This is the second time we have gone to Hi Power Solar for our solar needs. Called Cindy and she…read moregave us excellent service. This time we wanted to add a battery to our PV. She came over to look at our system after researching what we had installed. (Hi Power Solar did not install our PV.) After confirming what she thought, she went over our options. The team did a great job and we are thrilled with our new battery system. Thank you, HI Power Solar!!

I chose this company based on their previous reviews, their family owned small-business model, and…read moretheir personable communication. When I first contacted them, they were very responsive, came out to our house multiple times to check it out, and even offered very reasonable and competitive pricing. Installation had a few hiccups because our house is old, weird, and probably very hard to work with, but we're very happy with our system. All the kinks that the team had to work through were fixed/solved in a very timely and quality manner. The only problem we had was getting updates between signing our agreement and installation. Understandably we waited pretty long to hear anything about installation due to the overload all solar companies were experiencing due to the federal tax credit being cut next year. Our drawings were back logged, not because of HI Power, but because of the approvals they were waiting for. But I had to reach out to multiple people at multiple times before someone could explain this to me. This really stressed us out for a bit that no one was getting back to us, but once they explained all the issues they were facing, everything worked out perfectly. I would still like to recommend this company compared to other bigger companies based off of my parent's and grandparent's experiences.

Sid and his team at PV Tech did an amazing 16 panel installation today! The whole process was…read moreterrific. First, Sid was very patient with my numerous questions over an extended period as I shopped around our options. Sid was not only very informative, but also transparent about benefits of number of panels and the +/- of installing batteries. Then when we gave the green light: there team was very meticulous with setting up the plan and process for the install. Then when the crew came for the install, they took in consideration my thoughts and in the end, the result was actually better then anticipated! I would highly recommend!

I signed a contract with Sid and PV Tech in August 2025 for a new PV system and also specifically…read moreincluding repairs to my existing PV system. It is now June 2026 - 10 months later! - and the new system is in but my existing PV system has still not been repaired. I find myself constantly contacting them to come back and finish the repairs, but on multiple occasions a date is set and then nobody shows up. This just happened again last week. I feel quite frustrated. The technicians that I have dealt with have been great, but I am very tired of spending my time trying to get the front office to finish this repair request. While I picked them because they are based in Manoa and I wanted to support a local business, I cannot recommend them. Half of my panels are still not working and thus I am losing more money every month this goes on. Beware if they make promises to fix your existing system in order to get you to hire them.

We went with Kumu Kit (now Hawaii Energy) back in 2022 and have nothing but good things to say…read moreabout our system and especially Shane. The company will reach out when they notice something isn't quite right with our panels or batteries and will be over to repair if needed. Shane always arrives as scheduled and is great at explaining what is being done. 10/10 highly recommended!

Shane Mulleitner has been great to work with for my battery needs. He is always accessible and…read moreresponsive.

The person that answered the phone suggested simple maintenance thing (2 minute) to do that might…read morefix the issue. And it worked.

Spoke with Chaleigh Reed regarding micro-inverter warranty…read more When Solar Help Hawaii replaced micro inverters in 2016 and apparently inputted the wrong address. ( two houses on one lot ) ( 440-442 ) Therefore Enphase would not honor the warranty. They said the micro-inverters had been moved ! Ms. Reed was extremely rude and unprofessional. Rather than trying to help, she ( relied ) on the fact that the same DBA was dissolved in 2017 following the death of her brother. Poor customer service................. Would not suggest using this company

My wife's friend at HECO was very pleased with their new solar water heating system installed just…read morethis week. I took that as my cue to get our own solar heater system addressed that has not been working for months. My expectation was low as I didn't even get a call or messages back from a few other solar companies, including the one who did our installation! Sean replied to me that same day and arrived from across the island in an hour. He made the necessary repair and I had scorching solar heated water same day within a few hours of my inquiry. I wouldn't hesiate to recommend Sean and Island Solar to anyone who needs help with their current or new solar project. Very pleased.

