Solar Inverter Buyer’s Guide 2022

Solar Builder Inverter Buyer's Guide

The 2023 Inverter Buyer’s Guide is now available

The 2022 Solar Inverter Buyer’s Guide shows an incredible number of options to meet any project needs. Microinverters that can handle 880 Watts or enter a grid-forming mode to power a home in an outage with just PV. String inverters with more energy storage versatility and better roundtrip efficiencies. There’s a lot to digest below, so before we get to what’s new from 15 manufacturers, here is some advice on what to look for in an inverter spec sheet.

The 2023 Inverter Buyer’s Guide is now available

“A key part of an inverter spec sheet is which MLPE the inverter is compatible and certified with for Rapid Shutdown (PVRSS). It is important to identify the certified components prior to installation in the field to ensure NEC compliance. Not all inverters and rapid shutdown system pairings meet the 30V in 30 seconds requirement.” – Sarah Ozga, Product Manager, Tigo Energy

“Pay close attention to the number of units per branch. Fewer units means improved reliability by reducing potential points of failure, but also means fewer units for installers to purchase, stock and install. Also, compare the MPPT voltage range. A wide peak power tracking voltage means a microinverter can turn on earlier and stay on later.” – Jason Higginson, APsystems

“For microinverters, the actual expected AC power output and elimination of power ‘clipping’. With modern microinverters, it is unnecessary to tolerate any clipping with new higher Wattage PV modules. The industry norm has been lazy on this topic – it’s possible to eliminate clipping and stop wasting energy harvest and kWh.” – Ed Heacox, CEO, NEP

“While not explicitly mentioned on a datasheet, the number of hardware components an inverter requires is a spec that installers should pay close attention to. Modern string inverters, for example, have many integrated features such as software-based shade mitigation, multiple Maximum Power Point trackers (MPPT), and monitoring. This integration reduces the number of components in a system compared to technologies that require microinverters or DC optimizers on each solar module. The reduction in the number of components decreases the costs for hardware and labor and makes a system safer and more reliable because this system has much fewer potential points of failure, e.g., DC connectors.” – Richard Baldinger, Fronius

“Inverter spec sheets are reflective of an increasingly homogenous data set that doesn’t always reveal the short and long-term impacts system owners and installers can expect. In fact, we feel that the most important considerations are those not found within the confines of a traditional data sheet. Installers should pay attention to the longevity of a company, how their products are manufactured and what quality assurance measures are taken to ensure long-term, trouble-free performance. Risk reduction is critical in maximizing system performance, and a data sheet is just one piece of information that installers should evaluate when selecting an inverter.” – Brad Dore, SMA

“For off-grid inverters, two key specs and one key feature are often overlooked: 1) DC operating voltage is a common shortcoming, since off-grid voltage and battery swings are wide; 2) Self-consumption is important, since it affects system efficiency; 3) Fanless design is something to look for, since many inverters require cooling fans and they are sometimes the weakest link. Fans consumer power and represent a parasitic load (degrading efficiency). They have moving parts and can (and often do) fail. And they can shorten the inverter’s live because they pull in dust, dirt and debris” – Bill Mellema, Product Director, Morningstar Corporation

The 2023 Inverter Buyer’s Guide is now available


What’s new? GoodWe A-ES Hybrid inverters are in stock and ready for delivery. The GoodWe A-ES hybrid inverters are also available via GE as the GE Solar Inverter.

A-ES 01

The 5-9.6-kW, single-phase A-ES is one of the only hybrid inverter on the market with 4 MPPTs. With UPS-level switching, the inverter can switch to backup in less than 10 milliseconds in case of power outage. This ensures household appliances are not compromised.

  • 4 MPPTs, 50% DC oversizing
  • AFCI & Rapid Shutdown
  • UPS-level switching
  • Smart Meter integrated
  • Optional AC bypass switch

What’s new? APsystems has launched the new DS3 microinverter series, designed to accommodate today’s high-capacity PV modules and create a strong competitive advantage for installers. The DS3 series covers a wide variety of PV module types and sizes, installs faster and is the most powerful dual microinverter in the world. Fewer units on the roof, and fewer PV modules required for the same output as competing systems, puts more money in installers pockets. The DS3 means the maximum solar power output for homeowners and higher profits for solar installers.

apsystems QT2

The QT2 is a 3-Phase microinverter for C&I applications. Each QT2 connects to up to 4 PV modules, is rapid shutdown and UL 1741 SB (CA Rule 21) compliant and comes in 1728W (208V) and 1800W (480V) output models. Why microinverters in commercial solar? As featured in the recent Solar Builder article “Making the case for microinverters in C&I solar,” the QT2 offers built-in rapid shutdown, pairing with higher capacity PV modules, improved performance over string inverters under a variety of conditions, fewer potential points of failure, plug-and-play three-phase wiring, and bonus: microinverters are now more cost-effective than ever!


  • 208V and 480V models, wye and delta 3-Phase.
  • True 3-Phase in the cable, no need to balance phases manually.
  • Pairs with 4 PV modules 500-600W+ (dep. on your preferred AC/DC ratio).
  • Inherently Rapid Shutdown compliant, no separate RSD system required.
  • Reduces potential points of failure (PPoF) by 75% over competing solutions.


