Solar PV Inverter Buyer’s Guide 2024

Solar Builder solar PV inverter buyer's guide

Solar PV inverters need to do more than ever before. Solar PV inverters in 2024 must interact with the grid (UL 1741), offer more options to meet rapid shutdown (UL 3741), and ease the inclusion of battery storage. The 2024 Solar PV Inverter Buyer’s Guide showcases all of that and more — from microinverters to hybrid solar + storage inverters to large-scale PV string inverters.

As part of the 2024 Solar PV Inverter Buyer’s Guide, we asked the 15 manufacturers listed how the latest solar inverter advancements impact other areas of solar PV design, procurement, and long-term performance. Here is some of that product pro insight.

What inverter or MLE innovation has changed larger-scale PV procurement and design? “C&I string inverters are designed with higher MPPT DC input currents up to 30A, which makes these devices adaptable to the rapid changes in solar panel sizes for years and installers don’t have to retrain their crews often,” says Michael Mendik, Country Manager US/Canada, GoodWe. “This means, no concerns about matching optimizers to panel changes. Smart fans, higher frequency power electronics, and sophisticated heat sinks reduce the risks overheating.”

How can inverter selection lower other costs (like BOS or O&M) in C&I? “PV string inverters did not have the communications that were innovated by U.S. MLPE [module-level power electronics] companies where customers received detailed information from each inverter in the field. Now, with utility grid interoperability being the law of the land, PV string inverter monitoring platforms are now 2-way communicating platforms and provide much more granular information from the field. This information will make truck rolls more efficient and cost effective,” says Terence Parker with Solis Inverters.

“Labor costs are reduced thanks to the 4:1 nature of the microinverter pairing with 4 PV modules,” says Jason Higginson, Head of Marketing, North America, APsystems. “This also eliminates the need to install an optimizer or rapid shutdown device at every PV module. Also, since the inverters are located behind every 4th panel, there are no string inverters or parts to mount on a wall or in a utility closet, thereby eliminating the labor, equipment, and space needed and simplifying the installation.”

“Regarding multi-megawatt ground mount systems, a ‘centralized architecture,’ also known as ‘virtual central’ or sometimes ‘modular central’ designs, where many string inverters are co-located with a transformer near the point of interconnection, minimizes AC line losses and maximizes power delivery to the grid,” says Tyson Schoelzel, strategic sales manager C&I, SMA America. “While a centralized architecture has advantages on CAPEX, like trenching, labor, wire, and balance of system (BOS) costs, it also impacts OPEX.”

The Solar Inverter Buyer’s Guide starts with Solis, the sponsor of Inverter Month, and then continues in alphabetical order. Each manufacturer tells us what’s new this year, and updated all of their product information. Click on any product name to expand the section and get more information. If you’re interested in the financial health of a specific inverter manufacturer, check out the latest rankings from Sinovoltaics.

Solis logo updated

What’s new? SolisHub, a new microgrid interconnection device (MID).  This line side connected energy management tool, Solis believes, will be the new paradigm in residential solar.  With comprehensive mobile apps, homeowners gain full control over their PV system, battery, fossil fuel generator (if applicable), and specific home loads that they can turn on or off.  Solis has also white-labeled the S6 hybrid with Fortress, which offers the Alure, the Fortress-branded MID.  But Solis U.S. is now offering a larger, Solis-branded energy hub that we believe customers will fall in love with. 

Solis continues to work with the top PV module racking companies that have developed new UL 3741 solutions to reduce the amount of MLPE required within the PV array boundary for rapid shutdown compliance.  This is saving contractors up to 9 cents per watt on their rooftop jobs. 

Solis US is also expanding its utility-scale offerings.  Solis has released a new AC combiner Box (1000A Switch) that can combine 2, 3 or 4 inverters.  This utility-scale solution, where customers can combine multiple PV string inverters into 2-4 MW assemblies that can then connect to the new Solis U.S. Utility Skid.  These skids fit into a 20-foot container and include low and medium voltage switch gear, an MV transformer, racks for SCADA, etc. 

