*Prices are shown after applying the 30% federal tax credit.
As of Apr 2024, the average cost of solar panels in Kailua is $2.68 per watt making a typical 6000 watt (6 kW) solar system $11,250 after claiming the 30% federal solar tax credit now available.
This is lower than the average price of residential solar power systems across the United States which is currently $3.00 per watt.
The size of a solar panel system also plays a role in how much the installation will cost.
Larger solar installations will typically have a lower cost per watt, because the panels can be purchased at a ‘bulk price’. However, these larger solar systems will still have a higher total cost, because they are made up of more individual panels.
System size* | Avg cost per watt |
Avg system cost
(After tax credit) show before tax |
---|---|---|
4kW | $2.92 | $8,183 |
5kW | $2.81 | $9,818 |
6kW | $2.68 | $11,250 |
7kW | $2.65 | $12,992 |
8kW | $2.69 | $15,079 |
9kW | $2.60 | $16,362 |
10kW | $2.57 | $17,990 |
Best unit price
$320.00 ($0.96 per watt)
Best system price
Installed 5.0kW system
$12,721.85
($2.53 p/w)
LG335N1K-V5 overview
Rated power
335 watts
Efficiency
19.6
Number of Cells
60
Cell type
Monocrystalline/N-type
Manufactured
KR
Best unit price
$562.50 ($1.50 per watt)
Best system price
Installed 4.9kW system
$12,120.18
($2.49 p/w)
LG375A1C-V5 overview
Rated power
375 watts
Efficiency
21.7
Number of Cells
60
Cell type
Monocrystalline/N-type
Manufactured
KR
Best unit price
$430.00 ($1.15 per watt)
Best system price
Installed 4.9kW system
$12,919.30
($2.65 p/w)
LG375Q1C-V5 overview
Rated power
375 watts
Efficiency
21.7
Number of Cells
60
Cell type
Monocrystalline/N-type
Manufactured
KR
Best unit price
$473.34 ($1.30 per watt)
Best system price
Installed 5.1kW system
$13,231.07
($2.59 p/w)
LG365Q1K-V5 overview
Rated power
365 watts
Efficiency
21.1
Number of Cells
60
Cell type
Monocrystalline/N-type
Manufactured
KR
Best unit price
$432.00 ($1.20 per watt)
Best system price
Installed 5.0kW system
$13,276.66
($2.63 p/w)
LG360Q1K-V5 overview
Rated power
360 watts
Efficiency
20.8
Number of Cells
60
Cell type
Monocrystalline/N-type
Manufactured
US
Best unit price
$530.85 ($1.50 per watt)
Best system price
Installed 5.0kW system
$12,386.87
($2.49 p/w)
LG355Q1K-V5 overview
Rated power
355 watts
Efficiency
20.6
Number of Cells
60
Cell type
Monocrystalline/N-type
Manufactured
US
Best unit price
$495.00 ($1.38 per watt)
Best system price
Installed 5.0kW system
$13,091.06
($2.60 p/w)
LG360Q1C-V5 overview
Rated power
360 watts
Efficiency
20.8
Number of Cells
60
Cell type
Monocrystalline/N-type
Manufactured
US
Best unit price
$407.97 ($1.10 per watt)
Best system price
Installed 5.2kW system
$13,159.30
($2.54 p/w)
LG370Q1C-V5 overview
Rated power
370 watts
Efficiency
21.4
Number of Cells
60
Cell type
Monocrystalline/N-type
Manufactured
US
Best unit price
$323.39 ($0.97 per watt)
Best system price
Installed 5.0kW system
$12,691.01
($2.53 p/w)
LG335N1C-V5 overview
Rated power
335 watts
Efficiency
19.6
Number of Cells
60
Cell type
Monocrystalline/N-type
Manufactured
US
Best unit price