The APstorage solution is a battery agnostic AC-coupled solution. Installers can choose from a variety of compatible low-voltage batteries. It can be used as a partial backup home system upon grid outage, allow homeowners to operate in self-consumption to limit grid usage, or to take advantage of time of use rates to offset electricity costs.

Because it is AC-coupled, batteries can be charged from any grid-tied solar inverter. During a grid outage, DS3s can be to charge the batteries.

Key specs:

  • kW range: 5000VA, 7500VA surge for 10 seconds.
  • Operating voltage range: 240VAC nominal output, 211-264V.
  • Max / CEC efficiency: 97%
  • DC Battery Input Voltage: 40-60VDC.

UL listings: UL1741SB, UL 9540


What’s new? Chint Power Systems America is introducing its 250/275kW, 1500Vdc three-phase string inverters for North America. These high-power inverters are designed for ground mount and utility-scale applications. Available with either 36 fused or 24 unfused PV string inputs and 12 MPPTs. At Intersolar, CPS showcases these as part of a new Inverter Cluster, which combines three 275-kW inverters with one 800Vac Fused Disconnect, simplifying installation, and providing a cost-effective mounting solution.

CPS 36kW V2 String Inverter

The new, V2 version of the 36kW (36kVA) CPS three-phase string inverter is designed for rooftop and carport applications. The units are high performance, advanced and reliable inverters designed specifically for the North American environment and grid. High efficiency at 98.8% peak and 97.4% CEC, wide operating voltages, broad temperature ranges and a NEMA Type 4X enclosure enable this inverter platform to operate at high performance across many applications.  CPS 36KTL V2 ships with either the Standard wire-box or the Rapid Shutdown wire-box, each fully integrated and separable with touch-safe fusing, monitoring, and AC and DC disconnect switches. The integrated PLC transmitter in the Rapid Shutdown Wire-box enables PVRSS certified module-level rapid shutdown when used with APS RSD-S-PLC/RSD-D products. The CPS FlexOM Gateway enables monitoring, controls and remote product upgrades.

The CPS SCA36KTL-DO-US-480-V2 is currently UL 1741-SB listed and is expected to receive UL 3741 listing with IronRidge, Sollega, Panelclaw, and Unirac by Q2 2023.

  • Separable wire-box for simplified O&M and fast service
  • 3 MPPTs with 5 inputs per MPPT
  • Optional FlexOM Gateway enables remote firmware upgrades
  • Standard and integrated RSD wire-box options
  • Copper- and Aluminum-compatible AC connections

The CPS 25kW-208V three phase string inverters are designed and optimized for rooftop and carport applications with 208Vac service voltages. The CPS 25kW product ships with the Rapid Shutdown wire-box, fully integrated and separable with touch safe fusing, monitoring, and AC and DC disconnect switches. The integrated PLC transmitter in the Rapid Shutdown wire-box enables PVRSS certified module-level rapid shutdown when used with the TIGO, APS, and NEP products. The CPS Flex Gateway enables monitoring, controls and remote product upgrades.

  • 208V AC output
  • 3 MPPTs with 2 inputs each for maximum flexibility
  • Integrated RSD wire-box options with TIGO, APS, and NEP
  • NEC 2017/2020 compliant and UL listed Arc-Fault protection
  • Separable wire-box design for fast service

What’s new? Darfon Solar will be launching its new out-door rated energy storage solution. The H7 is a hybrid inverter and the B17 LFP battery. The H7 can support loads of up to 7.6kW. The H7 can also be both AC-coupled and DC-coupled at the same time, so more solar panels can easily be added to an existing system. The B17 is a 17.5kWh high-voltage LFP battery. The high voltage design increases the conversion efficiency, lowers the current, and reduces the cable thickness.


The H7 hybrid inverter is sold with the B17 LFP battery. Since they are both out-door rated, they can be installed outdoors for easy access. Since Darfon makes both the inverter and battery, we can gather data to monitor and troubleshoot both products. The H7 comes with an external wireless display to control and see the current status of the system from inside the home. Like out previous hybrid inverters, the H7 is transformerless and has breakers, disconnect switches and generator support circuitry.

  • Support loads of up to 7.6kW
  • Grid input and output can be as much as 9.6kW
  • Up to 12kW of PV with 4 MPPT when DC-coupled or 7.6kW when AC-coupled
  • To be installed with the B17, a high-voltage LFP battery
  • It only weighs 86.8lb, so it can be easily mounted and installed.

H5001_DoorOpened (1)

Darfon’s H5001 hybrid inverter can be used as a string inverter. Why is this useful? A hybrid inverter is more than double the cost of a string inverter. But if you look at the system cost, the inverter is only a small portion of that cost. The batteries are the most expensive component in hybrid system. In some cases, the additional cost of the batteries is what people cannot afford. So, it makes sense to install the H5001 as a string inverter and have a system that is energy storage ready. Then the batteries can be purchased and installed down the road. The thing that installers like about the H5001, is that it is straight forward to install and configure.