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

Solis website | Solis Inverter On-Demand Webinar

Solar inverters from A to Z


What’s new? APsystems’ introduced its APstorage ELS battery inverter line, which is battery-agnostic for seamless connection with various leading battery models.  APsystems also offers its APbattery for customers who don’t have a battery preference. The ELS series integrates seamlessly with APsystems’ DS3 microinverters, creating a fully integrated solar + storage solution. The smart ELS battery inverter features intelligent energy management and supports backup, self-consumption, and time-of-use modes to secure critical loads and enhance energy savings.

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

  • Distributors: CED Greentech, Krannich, Soligent, Sonepar, Wesco, Fortune Energy, EDGES, iSolar Brokers, RENVU, Crescent Electric, ECO Distributing, Enertech, French Gerleman, GenPro, Ontility, Solar Wholesale, The Power Store, Van Meter, VP Supply, UMA Solar, and Wholesale Electric

Enphase Energy logo

What’s new? Enphase is working on an end-to-end energy solution with solar, battery, EV charging, and energy management software. The IQ Battery 5P,  and the IQ EV Charger with intelligent control and monitoring capabilities, integrate with the Enphase Energy System to enable green charging. Enphase rolled out a suite of products and services to maximize value with NEM 3.0 in California. This includes an optimized Enphase Energy System, powered by IQ8 Microinverters and IQ Batteries. Solargraf, Enphase’s design, proposal, and permitting software platform, can help installers design systems that optimize solar and battery capabilities under NEM 3.0. The IQ8 product line is also expanding, including the IQ8P-3P for the commercial market, and the IQ8HC and IQ8X for high-powered solar modules.

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? 2024 is a year of opportunities for Fronius USA.  Future products are on the horizon and their Primo and Symo Advanced string inverters are fully available and in stock for purchase through our premium distribution partners. The Fronius Symo Advanced string inverter is expanding its certification reach with UL 3741 compliant flat roof mounting systems.  Fronius also launched a Repowering Tool in the US that allows technicians to find compatible string inverters to replace dated or out of warranty inverters – restoring and modernizing older or defective systems back to full capacity. They also added an extended 12-year warranty.

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

Generac logo

What’s new? Generac’s flagship DC-coupled PWRcell Solar + Battery Storage System features a 7.6 kW inverter, industry leading storage capacity of up to 18 kWh in a single battery cabinet, plus whole-home backup capabilities with the PWRcell Automatic Transfer Switch and PWRmanager advanced load management device. Generac has continued to demonstrate our commitment to powering a smarter world and supporting the transition to cleaner energy solutions through the introduction of ecobee smart thermostats that can help save money on heating and cooling costs, as well as our more recent acquisition that introduced EV chargers to the Generac clean energy lineup.


What’s new? GoodWe is a world-leading PV inverter manufacturer and smart energy solution provider. GoodWe’s comprehensive portfolio of products and solutions for residential, commercial, and utility-scale PV systems is guaranteed to deliver high performance and reliable quality across the board. With a proven track record and extensive experience in the solar industry, GoodWe has been deepening its expertise in the C&I energy sector to meet growing demand. GoodWe offers a compelling energy solution to accommodate the fast-growing C&I segment.

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 | On-demand Webinar: GoodWe’s residential and C&I ESS Solutions

Hoymiles logo

What’s new? Hoymiles has been recognized as the world’s NO.2 microinverter supplier in shipment terms in 2022 & 2023 (Source: S&P Global). The smart manufacturing base entered into operation in 2023 and the annual manufacturing capacity reached 5 million units by the end of the year. Last year, the company rolled out energy storage inverters in the US to help homeowners get ready for power outages and gain energy independence. In particular, the HYS-LV-USG1 hybrid inverter series are ideal solutions for setting up PV + storage systems from scratch; and the HAS-LV-USG1 AC-coupled inverter series are built for microinverter users so that they can add battery to their existing systems in a seamless way. The company is also set to launch a brand-new next-gen AC module solution this year, which is expected to move flexibility to the next level.