We had a problem with very little hot water. Peter said to reset the thermostat. Saw their video on…read moretheir website on how to reset. Now we have hot water! Appreciate the fix. All done over the phone! No charge! Definitely will use them again.!

As luck would have it, my previous updated review of Ecosolar would not be my last…read more After converting my system from running off of Sunpower/Enphase's microinverters to Tesla's inverter from my new Powerwall Plus, I had some worry about what might happen with a single point of failure. Midway through summer, I found that out when my entire system went down when it failed. I reached out to Chris from Ecosolar right away and let him know that I was having a problem and he started troubleshooting immediately. After some investigation it was determined that the inverter had to be replaced and after waiting for Tesla to ship out the part, it was replaced in a timely manner. I was back up and running again, until December when my system started acting up again, this time seemingly having a problem with one of the batteries. I contacted Chris again and let him know that I was having a problem again, and although communication was rough with the end of the year approaching and federal tax credits expiring, I had a service appointment scheduled for the first week of January. On their site visit, it was determined that my new Powerwall Plus itself had gone bad. They were able to start the RMA process with Tesla and told me it would be replaced, possibly with a new Powerwall 3, because the Powerwall 2 was end-of-life and not in production anymore. That meant they would also have to replace my original Powerwall 2 as well with a new Powerwall 3 expansion pack. They hoped optimistically that I wouldn't have to wait too long for the replacement. Fast forward to April and it did take longer than expected for Tesla to send them the replacements but the good news was that Tesla did indeed replace both of my Powerwall 2 units with a new Powerwall 3 and expansion. This did require much more work on the part of Ecosolar to retrofit than just unplugging the old setup and swapping in the new one, for my particular case, and I appreciate the extra lengths they had to go through versus just having to swap out the old if Tesla had just sent a Powerwall Plus replacement instead. I had been down for a few months but the upside is that I have a brand new set of batteries now in 2026. I would say my solar journey has been rougher than I expected it to be. Parts have failed. Parts have been replaced under warranty. Yes, I've experienced periods of time where my PV system has been offline due to failures, and had to deal with big HECO bills until those failures were resolved. I've had two Powerwalls replaced under warranty in the last 7 years (technically 3 since they swapped my still working Powerwall 2 with a new expansion pack), and an inverter. I had problems with weird glitches with power that kept tripping the Powerwall into thinking that I was experiencing a power outage, that Ecosolar's technician helped to diagnose and find out was actually a problem with HECO's underground service feed into my home (which was another years long adventure with HECO altogether). Sunpower's PV control system got booted offline and needed to be reset remotely. Each time I've had a problem I've contacted Ecosolar and each time they've addressed it to the best of their ability. Yes sometimes it takes time to get things resolved, and it can be hard to be patient. Tesla seems to take awhile to get things sent here but they have always come through thus far too. My additional cost for all of their warranty work and service over all this time has been ZERO. Every single problem I've ever had has been addressed. It's great if you can invest in something like this and never have a problem, but I understand that things happen when you're dealing with new technology, and it sucks but sh*t happens. But when you do invest in something as expensive as solar, it's good to know that I've invested with a company that takes care of it's customers.

Just wanted to give an updated shout out to Chris Osaki and Michael French of Eco Solar…read more Specifically, what you can expect AFTER installation, even years later, in terms of system support. We had an issue arise late one evening multiple years after our system was installed. Instinctively, we reached out to Chris & Michael after contacting HECO and began getting calls/texts back from them around 7am the next morning. They connected us with industry professionals who got out to our house and resolved the issue the SAME day. We were worried we'd be without service/a fully working system possibly for multiple days, as you often hear about with other outfits. Not Eco Solar--they provide support and info well after purchase/installation. MAHALO!!!