  • PV Operation Voltage Range 120 to 500VDC
  • Two MPPTs
  • Output to Grid: 5000W, Output to Load: 5500W
  • SGIP Compliant
  • Compatible with various battery chemistries
Enphase Energy logo

What’s new? Enphase recently started shipping the IQ8 Microinverter, its smartest microinverter yet. This is the industry’s first grid-forming microinverter, offering homeowners the first-ever sunlight backup configuration that functions even during grid disruptions, with or without batteries. For homeowners who want a battery, there are no sizing restrictions on pairing an Enphase IQ Battery with an IQ8 solar system. Looking ahead, Enphase is planning to launch an all-in-one product that will deliver specialized solutions for the small commercial and industrial space, offering many of the same benefits as residential and further supporting installers looking to expand their business.

IQ8 Microinverter

IQ8 Microinverters are UL Listed as PV Rapid Shut Down Equipment and have more than 1 million cumulative hours of power-on testing. IQ8 also unlocks new backup power opportunities for customers and sales avenues for installers. In addition to providing sunlight backup for the first time ever, typical storage sizing and ratio restrictions no longer apply with IQ8. Installers can add a range of battery sizes to customers’ homes and expand their systems over time as needed.

  • Grid-forming microinverter with proprietary microchip makes sunlight backup possible for the first time and eliminates constraints on battery sizing for home energy systems;
  • Split-phase power conversion capability efficiently converts DC power to AC power;
  • Included Q-DCC-2 adapter cable with MC4 connectors supports quick PV module connections;
  • Warranty of up to 25 years;
  • UL Listed as PV Rapid Shut Down Equipment.

Enphase IQ8P-3P

The IQ8 Commercial Microinverters are built to support the small commercial solar industry by simplifying the design and installation process, improving energy harvest with higher uptime, expanding system monitoring capabilities compared to similar solutions, and offering industry-leading safety through an alternating current (AC)-based system using low-voltage power. The microinverters are compatible with a wide range of solar panels including 54, 60, 66, 72, and 144 cell panels with full or split cell, and with a range of 380 W to 640 W, making the products viable to support projects now and in the future. The distributed architecture of the Enphase system makes designing projects more seamless by reducing complexity and enabling an optimized panel layout for maximum energy harvesting on crowded or shaded small commercial rooftops. All IQ8 Microinverters activated in the United States and Canada, and a 12-year warranty for products activated in Mexico.

Key specs:

  • kW range: 380-640 W
  • Operating voltage range: 16 - 63
  • of MPPTs / MPPT voltage range: 35.5–53
  • Max / CEC efficiency: 5%

UL listings: Meets CA Rule 21 (UL 1741-SA) and IEEE 1547 (UL 1741-SB) requirements

enphase IQ8HC

With peak output AC power of 384W, IQ8HC, and IQ8X Microinverters are designed to seamlessly pair with a full range of solar modules up to 540W DC. IQ8HC Microinverters are available for all of North America and can manage a continuous DC current of 14 amperes, supporting higher-powered solar modules through increased energy harvesting. IQ8X Microinverters are available in the United States, supporting solar modules with higher output DC voltage and cell counts, such as 96 cells, 80 half-cut cells, and 88 half-cut cells. The high-quality manufacturing process and low failure rates unlock an industry-leading 25-year warranty for all IQ8 Microinverters activated in the United States and Canada, and a 12-year warranty for products activated in Mexico.


  • kW range: 320 - 540 W
  • Operating voltage range: 18 – 58 V
  • of MPPTs / MPPT voltage range: 29.5–45
  • Max / CEC efficiency: 0



  • kW range: 320–540 W
  • Operating voltage range: 25–79.5
  • of MPPTs / MPPT voltage range: 43–60
  • Max / CEC efficiency: 5

UL listings: Meets CA Rule 21 (UL 1741-SA) and IEEE 1547 (UL 1741-SB) requirements


What’s new? In 2022, Fronius will launch various software tools that support solar installation companies, from planning a system to installing and monitoring it afterward. A new system design tool will help engineers configure new systems quickly and streamline their project management. In addition, Fronius will enrich its online monitoring platform Solar.web with new features for solar businesses.

Fronisu Symo

Size / category: 10.0 kW – 24.0 kW  /   Commercial

The Fronius Symo Advanced inverter line features six models ranging from 10 kW to 24 kW, ideal for commercial and industrial applications. The Symo Advanced is lightweight and combines high-power density with flexibility to ensure the fastest possible installation for your PV project. The small number of total power conversion electronics adds to the high serviceability from any mounting spot. You get total system granularity with only a low number of system components.  Developed with 2 Multiple Power Point Trackers and Dynamic Peak Manager, our shade mitigation solution, the Fronius Symo Advanced ensures your PV system operates at maximum performance and efficiency.

UL 3741 listed? Yes, with use of Unirac, IronRidge, PanelClaw, Schletter and AeroCompact flat roof mounting systems

Key specs

  1. 208V AC and 480 AC versions available
  2. Smart shade mitigation with Dynamic Peak Manager
  3. SuperFlex Design for complex roofs and maximum design flexibility
  4. SunSpec transmitter for Module Level Rapid Shutdown integrated
  5. Truly field-serviceable

What’s new? Generac’s PWRcell Inverter works seamlessly with the full PWRcell product ecosystem, including the recently launched PWRmanager and PWRgenerator. Upcoming firmware updates allowing AC Coupled PV and Generator Integration will also be compatible with the same great PWRcell Inverter you’re used to. Strategic firmware updates throughout the past years like these have continued to polish the PWRcell System as a comprehensive clean energy management solution. To further round out the Generac menu, the company will be debuting its PWRmicro later this year.

morningstar logo

What’s new? Morningstar is introducing a line of small inverters for industrial and other off-grid applications.  The SureSine pure sine wave inverter line debuts at InterSolar Europe this May, initially with 6 models, from 150-2500 Watts in both North American 120V and International 230V versions.  Models support combinations of 12/24/48V batteries.