$338.19 ($0.99 per watt)
Best system price
Installed 5.1kW system
$0.00
($0.00 p/w)
LG340N1C-V5 overview
Rated power
340 watts
Efficiency
19.8
Number of Cells
60
Cell type
Monocrystalline/N-type
Manufactured
US
Best unit price
$600.00 ($1.83 per watt)
Best system price
Installed 4.9kW system
$12,808.41
($2.61 p/w)
SPR-E20-327-COM overview
Rated power
327 watts
Efficiency
20.4
Number of Cells
96
Cell type
Monocrystalline
Manufactured
US
Best unit price
$800.00 ($2.22 per watt)
Best system price
Installed 5.0kW system
$13,201.67
($2.62 p/w)
SPR-X22-360 overview
Rated power
360 watts
Efficiency
22.2
Number of Cells
96
Cell type
Monocrystalline
Manufactured
US
Best unit price
$620.00 ($1.90 per watt)
Best system price
Installed 4.9kW system
$13,703.10
($2.79 p/w)
SPR-E20-327-D-AC overview
Rated power
327 watts
Efficiency
20.4
Number of Cells
96
Cell type
Monocrystalline
Manufactured
US
Best unit price
$620.00 ($1.90 per watt)
Best system price
Installed 4.9kW system
$13,610.59
($2.77 p/w)
SPR-E20-327 overview
Rated power
327 watts
Efficiency
20.4
Number of Cells
96
Cell type
Monocrystalline
Manufactured
US
Best unit price
$181.00 ($0.60 per watt)
Best system price
Installed 5.1kW system
$11,003.04
($2.16 p/w)
CS6K-300MS overview
Rated power
300 watts
Efficiency
18.33
Number of Cells
60
Cell type
Monocrystalline
Manufactured
CA
Best unit price
$196.11 ($0.65 per watt)
Best system price
Installed 5.1kW system
$9,948.02
($1.95 p/w)
LR6-60-HPB-300M overview
Rated power
300 watts
Efficiency
18.1
Number of Cells
120
Cell type
Mono PERC
Manufactured
CN
Best unit price
$172.00 ($0.56 per watt)
Best system price
Installed 4.9kW system
$9,568.53
($1.96 p/w)
LR6-60-HPB-305M overview
Rated power
305 watts
Efficiency
18.4
Number of Cells
120
Cell type
Mono PERC
Manufactured
CN
Best unit price
$165.00 ($0.53 per watt)
Best system price
Installed 5.0kW system
$9,761.72
($1.97 p/w)
LR6-60-HPB-310M overview
Rated power
310 watts
Efficiency
18.7
Number of Cells
120
Cell type
Mono PERC
Manufactured
CN
Best unit price
$228.00 ($0.60 per watt)
Best system price
Installed 4.9kW system
$9,579.65
($1.94 p/w)
LR4-60HPH-380M overview
Rated power
380 watts
Efficiency
20.9
Number of Cells
120
Cell type
Mono PERC
Manufactured
CN
Best unit price
$234.00 ($0.60 per watt)
Best system price
Installed 5.1kW system
$10,126.74
($2.00 p/w)
LR6-72HBD-390M overview
Rated power
390 watts
Efficiency
19.4
Number of Cells
144
Cell type
Mono PERC
Manufactured
CN
4.74 61 Reviews
Steve & Ohua M, 3 weeks ago
Working with Sean Grady and the Pacific Energy company has been the best way to add our Tesla battery and extra solar panels. We almost went with a nationwide company, but after meeting with Sean, we decided to stay local. We are extremely satisfied we did. The service from the beginning has been smooth, efficient and quick. Adan and his installation team were excellent and the electrician who came to hook up our system was helpful and very knowledgeable. We appreciate this company and recommend if you need a reliable and immediate service, go with Pacific Energy and Sean Grady. They will not disappoint you.
