a 5 kW solar system in Wahiawa CDP, HI, you can expect to save approximately $29,015.2 over 20 years, with the break even point typically being 6 years.
The cost of not having solar panels in Wahiawa CDP, HI
Failing to have solar panels or an alternative backup energy results in missing the savings mentioned earlier and being completely reliant on your electric utility for electricity. Numerous recent examples in the news have highlighted that complete reliance on your utility company is not always the best option.
In recent times, utilities in Hawaii have recorded an average of 1.44 outages per customer annually. Typically, outages have an average duration of 122.37 minutes. However, during significant events such as thunderstorms, wildlife damage, or grid management errors, these times can drastically increase.
A solar panel system, whether or not it has a backup battery, could reduce the impact of future outages you might experience.
Power Outages
Currently, 0 customers are being tracked in Honolulu County.
What impacts the cost of solar panels in Wahiawa CDP, HI?
Your Energy Needs - Investing in larger solar panel systems costs more upfront, but the price per watt is lowered as the system size grows. For most homeowners, setting up a system that can generate enough power to eliminate their entire electric bill is useful, providing significant savings.
Make & Model - Solar panels, like many other products, are available in various makes and models. Your contractor’s potential brand preferences make it crucial to choose a reputable contractor. For buyers desiring a more favorable long-term experience, investing in superior quality makes and models is critical.
Solar Panel Type - The standard in the industry is now monocrystalline panels, and justifiably so. These panels have a higher cost but yield more energy. The majority of installers in the industry work with panels constructed of this material.
Your Property - Trees, uneven landscapes, or other obstacles can increase the complexity of the installation. These days, solar installers can leverage satellite images to assess your home and factor in these factors into the first cost estimate.
Labor Rates - Companies compensate their employees in varying amounts, and these costs are borne by consumers. Companies that invest in higher wages often see higher reviews for their work and customer service.
Permitting & Interconnection - Local permitting and utility interconnection fees, which vary by region, will influence your final installation cost. Reliable local installers will build these figures into your preliminary estimates to prevent any surprises.
The cost per watt for solar panels in Wahiawa CDP, HI during August of 2025 averages $3.88/W. After federal tax credits, the installation of a 5 kW solar panel system in Wahiawa CDP, HI is estimated to cost $13,580.
Currently, Hawaii residents can benefit from 15 rebates and incentives available through various utilities and government bodies. On top of that, nearly everyone can qualify for the 30% federal tax credit.
Even though cash payments yield the greatest savings, several financing options for solar panels today are also financially beneficial. Information about financing options is typically included in initial quotes provided by installers.
Yes, in Wahiawa CDP, HI, 5 kW solar panel systems typically pay off in 6 years, and users save around $29,015.2 in electricity costs over 20 years.
Savings from 
Environmental Impacts 