SureSine Inverters no logos

SureSines are the polar opposite of “me too” thinking, designed for the “mission-critical” industrial applications so important to Morningstar  customers. Six models, from 150 to 2500 Watts in both North American 120V and International 230V versions.  Models support combinations of 12/24/48V batteries. The range covers off-grid industrial systems in diverse applications such as rural development, telecommunications and wireless service providers, oil & gas, and more. They have superior thermal performance with fanless design for higher reliability– for example, the 300W model doesn’t derate until 45 C and delivers 200W at 60 C. System-level integration and communication with Morningstar charge controllers. Multiple AC hardwire remote terminal options on selected models. UL 1741 listed, and also IEC-62109-1, IEC 62109-2, and CE/UKCA compliant.

  • Power Surge capability at 40 C (under 5 seconds) is twice the rated output power
  • Operating temperature range is -40 C to +60 C
  • Peak efficiency ranges from 89-92%, depending on the model
  • Fanless design—no fans to fail for greater reliability and efficiency
  • Full protections built-in
  • Industry leading safety and low noise
  • Status LEDs notify system alerts and ensure reliable operation
  • Bluetooth Android and iOS  mobile apps
  • Adjustable Low Voltage disconnect (LVD)

What’s new? NEP expanded its microinveter line up to include the EQ-800, a 2x400Wac dual microinverter with Rule 21 certifications. The company also refined its Rapid Shutdown solutions focusing on single and dual module devices with two-way data communications for enhanced safety and service efficiency.

NEP NEPTUNE three-phase

NEP added NEPTUNE 3-phase inverters to go with its RSD solutions. These inverters include fully integrated transmitters and provision for NEP gateway to be installed inside the inverter wire-boxes. Just one gateway is needed to support numerous inverters (wifi, Ethernet and cellular internet connectivity). 5 models; 30kW-208Vac and 33,50,75,100kW-480Vac.


The BDM series involves nimble engineering, better service execution and easier positioning. Fill voids and gaps of content incumbents to generate customer focused value. A key attribute is its metal exterior, which avoids the more common failures associated with plastic module-level power electronics on hot roofs.

NEP microinverter PVG-2-RSD

NEP’s unique, two-way data communication Rapid Shutdown solution enables installer confidence that rapid shutdown is functioning correctly. This is valuable for safety assurance, code compliance, AHJ approval and characterization of the array performance upon commissioning. Further, NEP includes IV Curve trace ‘service mode’ to enable easier measurements at time of commissioning and through the life of the project. NEP’s optional data gateway is available for remote PV panel diagnostics and data performance.

  • PVG-1 and PVG-2 for single and dual PV panels
  • Mounting for racking rail and optional clip available for PV module frame mount
  • Two way data flow for safety and performance with optional NEP gateway
  • Transmitters available in stand-along enclosure and integrated with leading C&I inverters providers

NEP's Rapid Shutdown units are 20Amp models. The PVG-2 (dual PV) and PVG-3 (3 PV modules) are built with a metal enclosure. Why metal? The industry has seen numerous examples of RSD reliability issues with Non-NEP units. To reduce the risk of such, a metal enclosure improves heat dissipation and overall thermal management. Also, a metal enclosure is more robust, ‘fail-safe’ engineering investment to lower overall risk and improve the expected life-span of the devices. These same units are tested to 25Amp in Europe (CE marking). Lots of design margin with this improvement.

SMA America

What’s new? PV with integrated storage continues to dominate discussions in large-scale applications. Utilities are investing in storage in a meaningful way and preparing for an increasingly large demand from electric vehicles. They are also increasingly looking at owning and operating distributed assets for improved control. SMA’s investment in its storage technology has been apparent with new offerings in the utility, commercial, and residential spaces in the works. Beyond storage, a disruptive new method for addressing compliance with rooftop shutdown requirements is here. We will see the first certifications to UL3741 as a method to shutdown within an array boundary. This certification will provide commercial and residential integrators with maximum safety, while reducing fire risk, improving system reliability, while doing so at a significant cost savings.


The Sunny Tripower CORE1 is the only inverter that offers an intelligent IV curve diagnostic, advanced string monitoring, and SMA Smart Connected. The world’s first free-standing PV inverter for commercial rooftops, carports, ground mount and repowering legacy solar projects, the Sunny Tripower CORE1 enables logistical, material, labor, and service cost reductions, and is the most versatile, cost-effective commercial solution available.

  • First commercial system listed to standard UL 3741 PV Hazard Control for NEC 690.12 compliance
  • System visibility with intelligent IV curve diagnostic and advanced string monitoring
  • Integrated SunSpec PLC signal for module-level rapid shutdown compliance to 2017 NEC
  • ShadeFix optimization generates more power
  • SMA Smart Connected, Sunny Portal, and SMA’s Online Service Center provide automatic, proactive, and unmatched service support

SMA Tripower X

The Sunny Tripower X is the latest in commercial solar energy generation and the new centerpiece of the proven SMA Commercial Energy Solution. As a comprehensive solution, the integrated System Manager enables complete energy management from one platform while combining state-of-the-art technology into one device. This single-source design ensures small to medium-sized businesses can accommodate future energy management and needs.

