At the livestreamed launch event for Huasun’s new 760W/2000V high-efficiency HJT module, Jimmy Xu, Chairman of Huasun Energy, addressed global viewers and shared insights into the latest advancements in heterojunction technology, delivering the following keynote address.
The new Himalaya 760HV module elevates mass-production power for HJT 210-132 modules to 760W while achieving a 2000V system voltage. It is the first flagship module in the industry to combine both ultra-high power and ultra-high system voltage. We call it the "7-2 solution."
Why 760W?
Across TOPCon, BC, and HJT technologies, iteration is accelerating. Achieving higher deliverable power to secure premium value has become a shared industry goal. Our 760W module delivers a conversion efficiency of 24.5%, surpassing the 24.5% efficiency of mainstream BC modules. Most 24%–24.5% efficient modules in the market still fall within the 650–670W range, while outputs above 750W are increasingly favored for utility-scale projects. The Himalaya 760HV therefore stands as a compelling high-efficiency option for large-scale applications. This is why the first theme of today’s launch is "Breakthrough."
Why 2000V?
The second theme of today’s launch is "Elevation." The "HV" in Himalaya 760HV represents its ultra-high 2000V system voltage. The last major voltage upgrade occurred around 2016, when the standard shifted from 1000V to 1500V—significantly reducing system costs and accelerating technological progress. Calls for a move to 2000V have persisted for years, and many inverter manufacturers are already prepared for the transition due to its clear potential for lower system costs and higher overall efficiency.
Our analysis shows that increasing system voltage from 1500V to 2000V in regions such as Xinjiang can reduce BOS costs by 1.7 US cents/W. Combined with the 0.4 US cents/W cost reduction enabled by the 760W high-power design, total BOS savings reach about 2.1 US cents/W. Over a 25-year lifecycle, O&M savings add another 1.4 US cents/W. For a 10GW power plant, this equates to about US$210 million less in initial investment and US$140 million in O&M savings.
Why has the industry not moved to 2000V sooner?
For traditional encapsulation, the minimum creepage distance is 10.4 mm for 1500V modules and 15 mm for 2000V modules. Increasing creepage distance reduces active cell area, power loss and lower efficiency. As a result, few manufacturers were willing to sacrifice efficiency for higher system voltage, and while a few have conducted small-scale 2000V module trials and demonstration plants, these products never entered wide commercialization.
Breaking the technical deadlock
Huasun has addressed this challenge with its non-perforated butyl edge sealing technology, supported by dedicated equipment and verified through IEC testing and TÜV Rheinland’s latest lightning-impulse tests. With this approach, we can achieve the required creepage distance for 2000V with approximately 3 mm of non-perforated butyl width, while reserving 9 mm to ensure robust safety margins.
At the same time, through a negative-spacing design, we increased wafer size from 210×105 mm to 212×106.7 mm and enlarged the active cell area. Combined with advancements in tandem coating processes, this delivers an additional 20W of module power. The outcome rivals tri-cut and quad-cut designs in the market, while maintaining simpler manufacturing. Under structurally low returns for utility-scale plants, the "7–2 solution" provides a timely upgrade path for projects seeking renewed investment value.
In recent years, Huasun has worked relentlessly to advance HJT industrialization and accelerate the progress of the PV sector. We established the HJT Collaborative Innovation Platform and the HJT "760 Club"; developed the half-ingot, half-wafer ecosystem; pioneered mass production of light-conversion films, silver-coated copper, steel mesh and nickel mesh; and advanced HJT–perovskite tandem pilot lines. These efforts have accelerated HJT progress and contributed to broader industry transformation.
With the introduction of the Himalaya 760HV, we aim to leverage module power and system voltage together to drive cost reductions and efficiency gains. Utility-scale projects and offshore PV projects will be the primary beneficiaries. At the same time, we hope to accelerate the development of a complete 2000V supply chain and support the global transition toward more sustainable, lower-cost solar energy.
Photovoltaics represent an energy revolution—not a price contest. The Himalaya 760HV embodies this vision, marking a technological milestone and urging the industry to pursue innovation over repetition.
Huasun remains committed to innovation and long-term value creation, pursuing the vision of "Empower solar as the true primary energy" to enable the global energy transition and advance the development of sustainable energy worldwide.
Thank you.
