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APsystems offers advanced, powerful solar microinverter technology for residential and commercial systems. The APsystems solar solution combines highly efficient power inversion with a user-friendly monitoring interface to bring you reliable, intelligent energy. Our proprietary system architecture increases solar harvest and ensures maximum output for solar arrays, and we continue to develop new technologies and products for the marketplace.
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APsystems is the #1 global multi-platform MLPE solution provider, offering microinverter, energy storage and rapid shutdown devices for the global solar PV industry. APsystems microinverters are intelligent, innovative, and the best-selling multi-module microinverters in the world.

Founded in Silicon Valley in 2010, APsystems encompasses 4 global business units serving customers in over 100 countries. With millions of units sold producing more than 3TWh of clean, renewable energy, APsystems continues to be a leader in the ever-growing solar MLPE segment.
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Industry Certifications

  • North American Board of Certified Energy Practitioners
  • Solar Energy Industries Association
  • Solar Washington

What Customers Are Saying

17 reviews
Average Rating 17 review(s)
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this company doesn't seem to be in operation

Have had a part on order for months - zero update, no way to reach anyone at the company. Are they still in business?

Posted by lorainemcvey on May 24, 2023
DS3 & ECU-C Nov 2022 install.

Have 15 of the DS3 installed with the ECU-C. System has been running good so far with good production capacity. Zigbee communications for a few has had intermittent comms failure but was reestablished by the next comms interval. Highest temperatures recorded up to 96C with drop in performance from about 90C upwards. Inverters have been able to hit full 440 watts per channel due to a high DC/AC ratio. The ECU-C with the CT is great for monitoring both production and consumption. ECU-C currently using wifi but will changed to wired once I have the cat6 pulled. Will update if any problem crops up. System: 18 kWp Risen Titan 600W 15 units DS3 880 VA Update 15 Nov 2022 One inverter died and had to be replaced. Then the replacement inverter died. Exact same MO as the first. Seems like an overheat issue or a failure to throttle adequately to prevent overheating. Inverters hit 90C+. The other 14 were fine and throttled once temperatures hit 90C. Not sure if these were designed to be operating at these temperatures as most electronics limits is 85C. Installer will replace but not sure why this is happening. 2 units in a row is grounds to buy lottery. Overall the system as a whole performed quite well and being microinverters, continued producing energy even with the problem units. Update: 13th Dec 2022 3rd unit has died. All on the same phase. APS asked installer to replace. While I am very happy with the manufacturer's no questioned asked after sales service, having 3 units fail is daunting. I understand there will be teething issues from the mass manufacture of these inverters and the difficulty of QC across large installations, I hope the product development can be improved. Still, I am still happy I went with the microinverter rather than string/optimiser install because even with the down inverters, my system is still running with a loss of 880w from a 13kw system. The price difference between APS and Enphase is just too much and the excellent after sales makes up for the less than immaculate product quality. Im confident sooner or later they will sort out this issue. Installer has made appointment to replace next week. Update: 15th March 2023. One month has past since the replacement and everything is working great. Installer had to shift one row of cells up and change the position of the location to the bottom rail because the heat from the panels were affecting the cooling. Moving the inverters to the bottom rail with a gap between the panels allowed the inverter to access cooler air. Careful placement and spacing between the panel rows is critical in hot and humid countries with tin roof. All said and done, all the inverters are now working flawlessly. Update: 23/03/23 Another just died. QC of these inverters are questionable. APS support is great though. I am in a hot and humid climate.

Posted by mddavidcheok on Nov 04, 2022
High Failure rate, poor support

High failure rate for the micro-inverters. Monitoring system is buggy. No phone support available in North America. Email support is no helpful - mostly just deny there is a problem.

Posted by robert on Mar 09, 2023
They've fixed up

The inverters were having issues in the past, but it seems they've fixe up all the issues that were existing. Great conversion value on energy, and clients are happy with the system and inverters.

Posted by jillle408408 on Mar 06, 2023
on the right track

Making all the right moves to improve their product line. I have used and sold many solar kits with APSystems and have had a great experience with them. They require half the equipment as other brands since you can get 2 panels per micro inverter and anytime I have spoken with their support reps, it's been a pleasant experience. Would recommend!

Posted by alexdsmith15 on Sep 30, 2022
Immediate Faulty Inverters

When we first installed your micros in 2019 we immediately had one faulty microinverter. We reported the micro to you all and you sent us an RMA. A few months after we installed the RMA 6 more micro inverters went out. I reported the issue to your technical service department and they indicated it was either and AC or DC issue. We went on the roof, took measurements and submitted photos as proof that is was not a wiring or breaker issue. We did this on THREE separate occasions because AP Systems wanted to be sure it wasn't an RMA issue. Please understand it takes time and resources to deploy and team, uninstall panels then reinstall panels. Finally, last month (March 2022) AP Systems sent six new RMA micros. We installed the micros and system is working properly. Upon the most recent install it was the FOURTH time we had to get on the roof and deinstall and reinstall the panels. Not to mention the customer has had less than half of their system working for over a year. My question is do we get reimbursed by AP Systems for all of the unnecessary work that we had to perform due to receiving faulty micros? Does the customer get any type of reimbursement for having to pay a higher utility bill than expected, stretching out their assumed payback period because I installed faulty microinverters? I’ve reached out to everyone with no response. So I had to leave a public comment. I really hate doing this.

Posted by aaron on Jun 10, 2022
    • Residential
    • Solar PV
    • 13.3 kW
    PIEMAR 330W with APSystems YC600
    • Multi-Family Residence
    • Solar PV
    • 72 kW
    Harris Court / Habitat for Humanity
    • Residential
    • Solar PV
    • 29 kW
    The Lowen family’s Coldstream Corner Farms net-zero project
    • Multi-Family Residence
    • Energy Efficiency
    • 72.5 kW
    Clay Street Homes, San Antonio



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