  • High flexibility in system design with 3 MPP trackers
  • Easier installation with an overall lighter weight and wall-or-rack mount
  • Flexible and scalable system sizing: 30 kW, 25 kW & 20 kW
  • Integrated System Manager allows monitoring and control of up to 5 inverters (with up to 150 kVA) and 1 energy meter
  • SMA ShadeFix offers next level performance optimization

UL listings: UL 62109-1, UL 1699B Ed. 1, CAN/CSA 22.2 No. 62109-1:16 / 62109-2:16, PV Rapid Shutdown System Equipment in accordance with UL1741:2021

SMA Tripower PEAK3

The SMA Sunny Highpower PEAK3-US-21 lineup of 1500VDC inverters has been robustly built to last 25+ years and yield full nameplate output under intense operating conditions, such as high ambient temperatures and high DC:AC ratios.  This makes the SHP PEAK3-US-21 inverter ideal for distributed generation ground mounts and large carports, Community Solar, Floating PV, Agri-voltaics projects and more.  Notably, the SHP PEAK3-FLEX-US-21, with its adjustable AC voltage, power and current, is an excellent candidate to Repower failing inverters and breathe new life into older sites.

kW range:

  • SHP PEAK3 125 kW @480VAC
  • SHP PEAK3 150 kW @600VAC
  • SHP PEAK3 165 kW @630VAC
  • SHP PEAK3 172 kW @660VAC
  • SHP PEAK3 FLEX (52-172kva) @200-660VAC
    • Repower Solution for 600-1500VDC systems

(DC) Operating voltage range: 298-1500VDC, dependent on AC Voltage and Power class

No. of MPPTs / (Rated) MPPT voltage range:

  • Single MPPT (bifacial module friendly)
  • 705-1450VDC, dependent on AC Voltage and Power class

Max / CEC efficiency: 99.0%

DC:AC Design Ratios: 200%+ and up to 3000 full load hours

Full power up to 52C (125F)

25-year extendable warranty

UL listings: UL1741SB, IEEE 1547:2018, UL 1741-SA - CA Rule 21, HECO Rule 14H, UL 62109, UL 1998, CAN/CSA-C22.2 No.62109

For more info:


What’s new? Schneider Electric’s upcoming offerings make managing whole home and partial home backup easy. Schneider Electric recently launched a new InsightCloud user interface and made updates to the InsightMobile app that will make managing solar and storage systems easier. InsightCloud features a clean UI with improved navigation, a new multi-site overview, and site comparison that allows for a more insightful experience. As part of the InsightMobile update, solar professionals now have even further control over how the site is configured. With the app, you can now edit the site, scan the MAC address and serial number as you configure a site.

Schneider Inverter

Get more power out of your solar panels with Schneider Inverter’s integrated optimizers. With 4 independent channels, systems are efficient, easier to install, and support complex PV arrays with multiple orientations. For home battery systems, the Inverter pairs with the Boost battery. The compatible Pulse electrical panel can be used to intelligently control what appliances use the battery power during a grid outage. This can extend the battery runtime up to 80% while maintaining flexibility for the homeowner to choose what to power on the fly. The inverter’s 200% surge capability means higher reliability backup power by better handling the initial surge of electricity that many appliances require when starting. The solar and battery systems can operate with dc or ac-coupled solar, and are compatible with generators for extended backup. Schneider’s 200 Amp rated Backup Controller is available in multiple configurations for easier installations and fewer boxes on the wall. Schneider Inverter will be available in H2 2023.

  • 7 kW continuous backup power, 15.4 kW peak output power (10 sec)
  • Easy installation and commissioning experience
  • Easy integration with load control and management
  • Flexible battery capacity with 10 to 30 kWh per inverter, or install as a battery-ready solar power system
  • Rated for Indoor or Outdoor installations



The XW Pro leads Schneider Electric Solar’s hybrid inverter range, as it provides installers with the flexibility to design and install a complete solar and storage system. The XW Pro offers a high overload power rating of 1.75x with the ability to stack up to 4 inverter units to increase overall power output. Because of its scalable and adaptable infrastructure, the XW Pro can also be integrated with lithium-ion batteries for solar and storage, or backup power systems without solar. Schneider Electric’s solar hybrid inverters come with a complete ecosystem of accessories to enable efficient installation. This includes integration with MPPT charge controllers and Insight Energy Management, Schneider Electric’s energy management software that allows solar professionals to remotely manage multiple installation sites with ease.

  • Reliable performance with a 6.8 kW output with up to 12 kW peak overload
  • Flexibility in installations and operations with Stacking capability of up to 4 units in single-phase or 6 units in 3-phase
  • Compatibility with a wide range of battery technologies, including Lithium-ion battery integration
  • Optional integration with generator
  • Compatible for use across a wide range of applications such as grid-tied, off-grid, self-consumption, backup power

What’s new? Sol-Ark is launching several new product families and extending its proven inverter line this year. With a strong reputation for best-in-class technology, the Sol-Ark team has steadily advanced by adding real value to home and business owners’ pursuit of energy independence and resilience.