Hoymiles 2-in-1 microinverter can connect up to 2 panels at once and maximize the PV production of your installation. With a maximum DC voltage of 60 V, Hoymiles microinverter is a PV Rapid Shutdown Equipment and conforms with NEC-2017 and NEC-2020 Article 690.12 and CEC-2021 Sec 64-218. The model equipped with reactive power control and can meet the requirements of IEEE 1547, UL 1741 and CA Rule21.

  • Peak output power: 700VA
  • Commonly used module power: 280 to 470W+
  • Maximum input voltage: 60V
  • Maximum input current: 11.5A
  • Enclosure rating: IP67


Hoymiles 4-in-1 microinverter is one of the most cost-effective module-level solar solutions, as it can support up to 4 panels at once and maximize the PV production of your installation. With a maximum DC voltage of 60 volts, Hoymiles microinverter is a PV Rapid Shutdown Equipment and conforms with NEC-2017 and NEC-2020 Article 690.12 and CEC-2021 Sec 64-218. Both models listed are equipped with reactive power control and can meet the requirements of IEEE 1547, UL 1741 and CA Rule 21.

  • Peak output power: 1500VA
  • Commonly used module power: 300 to 505W+
  • Maximum input voltage: 60V
  • Maximum input current: 11.5A
  • Enclosure rating: IP67


Hoymiles new microinverter HMS-500-1T series are suitable for high-powered solar panels, which rank among the highest for 1-in-1 microinverters. Each microinverter can be connected to one panel and used in various applications, making it one of the most flexible solar solutions. With a maximum DC voltage of 65 volts, Hoymiles microinverter is a PV Rapid Shutdown Equipment and conforms with NEC-2017, NEC-2020 Article 690.12, and CEC-2021 Sec 64-218.The new Sub-1G wireless solution enables more stable communication with Hoymiles gateway DTU.

Key specs:

  • 350/400/450/500/500 W
  • Operating voltage range: 16-65 V
  • 1 MPPT, MPPT voltage range 16-60 V
  • Max / CEC efficiency:7%
  • Commonly used module power: 280 to 470W+
  • Maximum input voltage: 65V
  • Maximum input current: 16A
  • Enclosure rating: IP67

UL listings: UL 1741, UL 1741 SB


Hoymiles new microinverter HMS-1000 series are suitable for high-powered solar panels, which rank among the highest for 2-in-1 microinverters.  Each microinverter can connect up to 2 panels, with independent MPPT and monitoring maximizing the power production of your installation. With a maximum DC voltage of 65 volts, Hoymiles microinverter is a PV Rapid Shutdown Equipment and conforms with NEC-2017, NEC-2020 Article 690.12, and CEC-2021 Sec 64-218. The new Sub-1G wireless solution enables more stable communication with Hoymiles gateway DTU.

Key specs:

  • 700/800/900/1000 W
  • Operating voltage range: 16-65 V
  • 2 MPPT, MPPT voltage range 16-60 V
  • Max / CEC efficiency:7%
  • Commonly used module power: 280 to 670W+
  • Maximum input voltage: 65V
  • Maximum input current: 2 × 16A
  • Enclosure rating: IP67

UL listings: UL 1741, UL 1741 SB


Hoymiles new microinverter HMS-2000 series are suitable for high-powered solar panels, which rank among the highest for 4-in-1 microinverters. Each microinverter can connect up to 4 panels, with independent MPPT and module-level monitoring maximizing the power production of your installation. With a maximum DC voltage of 65 volts, Hoymiles microinverter is a PV Rapid Shutdown Equipment and conforms with NEC-2017, NEC-2020 Article 690.12, and CEC-2021 Sec 64-218. The new Sub-1G wireless solution enables more stable communication with Hoymiles gateway DTU.

