The expo also saw exciting project collaborations between Hoymiles and its Brazilian partners on C&I ESS, consolidating the company’s leading market position in Latin America and representing a new milestone in commercial ESS deployment in the region.
Hoymiles debuted its new HMS-2250DW-4T microinverter optimized for today’s high-powered PV modules. The microinverter delivers up to 2250 VA of output power and supports PV input currents up to 18 A for better compatibility with 182 mm and 210 mm modules.
Each microinverter connects to four PV modules, reducing system costs and simplifying system design, while its built-in Wi-Fi enables direct monitoring without a separate gateway. Supported by the Flex-S3 cable system, all installation is just plug and play, making the microinverter ideal for scalable and cost-effective solar deployments.
The HYS-7.5LV-USG1 split-phase hybrid inverter delivers 97.6% max. efficiency (97.0% CEC) with a double MPPT tracker supporting up to 32 A MPPT current and a DC/AC ratio of 150%. The 0ms on-grid and off-grid switch promises an uninterrupted power supply. Moreover, the 2 times 10s overload capacity ensures smooth startup for high-surge appliances, offering seamless backup power for whole-home or critical loads.
Engineered for maximum performance and reliability, HoyUltra2 (HESS-261-2h) features a fully liquid cooling system for both battery and PCS, enabling full-capacity operation without derating even at 50°C ambient temperature and 3,000 m altitude. The maximum round-trip efficiency reaches as high as 90.3%.
With a six-type safety protection mechanism, HoyUltra 2 ensures 24/7 secure and intelligent operations. The quiet 60dB operation and IP55-rated protection make HoyUltra2 ideal for supermarkets, hotels, residential communities, and other sensitive environmental conditions.
The HoyPrime 5MW/10MWh utility-level ESS offers a cost-effective, high-density energy storage solution with a reduced footprint, achieving up to 15% savings in construction costs. HoyPrime also features intelligent liquid cooling to minimize auxiliary power use and extend lifespan. Standardized interfaces and automated maintenance simplify deployment and O&M. Certified to IEC and UL standards, HoyPrime is already powering projects worldwide, reinforcing Hoymiles’ global energy storage leadership.
New project partnerships forged on ESS innovation in Brazil
During the expo, Hoymiles also advanced its energy storage deployment through new collaborations by reaching strategic partnership frameworks with the Institute of Energy and Environment (IEE) of the University of São Paulo and SAAE Salto, the municipal water and sanitation authority of Salto, São Paulo.
On August 27, Hoymiles and IEE held a high-level seminar at the University of São Paulo, with professors Roberto Zilles and Marcelo Pinho joining Hoymiles executives including CEO Yang Bo and CTO Zhao Yi.
Welcoming the technical exchange with Hoymiles, Professor Roberto Zilles of IEE said: “We aim to advance solar-plus-storage applications in Brazil and build replicable models that will support renewable energy development across Latin America.”
Hoymiles CEO Yang Bo noted the company’s deep engagement in Brazil for a decade and was optimistic about the collaboration. “This partnership with IEE marks an important step in driving technological innovation and responding to Brazil’s energy transition,” said Yang. “We will continue to strengthen local investment, enhance industry–academia collaboration, and foster joint innovation with IEE to support the country’s sustainable energy future.”