Sol-Ark’s 15K-2P (UL# Limitless 15K-LV) is so powerful that it eliminates standby generators, a 200A whole home transfer switch (built in), UPS’s for electronics due to 5ms switching, Neutral Forming Transformer due to split phase output, and parallel stacking because only one is needed. Sol-Ark also sells smaller units (12K-2P, 8K-2P, 5K-1P) for critical loads, off grid, and mobile applications. Features and benefits include parallel stacking, grid sell, meter zero, time of use, smart load, generators, simultaneous AC & DC Coupling, & peak shaving. The company has partnered with many battery companies like HomeGrid, Endure, SimpliPhi, Fortress, Blue Ion, Storz Power, PowerSync, and Discover to advance inverter and battery control through extensive communications.

  • 20 kW pk power
  • 4ms UPS Transfer times,
  • Generator support,
  • 93% Round Trip Efficiency

Sol-Ark 15K-2P

The Sol-Ark Whole Home hybrid inverter is a powerful and versatile home energy storage solution on the market. The 15K-2P hybrid solar inverter is a complete whole home backup, supporting essential appliances like your lights, internet, and refrigerator, as well as large appliances like your air conditioner when your home has lost electricity. It can also power and charge your electric vehicles or generators and help reduce your monthly electricity bills.

The 15K-2P is capable of a full 15kW of AC output to power homes, and with a built-in 200A grid pass through, the Sol-Ark Whole Home has a faster, cleaner system installation because it doesn’t need additional gateways between the grid and your home’s service panel. It’s NEM 3.0 ready, with built-in TOU functionality, this inverter provides you with high power reliability for solar energy management, enhancing your home’s energy independence and resilience.

Key specs:

  • Capacity kWh DC: 15kW
  • kW range: 12kW – 144kW
  • Operating voltage range: 150-500V
  • of MPPTs / MPPT voltage range: 3, allowed amperage 26
  • Max / CEC efficiency: 5, max- 97.6
  • Operating Temperature: -25°C — 55°C; >45C = Derating
  • UL listings: UL1741-2010/2018, IEEE1547a 2003/2014, FCC 15 Class B, UL1741SB, CA Rule 21, HECO Rule 14H

sol ark 30-60K

Sol-Ark introduced a line of three-phase hybrid inverters in light commercial 30K-3P-120/208V and industrial 60K-3P-277/480V. Both support 4 MPPTs for dc coupling, ac coupling, generators, UPS grade 200A 5ms auto transfer switch between grid/off-grid/generator, 12 parallel stacking, two independent high voltage batteries, and U.S.-based remote monitoring/control. Previously, 208V ESS applications had to use 480V inverters and massive transformers, wasting power and install time. Most previous C&I hybrids were for on-grid peak shaving or meter zeroing and lacked built-in transfer switches for grid forming. Sol-Ark 30K & 60K is an all-in-one, easy-to-install hybrid inverter for the C&I market.

  • Native 3Phase 120/208V or 277/480V without a transformer
  • Built in 200A 5ms Grid/Off-Grid/Generator transfer switch
  • Built in 4 MPPT’s for DC Coupling & Simultaneous AC coupling
  • Parallel stacking to 12 units
  • US based remote monitoring/control
  • Distributors: CED Greentech, Soligent, City Electric Supply, AEE, Krannich, Beacon, The PowerStore, GenPro energy solutions, Zonna Energy, Inter-Island, R&R, BayWa, AltE store, Northern Arizona Wind & Sun, Renvu, Multi Batteries, Warren, HES, Sentinel, Solar Solutions, & more

What’s new? SolarEdge recently launched the SolarEdge Home battery, a 10kWh battery that has 94.5% round trip efficiency and allows up to 3 batteries to be installed on its Home Hub inverter. Additionally, SolarEdge has announced several new features in its mySolarEdge app, including Weather Guard, a feature designed to fully charge the battery when a potential severe weather event is detected nearby. Looking forward, SolarEdge will release its new S-Series residential Power Optimizer, which features SolarEdge Sense Connect, a step change in arc-fault detection and prevention. In the C&I space, SolarEdge is looking to bring to market solutions that serve large-scale and community solar applications. S-series Power Optimizers implement condition monitoring features, or the ability to identify changes in a PV array that could indicate a developing arc fault.

solaredge Terramax inverter

The new SolarEdge TerraMax 330kW Inverter is designed to maximize energy production for any project terrain and for overcoming challenges posed by shading and uneven terrain on community solar ground mount sites. In addition, it is the ideal product for agri-PV, small-medium utility-scale projects and floating PV. It delivers more energy with 200% DC oversizing for up to 50% less Balance of System (BoS) costs (Based on comparisons using HelioScope on 8MW projects and typical string inverters. Numbers can change based on project characteristics).

In terms of power, this inverter helps ensure continual peak performance with an integrated PID (Potential Induced Degradation) rectifier and boosts energy yield through DC-optimized technology with multiple MPPTs.

To save on BoS costs, the inverter works with fewer and longer strings on up to 80 modules, and further streamlines by providing higher power through fewer units. The SolarEdge TerraMax inverter also speeds up onsite work with a topology feature that places the inverter in a central location alongside distributed, multiple MPPTs in the array. These factors can reduce labor, installation time and material cost with virtual central topology and single DC input architecture.