Key specs:

  • 1600/1800/2000 W
  • Operating voltage range: 16-65 V
  • 4 MPPT, MPPT voltage range 16-60 V
  • Max / CEC efficiency:7%
  • Commonly used module power: 320 to 670W+
  • Maximum input voltage: 65V
  • Maximum input current: 4 × 16A
  • Enclosure rating: IP67

UL listings: UL 1741, UL 1741 SB

Hoymiles HMS-2000-4T-NA

Hoymiles new generation three-phase microinverter HMT-2000-4T-208-NA series is designed to accommodate the high-powered PV modules, with maximum output power up to 2000 VA and maximum DC input current up to 16 A. The innovative 4-input design enables faster installation and lower cost, and makes the HMT-2000-4T-208-NA series a very cost-effective choices. The new Sub-1G wireless solution enables more stable communication with Hoymiles gateway DTU. Smart platform S-Miles Cloud makes it possible to module-level monitoring and remote O&M.

Key specs:

  • 6/1.8/2.0 kW
  • Operating voltage range: 16-65 V
  • 4 MPPTs, MPPT voltage range 16-60 V
  • Max / CEC efficiency:5%
  • Commonly used module power: 320 to 670W+
  • Maximum input voltage: 65V
  • Maximum input current: 4 × 16A
  • Enclosure rating: IP67

UL listings: UL 1741, UL 1741 SB

hoymiles HYS-LV-USG1 Series

The HYS-LV-USG1 Series is a high-performance single-phase hybrid inverter with excellent reliability, including power classes ranging from 3.8 kW to 11.5 kW. It can support up to 10 inverters in parallel with a maximum power of 115 kW. The intelligent EMS function supports self-consumption mode, economic mode, and backup mode for multi-scenario applications. Monitoring management through S-Miles Cloud allows users to remotely diagnose and track individual system's performance over time, maximizing the total solar power production and battery utilization.

Key specs:

  • 8/4.8/6.0/7.6/9.6/11.5 kW
  • Operating voltage range: 16-65 V
  • 2 MPPTs, MPPT voltage range 125-500 V
  • efficiency 97.6%, CEC efficiency 97.0%
  • Battery voltage range: 40V–60V
  • PV input Current: 16-32A
  • DC/AC ratio up to 150%
  • Protection degree: Type 4X

UL listings: UL 1741, UL 1741 CRD, UL 1741 SB

Hoymiles HAS-LV-USG1 Series

The HAS-LV-USG1 Series is for retrofit application, including power classes ranging from 3.8 kW to 11.5 kW. It can be installed with existing PV inverters, forming an AC-coupled system. The intelligent EMS function supports self-consumption mode, economic mode, and backup mode for multi-scenario applications. Monitoring management through S-Miles Cloud allows users to remotely diagnose and track individual system's performance over time, maximizing the total battery utilization.

Key specs:

  • 8/4.8/6.0/7.6/9.6/11.5 kW
  • Operating voltage range: 16-65 V
  • efficiency 97.6%, CEC efficiency 97.0%
  • Battery voltage range: 40V–60V
  • battery discharge to AC efficiency 95.0%
  • 10 inverters in parallel
  • Protection degree: Type 4X

UL listings: UL 1741, UL 1741 CRD, UL 1741 SB


As part of Hoymiles rapid shutdown solution for PV system, HRSD-1C/2C can be connected with one and two module respectively. It meets NEC 2017, NEC 2020, UL 1741 and SunSpec Rapid Shutdown requirements, guaranteeing PV system safety. When installed with and receiving a "permission to operate" signal from Hoymiles Transmitter, HRSD starts proper operation of PV system. In case of emergency, PV system would enter module-level rapid shutdown mode by simply disconnecting the AC power of Transmitter or using an external initiator.

