Press Release
Solar & Energy
Fronius and Renon Deliver a New High-Voltage DC Pairing for Solar Inverter and Battery Storage
Renon and Fronius, two long-term manufacturers in the solar industry, are excited to announce a new DC-coupled solution that offers uninterrupted power for residential photovoltaic systems. The Fronius GEN24 and Fronius GEN24 Plus solar inverters (3.8-10.0 kW) and the Renon Xtreme HV 1.0 battery energy systems (9.6, 14.4, and 19.2 kWh) are officially fully certified to UL 9540. This inverter-battery combination delivers the advantages of high-voltage DC-coupled energy storage, offering installers and end-users a more flexible, efficient, and future-ready power and a 10-year warranty on both products. You can also get two extra years of material warranty when registering on Fronius Solar.web and the Renon app.
Testing has been successfully completed between the Fronius GEN24 and Fronius GEN24 Plus inverter line and the newly available Renon Xtreme HV 1.0 DC-coupled battery system to meet all UL 9540 and UL 9540A safety and performance requirements. The new battery will officially be available in North America starting February 12, 2026, offering solar installers and homeowners a powerful new storage solution that pairs seamlessly with the innovative Fronius GEN24 Plus smart inverter.
All-New Renon Xtreme HV 1.0: Built for High Efficiency & Scalability
The Renon Xtreme HV 1.0 is a high voltage and exceptionally reliable battery system built for residential use. Its high-voltage range of 192–384 V minimizes transmission losses, while the modular design supports 2 to 4 stacked modules for enhanced reliability through dynamic current equalization. The system features advanced smart management WiFi connectivity, an intelligent Energy Management System (EMS), and a battery optimizer rated for up to 8,000 cycles. When coupling the new Renon Xtreme HV 1.0 battery to the Fronius GEN24 Plus, you’ll receive a continuous source of uninterrupted power closed-loop power to support homeowners seeking true energy independence. Check out Renon’s digital tool apps, Renon Smart and Renon Cloud, to gain access to comprehensive monitoring and management for home energy storage, allowing users to track real-time performance, monitor energy generation/consumption. The Renon Xtreme HV 1.0 is certified with IEC 62619, UN 38.3, UL 1973, and UL 9540.
Get the Most Out of PV Systems with Fronius GEN24
The future-ready Fronius GEN24 solar inverter can be upgraded to a GEN24 Plus hybrid inverter with the simple over-the-air software UP.storage update via the Fronius Solar.web app and the Fronius Webshop allowing homeowners to add battery storage when they’re ready. With high efficiency, reliable active cooling technology, and the Dynamic Peak Manager intelligent shade monitoring, the Fronius GEN24 stands out as an ideal residential solar inverter. Every Fronius GEN24 comes standard with built-in basic backup power via the integrated PV Point, delivering immediate peace of mind by powering a dedicated 15-amp GFCI outlet - even without a battery connected. By attaching the Renon Xtreme HV 1.0 to the Fronius GEN24 Plus, you’ll receive the high performance that you can expect with this DC-coupled efficient solution along with intelligent time-of-use battery management to optimize energy use, which can all be done through your Fronius Solar.start and Solar.web apps. Most recently, Fronius GEN24 Plus end-customers can benefit from the Energy Cost Assistant, available with Solar.web Premium, which automatically optimizes battery charging and discharging using generation and consumption forecasts as well as current energy prices. The Fronius GEN24 is certified with UL 1741 SA, UL 1741 SB, UL 1699B, UL 9540, and IEEE 1547-2018 requirements, ensuring safe, compliant, and future-proof operation.
Get More Information: Upcoming Fronius and Renon Events
Join us at Intersolar & Energy Storage North America in San Diego, CA from February 18-20, 2026, where you can meet Fronius USA and Renon USA and view the paired inverter-battery solution on display. If you’d like to meet us virtually, we’ll also be hosting a webinar learning session during the week following IESNA. Don't miss your chance to explore what’s next for solar energy and storage in the United States of America.
Connect with us at IESNA 2026
LIVE virtual session with Q&A
Renon and Fronius Leadership Statements
“Homeowners want flexibility without compromising battery performance,” said Renon USA Owner & CEO, Paul Buckwalter. Buckwalter adds, “Furthermore, they can secure that with Renon Xtreme HV 1.0’s high-efficient and high-voltage energy storage that’s ready to deliver 8,000 cycles for energy output and can be paired seamlessly to the Fronius GEN24 Plus.”
“Fronius USA is thrilled to collaborate with Renon to announce the complete capability of the Fronius GEN24 Plus solar inverter and the Renon Xtreme HV 1.0 solar battery, which delivers an intelligent, efficient, and future-ready energy independence that homeowners desire, “ said Chris Connell, Head of Solutions for Fronius USA.
Fronius has 7,000 employees worldwide and a current export share of 85 percent and 1,604 active patents. Founded in 1945 as a one-man business, Fronius now runs 37 international subsidiaries and has a sales partner network spanning more than 60 countries. And yet, at our core, we remain a privately owned Austrian family business. With our Welding Solutions, we are continuously revolutionizing welding technology, while in Solar & Energy Solutions we focus on making the best use of solar energy. As different as these business areas may seem at first glance, we have been pursuing a clear mission for 80 years: to research and control electricity as the fuel of the future. We develop products and solutions for a future worth living and offer our customers an all-in-one package: from preliminary planning and advice to ongoing monitoring and a needs-based repair service. We are innovative. We are curious. We are Fronius.
About Renon Power
Headquartered in McKinney, Texas, Renon Power is a veteran-owned global energy storage manufacturer delivering advanced battery energy storage solutions for residential, commercial & industrial, and utility-scale applications. With its new U.S. gigafactory serving as the company’s global headquarters, Renon Power is investing heavily in American manufacturing while maintaining a strong and growing presence across Europe and Japan. Renon Power designs and manufactures high-performance lithium energy storage systems—ranging from residential low- and high-voltage batteries to modular C&I cabinets and large-scale containerized solutions—engineered for safety, scalability, and seamless integration with leading inverter partners. Every system is built around intelligent battery management, rigorous quality control, and real-world operating demands. Driven by a mission to strengthen energy independence and grid resilience, Renon Power combines engineering-led innovation, competitive pricing, and fast lead times to support installers, EPCs, and energy professionals worldwide. As a veteran-owned company, Renon Power brings a disciplined, reliability-first mindset to powering a cleaner, more resilient energy future.
Press Contacts:
Mary Harkins – Fronius USA
harkins.mary@fronius.com
Pablo Vial – Renon USA
pablo@renon-usa.com
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