Finally, the TerraMax Inverter also simplifies operations & maintenance, reducing unnecessary truck rolls with granular, module-level monitoring, and reducing schedule risks and maximizing system uptime with automatic alerts and remote troubleshooting capabilities.

Key specs:

  • kW range: 330kW
  • Operating voltage range: 587-759 Vac
  • of MPPTs / MPPT voltage range: 12.5-105 Vdc
  • Max / CEC efficiency: 2/99.0%

UL listings: UL 1741, UL 1998, UL 1741SA, UL 1741SB

SolarEdge H1300 Power Optimizer

Supporting high power 650W modules, SolarEdge H1300 Power Optimizers enable modules in the array to work independently. The underperformance of one module will not affect others in the string, eliminating mismatch-related power losses due to shading, soiling, or aging, enabling higher overall energy production. 

The H1300 also helps to harvest more energy from bifacial modules by mitigating electrical losses caused by the varying ground albedo, shading, obstructions, or other rear-side factors. Further, inter-row shading losses are minimized with module level MPPT. Plus, up to 80-module string length is supported, resulting in fewer strings and enabling up to 50% BoS savings when compared to traditional string solutions.

Additionally, the H1300 helps keep production rolling with granular and continuous module-level data monitoring for EPCs and O&M personnel. It tracks system performance and helps to pinpoint & resolve issues remote or onsite using our Monitoring Platform.


The SolarEdge Home Hub inverter’s industry leading 99% weighted efficiency paired with its ability to DC oversize up to 200% allows installers to install more power, increase system ROI, and better meet the increasing energy needs of their customers. Additionally, the DC-coupled Home battery offers installers the ability to install the inverter, battery, and EV charger on a single breaker which enables faster installation both at the time of install, as well as with future additions, with fewer main panel upgrades. DC coupling allows for inverter, battery, and EV charger to be installed on one breaker, resulting in fewer main panel upgrades, and lower installation costs. All of this paired with a standard warranty of 12 years extendable to 25 years, integrated arc fault protection, and in app features such as Weather Guard, enables installers to offer their customers increased peace of mind and reliability.

  • 99% weighted efficiency, 94.5% round trip efficiency with SolarEdge Home Battery.
  • 3.8 kW to 11.4 kW range with up to 200% DC oversizing allowed
  • 3.8kW inverter can support up to 11.4 kW when off-grid
  • NEMA 4X and UL1741SA certified

solaredge 120K_HeroShot

Reaching up to 120kW, SolarEdge’s Three-Phase Inverters with Synergy Technology are designed to provide more power and higher profitability in large-scale PV installations. Maximizing energy production with up to 175% DC oversizing, it offers improved uptime through modularity and independently working units. A pre-commissioning feature allows installers to validate system components before connecting to the grid and the built-in night-time PID rectifier helps to avoid module performance degradation. Advanced safety is offered through SolarEdge’s arc fault protection and rapid shutdown, built-in thermal sensors on the DC and AC terminal blocks, and field-replaceable surge protection devices. Pre-commissioning designed to resolve system issues before grid connection via SetApp and a USB power bank. Monitored and field-replaceable type 2 surge protection devices (SPDs). The Synergy inverter is installed in tandem with the Power Optimizer (S1200/S1201) yielding savings on eBOS and allowing for greater energy production over plant life.

 Three Phase Inverter w/ Synergy Technology Power Ratings:

  • 50kW @208V grid,
  • 80kW, 100kW, 110kW, 120kW @480V grid

Three Phase Inverter Power Ratings:

  • 10kW, 17.3kW @208V grid;
  • 30kW, 40kW @480V grid

Commercial S-Series NAM_safety

The S-Series Power optimizers feature advanced safety features such as SolarEdge Sense Connect, an industry-first technology that detects temperature increase at the connector level, stopping power flow before an arc can occur. The SolarEdge Sense Connect technology joins an expanded range of pro-active safety features, such as built-in SafeDC, and rapid shutdown. Providing 99.5% efficiency and supporting two high power, high input current PV modules, the S-Series helps lower Levelized Cost of Energy thanks to higher yield and enables longer and more powerful strings.

Commercial S-Series Power Optimizers:

  • S1200: used for ground mount and carport applications, supporting PV panels up to 600Wp, Isc 15A
  • S1201: used for rooftop applications, supporting PV panels up to 600Wp, Isc 15A

Residential S-Series Power Optimizers

  • S440: supporting PV panels up to 440Wp, Isc 14.5A, 60V
  • S500: supporting PV panels up to 500Wp, Isc 15A, 60V
  • S500B: supporting high voltage panels with 500Wp input power, Isc 15A, and input voltage of 125V
  • S650B: supporting high voltage modules with 650Wp input power, Isc 15A, and input voltage of 85V.

