Chinese solar module manufacturer Longi has unveiled its Hi-MO X12 module series at All Energy Australia 2026, held in Melbourne on Oct. 28-29.

The new back-contact modules target residential and commercial and industrial (C&I) rooftop solar applications, with a focus on power density, interconnection design and long-term reliability.

The Hi-MO X12 series is based on Longi’s hybrid passivated back contact (HPBC) 2.0 cell technology and features an integrated conductive backsheet architecture that replaces conventional soldered ribbons with conductive metal foil circuits embedded in the rear encapsulation structure.

According to Longi, the design enables cells to connect directly to the conductive backsheet, eliminating more than 15,000 potential solder-joint failure points per module. The company said the architecture increases the current-carrying cross-sectional area by 85%, resulting in a power gain of 6 W to 8 W compared with conventional interconnection designs.

The modules also feature what Longi calls Full-Screen Technology, which combines shingled cell layouts with hidden busbars to reduce inactive areas and front-side shading losses. The manufacturer claims the design delivers an additional 8 W to 12 W, bringing the total power gain to between 14 W and 20 W.

The larger-format LR7-72WVD module for C&I applications is available in power ratings ranging from 660 W to 690 W, with a maximum module efficiency exceeding 25.54%, according to the manufacturer.

99% under standard test conditions, according to the product datasheet.

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