I've had a Haleakala PV system since 2013. This year I decided to add a Battery Bonus system, and I…read moregot estimates from a number of companies, and once again chose Haleakala solar with a Tesla Powerwall. The sales person seemed pretty knowledgeable about both the product and the various options including Battery Bonus. He did a site survey, and confirmed my new equipment would fit into my desired enclosure. After paying my deposit, I received an initial design plan from them. I wanted to make some changes to the plan, which they quickly accommodated. They also submitted the plans electronically to DPP, and filled out and submitted the paperwork to HECO on my behalf. Couldn't have been easier, and took about 4 weeks. The coordinator sent a very complete outline of the various steps in the process, and an estimated time frame to complete them, so there was no surprises. My original panels had developed a squeak after many years of high winds; Haleakala came out and repaired the issue, including finding and fixing a crack in my Munir tile. My install was 2 weeks ago. The first day, they installed 9 new PV panels. The second day, they completed putting in the wiring and the new Tesla battery and gateway. About a week later, they returned to provision the entire system, which is operating now. Next step will be inspection and permit approval. I'm very happy with the sales process, design process, and installation so far. I have every reason to believe that they will handle the rest of the process shortly subject to when the inspector is available. My only issue to date has been that one of the circuit breakers they installed tripped the evening after the install. They ended up sending out a tech after hours to show me how to get back online, and then came back to address the issue permanently during the next appointment.

I submitted two online service requests regarding an issue with our Tesla battery not charging. The…read morefirst request was submitted on September 12, and I received a text message stating that someone would respond within 72 hours. Unfortunately, I did not receive any follow-up. Fortunately, the issue with our battery resolved itself. However, a phone call from Haleakala Solar would have been appreciated to acknowledge the request and offer support. I submitted a second request for a call on September 16 and again received a message promising a response within 72 hours. Once more, no one contacted me. This lack of customer service has been a reoccurring issue with Haleakala Solar. When we first installed our PV system six years ago we had issues with our solar water heater. Getting someone to answer and respond to our calls was very difficult. We finally received service when my husband drove over to their warehouse to talk to someone there.

We had a great experience working with Julian and the Solartech team here on Oahu. From the start…read moreJulian didn't come across as a typical sales rep at all -- he felt more like a knowledgeable industry expert who offered thoughtful, objective opinions about different technologies and brands. Before meeting him, I spoke with two other solar companies. One rep came on extremely strong and the meeting felt very sales-driven and impersonal, which made it hard to trust the information being presented. The other rep seemed to still be in training and had to run nearly every question through a senior colleague. Working with Julian was a relief. He's clearly experienced and communicates in a smart, casual, and very approachable way. We also had a great experience with Jelly and Brandi from the Solartech administrative team--they were easy to work with and helped keep everything moving smoothly. Solartech's digital quote platform made comparing options and selecting our plan simple and easy to understand. We ultimately decided against Tesla batteries after learning about potential overheating issues, which can be a concern in a place as hot as Hawaii. We went with Enphase we're happy with our choice. The installation team was excellent as well. Nainoa, the lead electrician on our project, is a total pro--easy to talk to, great at problem-solving, and he helped us quickly figure out a battery placement challenge. He completed the electrical work in just a few hours. During the panel installation, the crew accidentally drilled through part of our roof which caused a small leak, but they responded immediately and repaired it right away. Everything was patched up and looks good as new. We really appreciated how quickly they addressed the situation. Post-purchase support has been just as strong. I had some questions about how our system was pulling power from the grid, and Julian took the time to explain everything. It turned out to be more of a settings preference than an issue. He followed up with helpful explainer videos and even called a week later to make sure everything made sense. Overall, we're very happy with the experience and appreciate the professionalism, transparency, and support from the whole Solartech team.

Update: Confirmed; they no longer support the products they sold just 5 years ago. Not a warranty…read morework issue--they lost their certification to do the work, or let it lapse. Junk product from a junk company. Original: SolarTech Hawaii does not support the equipment they install. Do not recommend; as other reviews have mentioned the poor support after sale is unacceptable.