What’s new? Solis US introduces a new PV String Hybrid Energy Storage inverter in Q4 2022. The new Solis S6 Hybrid models range from 3.8K to 11.4K, are UL 9540 listed with a wide variety of dc-coupled HV batteries, and now include a Bluetooth interface and a 120/240 autotransformer for native split phase backup power. This new family of inverters — S6-EH-1P-(3.8-11.4)K-H-US — is being certified to the new UL 1741 SB test standard and will be Rule 21 and HECO compliant.

solis 30 kw

The Solis S6 (Series 6) inverters are optimally designed for three phase commercial rooftop PV projects (e.g. multi-family residential) with an interconnection grid voltage of 208V.  These new inverters can also be used at sites with 240V high leg delta grid connections.  PV string current from the largest PV modules available today can be combined in the field, up to 40 amps, without fusing.  Featuring high-amp Staubli dc inputs and a very wide full power operating range, the new Solis 30K LV inverters offer installers superior design flexibility.  The NEMA 4X enclosure is relatively compact and lightweight.  The inverter has both a dc and ac switch, where the AC wiring box/switch is removable for easy swap-out.

Key Specs:

  • kW Rating: 33kW / 33 kVA
  • AC Output voltage: 208V three phase, 240V high leg Delta three phase
  • of MPPTs / MPPT voltage range: 3 independent MPPTs, voltage range of 180-1000Vdc
  • MPPT Input Current: 40 Impp / 63 Isc
  • Max / CEC efficiency: 97.7% / 97.0%
  • Enclosure: NEMA 4X (IP 66)

UL (US and Canada) listings: UL 1741 SA & SB, UL 1699B, UL 1998

Interconnection / Interoperability: IEEE 1547-2018, IEEE 1547.1-2020, IEEE 2030.5

solis utility scale

The Solis S6 250 kW inverter is the latest 3-phase utility-scale inverter from Solis US.  This inverter follows the form factor and high-reliability design that Solis offers across their US 1500V commercial product lines.  However, this product allows for high voltage PV arrays while configured for wiring to the common 600V 3-phase interconnection voltage.

This inverter features multiple DC disconnects and flexible communications connectivity (Fiber optic, Modbus RS485, Ethernet TCP/IP, PLC).  This new inverter also features data recording during ride-through events – 10 millisecond sampling of frequency, AC current, AC voltage, DC current, DC voltage and Fault.

By using multiple PV string inverters to create a larger inverter solution, owners get the redundancy and reliability that PV string inverters bring to the table, while enjoying better performance and less costly OPEX.  Solis is continuing to see interest in using our 1000V and 1500V inverters in repowering projects.

Key Specs:

  • kW Rating: 250kW / 250kVA
  • AC Output voltage: 480V three phase
  • of MPPTs / MPPT voltage range: 12 independent MPPTs, voltage range 860-1300 Vdc
  • MPPT Input Current: 40 Impp / 70 Isc
  • Max / CEC efficiency: 99% / 98.5%
  • Enclosure: NEMA 4X (IP 66)

UL (US and Canada) listings: UL 1741 SA & SB, UL 1699B, UL 1998

Interconnection / Interoperability: IEEE 1547-2018, IEEE 1547.1-2020, IEEE 2030.5

WIFICellular Stick

Size / category: Residential and Commercial Inverter Wi-Fi / Cellular Data Logging Device

The best “combination” Wi-Fi / Cellular data logging communication device on the market.  NEMA 3R, plug-and-play connection to the Solis inverter external comm port.  Powers up and begins broadcasting with 2 minutes.  Default Wi-Fi to the local router.  However, if the router fails, within 2 minutes, the W4G “stick” finds the nearest GSM or LTE cellular tower.  No breaks in data, ever.  Physical reset button and three (3) LEDs on the front tell the installer what the device is doing.  The Solis Wi-Fi / Cellular “stick” is a data logging communication tool that can broadcast data from as many as ten (10) Solis residential or commercial PV string inverters daisy-chained with Solis cords or CAT5e cable.  The S1-W4G-ST is also a great troubleshooting tool.  Using the S1-W4G-ST, an installer can connect any Solis inverter to the nearest cell phone tower and see if the inverter is broadcasting data to the Cloud.

  • Touch-safe, plug-and-play installation with no configuration of the device
  • Easy Wi-Fi connection to the local router using the installer’s own cell phone
  • NEMA 4X, installed under the inverter for all-weather performance
  • Each Solis data logging device can broadcast data from as many as 10 inverters
  • Small, rugged and easy to carry, the Solis Wi-Fi / Cellular data logging device can be a handy trouble-shooting tool
Tigo logo green

What’s new? Tigo Energy, renowned for its module level power electronics (MLPE) that enhance PV systems with other solar inverters, is listed for the first time in the Inverter Buyer’s Guide because it now has its own inverter. This Energy Intelligence (EI) Battery and Inverter product line will benefit from native integrations of other Tigo technology and is an extension of the Tigo Enhanced commercial and industrial solar partnership program into the residential market.


Our Tigo EI Residential Hybrid Inverter can work as a standalone photovoltaic inverter today and when you’re ready for storage, easily add our EI Battery. When paired with Tigo’s Optimizers, our patented PIV enables more output per given area and modules to be placed in areas with shade. PVRSS certified for Rapid shutdown with Tigo’s TS4-A-O and TS4-A-F/-2F MLPE, right out of the box. With 50V startup, the inverter can wake up early and shutdown later. This means our system is able to maximize more energy production through the day. It is UL 1741 listed.

  • Available in 3.8 kW, 7.6 kW and 11.4kW models
  • Storage-ready ‘hybrid’ inverter
  • 50V starting voltage, wide operating range
  • Up to 200% DC oversizing (2:1 DC/AC ratio)
  • Warranty = 152 months

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