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Steve & Ohua M, 3 weeks ago
Working with Sean Grady and the Pacific Energy company has been the best way to add our Tesla battery and extra solar panels. We almost went with a nationwide company, but after meeting with Sean, we decided to stay local. We are extremely satisfied we did. The service from the beginning has been smooth, efficient and quick. Adan and his installation team were excellent and the electrician who came to hook up our system was helpful and very knowledgeable. We appreciate this company and recommend if you need a reliable and immediate service, go with Pacific Energy and Sean Grady. They will not disappoint you.
4.56 22 Reviews
Mistress-of-Zappppp, 2 weeks ago
I can't say enough about Rising Sun and our local rep, Jeremy. I never used other companies on Kaua'i, so maybe I'm myopic. Bit with excellent quality and followup service, if and when needed, I've no reason to look elsewhere. In fact, we're asking Jeremy to help us expand our current system, now that we have two electric cars on island.
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Mistress-of-Zappppp, 2 weeks ago
I can't say enough about Rising Sun and our local rep, Jeremy. I never used other companies on Kaua'i, so maybe I'm myopic. Bit with excellent quality and followup service, if and when needed, I've no reason to look elsewhere. In fact, we're asking Jeremy to help us expand our current system, now that we have two electric cars on island.
Lionel S, over 1 month
<br />
Lew Abrams, over 1 month
<br />
4.18 50 Reviews
C man, over 1 month
Accused me of keying his truck after he read my bumper sticker on my truck , it said "Quanon- multi generational defect caused by the bad acid at Woodstock!", my guess, after reading some of the reviews of him is that maybe one or both of his relatives, and even maybe, that is where he was concieved, ,and he took offense to my bumper sticker cause right after he read it it popped up and said to me that he hadn't got a covid vaccination and didn't believe in it, which I thought to myself, ooooh k, and then asked me if I had gotten my vaccination which I replied yes. Which then a few days later when I returned to finish my work, I had to leave because he wanted to fight me, he kept on telling me he was a being a nice guy and to "get the f out of there. I was 66 at that time and he was 52, if I was his age there would have been a fight but it takes to long to recover from injury after you get older so I left, but I did hear 1 of his employee's ask another one " what the hell is he doing " and then when one of the younger guys that worked for the company I worked for went to the job to confront him the 2 guys that where wondering what he was doing at the time he was telling me how nice a guy he was apologized to him for the crap their boss had given me, good thing Ryan wasn't there, the young man who went looking for him was a local boy and, well let's say it wouldn't have ended up well for Mr Nice Guy. Maybe that's why he's left the state, because he threatened many older people and the younger friends wanted him to be taught how to respect others. All this happened in 2021, so believe what you read about this wanna be 52 yr old high school bully, maybe he was deservent of his rating years ago but the last most recent reviews show and tell of his work and personality. Beware of this guy if he ever comes back!
Read more
C man, over 1 month
Accused me of keying his truck after he read my bumper sticker on my truck , it said "Quanon- multi generational defect caused by the bad acid at Woodstock!", my guess, after reading some of the reviews of him is that maybe one or both of his relatives, and even maybe, that is where he was concieved, ,and he took offense to my bumper sticker cause right after he read it it popped up and said to me that he hadn't got a covid vaccination and didn't believe in it, which I thought to myself, ooooh k, and then asked me if I had gotten my vaccination which I replied yes. Which then a few days later when I returned to finish my work, I had to leave because he wanted to fight me, he kept on telling me he was a being a nice guy and to "get the f out of there. I was 66 at that time and he was 52, if I was his age there would have been a fight but it takes to long to recover from injury after you get older so I left, but I did hear 1 of his employee's ask another one " what the hell is he doing " and then when one of the younger guys that worked for the company I worked for went to the job to confront him the 2 guys that where wondering what he was doing at the time he was telling me how nice a guy he was apologized to him for the crap their boss had given me, good thing Ryan wasn't there, the young man who went looking for him was a local boy and, well let's say it wouldn't have ended up well for Mr Nice Guy. Maybe that's why he's left the state, because he threatened many older people and the younger friends wanted him to be taught how to respect others. All this happened in 2021, so believe what you read about this wanna be 52 yr old high school bully, maybe he was deservent of his rating years ago but the last most recent reviews show and tell of his work and personality. Beware of this guy if he ever comes back!