  • Input Voltage Range: 8–80V
  • Communication Type: SunSpec PLC
  • Maximum Current: 15 A (20 A or 25 A optional)
  • Shutdown Output Voltage: 1V
  • Outdoor Rating: IP68 / NEMA6P

DTU-Pro-S and DTU-Pro(Same)

Hoymiles gateway DTU-Pro is a data transfer unit which collects information and data of PV microinverter using 2.4G wireless solution (DTU-Pro-S uses Sub-1G wireless) and sends them to S-Miles Cloud, Hoymiles monitoring System, using different communication options such as Ethernet, Wi-Fi, GPRS or 4G. With DTU-Pro, users can easily read module-level data and alarms, realize remote operation and maintenance of PV system at any time, from anywhere on S-Miles Cloud. Pro maximum distance is 200m. Pro-S maximum distance is 400m.

Hoymiles website

morningstar logo

What’s new? Morningstar’s SureSine is built on with premium toroidal low-frequency transformer for improved sinewave stability and superior power quality. True to Morningstar’s engineering principles, SureSine’s advanced thermal design eliminates cooling fans, increasing reliability and efficiency. SureSines offer full communications capabilities including USB, Ethernet, EIA-485, CANBUS, and Bluetooth for wireless communications and wireless Android and iOS  mobile apps for set-up and monitoring using remote devices.

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)

northern electric power nep-logo

What’s new? Northern Electric Power (NEP) added NEPTUNE 3-phase inverters to go with its RSD solutions. In addition, NEP microinverters now have optional integrated WiFi hardware – the key benefit is to eliminate the need for a site gateway which reduces hardware and installation cost. Also, with the NEP Wi-Fi booster, the Wi-Fi inverters connect directly to the home Wi-Fi but independent of the consumer passwords which reduces truck roll and service burden related to consumer password/Wi-Fi changes.

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.

  • Distributors: CED, REXEL, CPS (Chint Power Systems), Solwel

SMA America logo

What’s new? SMA America, a leading provider of solar inverters and energy storage systems, continues to innovate in the renewable energy market. The latest offerings focus on enhancing efficiency and integration, meeting the evolving needs of consumers and installers alike. Advanced monitoring and control solutions enable real-time performance tracking and optimization, empowering users to maximize energy production and savings. SMA’s commitment to sustainability is evident in the emphasis on grid resilience and decentralized energy solutions, supporting a transition towards a more reliable and eco-friendly power infrastructure. With cutting-edge technology and a dedication to sustainability, SMA America remains at the forefront of the solar market.


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:

schneider electric logo

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 introduced the L3 LimitLess Lithium battery energy storage system (BESS) to offer scalability, reliability, and energy resilience for C&I operations. The L3 Series is an ideal solution for various settings, from large shopping centers and busy manufacturing plants to critical data centers and electric vehicle charging stations. It helps reduce a business’s energy bills by managing peak energy usage and allows for the generation of additional revenue streams by selling excess energy back to the grid. Moreover, the Sol-Ark L3 LimitLess Lithium has a built-in aerosol fire suppression system in both the module and cabinet for enhanced safety. Its modular design can expand from 400 kWh to 9.6 MWh.


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

SolarEdge logo

What’s new? The SolarEdge TerraMax Inverter and SolarEdge H1300 Power Optimizer. Check it out below.

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.

Tigo logo green

What’s new? Tigo can now support generators up to 24 kW when paired with Tigo 200A GO ATS (Automatic Transfer Switch). Also, integration into EI Professional, Tigo’s multi-site management platform that reduces truck rolls for installers and O&M providers


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

Listen to more in-depth conversations on Solar Builder's YouTube channel

Our most popular series include:

Power Forward! | A collaboration with BayWa r.e. to discuss higher level industry topics.
The Buzz | Where we give our 2 cents per kWh on the residential solar market.
The Pitch | Discussions with solar manufacturers about their new technology and ideas.

Tags: , , , , , , , , , , , , , , , ,

See Discussion, Leave A Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

  • -8
  • April 24, 2024 08:32:28

    These are all nice products. If you’d like to see more, but at a much better price, please take some time to check out our selection.