4.17 8 Reviews
Tsuruda, over 1 month
Taryn who sold me on the company is down to earth and has responded to my calls. Sean emailed me gentle reminder and did the follow up. Joeffer, Blake, Mike, Dave, Devin and Soren worked hard both days to get our big job completed. They were professional and a good team. Installing was neat and precise. I appreciated the honesty. I am looking forward to the results.
Read more
Tsuruda, over 1 month
Taryn who sold me on the company is down to earth and has responded to my calls. Sean emailed me gentle reminder and did the follow up. Joeffer, Blake, Mike, Dave, Devin and Soren worked hard both days to get our big job completed. They were professional and a good team. Installing was neat and precise. I appreciated the honesty. I am looking forward to the results.
4.10 5 Reviews
Ray Broggini, over 1 month
We`ve been priveleged to use RES, Inc before and find them extremely good. We`ve had solar for decades, first in CA, and service there was also good with the right company. We`re glad to recommend RES anytime to anyone.<br />We`re off the grid to tie-in questions are N/A. The gov`ts should give larger and easier to obtain incentives if solar is ever going to be as big as it should be. But look at the government we have now---they act clueless!
Read more
Ray Broggini, over 1 month
We`ve been priveleged to use RES, Inc before and find them extremely good. We`ve had solar for decades, first in CA, and service there was also good with the right company. We`re glad to recommend RES anytime to anyone.<br />We`re off the grid to tie-in questions are N/A. The gov`ts should give larger and easier to obtain incentives if solar is ever going to be as big as it should be. But look at the government we have now---they act clueless!
4.08 15 Reviews
Richard in Kailua Kona, over 1 month
We purchased this system in 2023, based on the "IMPLIED" sales pitch that the company was going to opening an office in Kailua Kona. We were told by the the salesman that technical response would be within 24 to 48 hours. I should have gotten everything in writing! As of this writing, our system has shut down 4 times within the last 6 months. While the tech support has resolved the issue, they do not respond within the 24-48 hours that we were led to believe. Since they operate out of Hilo, we've been lucky to get them here within a week. There was once exception when it was 2 days but that isn't the norm. I've gotten support by calling the Tesla contact center, but there is only so much that they can do. The latest issue was somewhat resolved with the support of the contact center. The agent did escalate the issue to another level but it may be 15 days before a more knowledgeable Tesla technician has the opportunity to look at all the issues that we've had. He did agree that this shouldn't be happening but he doesn't believe that it's a Tesla issue, but he wasn't in a position to make that decision. I did contact the Provision tech who said that he was looking into it. I haven't heard anything back from Provision.
Read more
Richard in Kailua Kona, over 1 month
We purchased this system in 2023, based on the "IMPLIED" sales pitch that the company was going to opening an office in Kailua Kona. We were told by the the salesman that technical response would be within 24 to 48 hours. I should have gotten everything in writing! As of this writing, our system has shut down 4 times within the last 6 months. While the tech support has resolved the issue, they do not respond within the 24-48 hours that we were led to believe. Since they operate out of Hilo, we've been lucky to get them here within a week. There was once exception when it was 2 days but that isn't the norm. I've gotten support by calling the Tesla contact center, but there is only so much that they can do. The latest issue was somewhat resolved with the support of the contact center. The agent did escalate the issue to another level but it may be 15 days before a more knowledgeable Tesla technician has the opportunity to look at all the issues that we've had. He did agree that this shouldn't be happening but he doesn't believe that it's a Tesla issue, but he wasn't in a position to make that decision. I did contact the Provision tech who said that he was looking into it. I haven't heard anything back from Provision.
Ron Hays, over 1 month
<br />
4.06 3 Reviews
Anonymous, over 1 month
Our sales person Tobey was great and took care of things from day one. Everything was smooth and speedy installation. I strongly recommend Tobey to help you with your purchase of solar power.
Read more
Anonymous, over 1 month
Our sales person Tobey was great and took care of things from day one. Everything was smooth and speedy installation. I strongly recommend Tobey to help you with your purchase of solar power.
Where there is no specific pricing information available for a brand then we have used state pricing data for that brand.
Solar panel manufacturer | Avg. cost per watt |
---|---|
Canadian Solar | $2.50 |
LG Solar | $2.98 |
SunPower | $3.12 |
Panasonic | $3.01 |
LONGi Solar | $2.41 |
The most important difference between buying solar panels and any other purchase is that solar panels last 25-30 years. This is a long, long time and you will need customer service over all that time. The reviews below of the two largest corporate solar installation companies indicate larger corporate solar companies are not delivering this support to their customers.
We recommend you find a small or mid-size, local, family-owned solar company. These companies tend to care more about you and your specific job. You don't want to be on hold to a corporation's call center for the next 25 years!
The cost of solar doesn't just include the equipment and installation costs - it’s also made up of permitting costs, inspection costs, and installer profit margins.
These different components are what make the price of solar fluctuate between installations. Some of the factors that affect solar power system installation costs for specific homes include:
Homes that use more electricity will need more solar panels to cover their energy needs.
Although solar panels do get cheaper on a per-watt basis, the overall cost of the system will increase as more panels are added.
But, the higher a home’s energy usage, the more solar panels can save the homeowners on their energy bills.
The price of solar panels can vary depending on the type of solar panels you choose.
There are two main types of solar panels for residential solar installations: monocrystalline and polycrystalline. Monocrystalline solar panels tend to be more efficient and more expensive than other solar panels. Polycrystalline panels have a lower efficiency rating and come at a lower price point.
The type of inverter you buy will also influence the cost of your solar system.
You may see some solar quotes with prices that seem too good to be true.
If you get quoted for a ridiculously cheap price, the installer might be using low-quality equipment or an unsustainable pricing model. You want to use a solar installer that is charging enough so that they can stay in business - as you’ll be relying on them for the next 25 years!
It’s important to make sure that your installer is giving you the best quality at the best price possible. This is why getting multiple solar quotes is so important.
The overall cost of solar can be influenced by the solar incentives available.
Across the U.S., homeowners can apply for the federal solar tax credit. The solar tax credit makes installing solar more cost-effective by providing homeowners with a tax credit equal to 30% of the cost of their installed solar panel system.
Local solar tax incentives and rebates can end up saving homeowners thousands on a solar installation, especially when they’re used with the federal solar tax credit.
See what solar incentives are available in your area by using our solar panel calculator.
The cost of installing residential solar panels in Kailua varies with the brand of solar panels and inverters you choose, the installation company you choose to install them, the relative ease or difficulty of installing solar panels on your home, and of course the amount of solar panels you need. The amount of solar panels you need is, in turn, related to your energy usage.
The table below shows the data extracted from a real life quote delivered through the SolarReviews marketplace recently for a fairly typical home in Kailua.
As you can see the payback period is relatively short and equates to a much better return on investment than he historical returns that have been available from investing in things like shares or property.
System information | Value |
---|---|
System Size (for 100% usage offset) | 7.68 kW |
Annual power generation | 13,412 kWh |
Pay-back time (assuming Cash purchase) | 8.8 Years |
Internal rate of return (IRR) on investment | 7.4% |
Gross cost | $21,969 |
Total Upfront Incentives and Rebates | -$6,711 |
Net Cost of System after rebated and incentives | $15,255 |
Total Cost of Utility Power Avoided over 25 years | $56,157 |