Longi launches Longi One: new integrated solar-plus-storage platform strategy

China’s Longi has unveiled “Longi One,” an integrated solar-plus-storage strategy that it said will replace conventional multi-vendor project architectures with a unified system design.

The strategy, announced in Beijing on April 1, marks a shift from what the company described as fragmented, “assembled” systems toward full-stack integration. Longi said the approach combines its back-contact (BC) solar technology with its “5S” storage technology into a single platform it calls a “Solar Generator.”

The company summarized the concept as “One System, One Platform, One Responsibility,” positioning itself as the single provider across project delivery and operations.

Longi said the integrated architecture is intended to reduce system losses, improve performance, and shorten deployment times. The company added that its AI-driven control platform can coordinate generation, storage, and consumption, while the “One Responsibility” model is designed to streamline accountability across the project lifecycle.

The strategy includes products for utility-scale and commercial and industrial (C&I) segments.

For utility-scale projects, Longi introduced “OneBank 2.0,” an integrated AC/DC storage system. The company said its proprietary iCCS technology enables millisecond-scale fault detection and isolation, reducing system-level failure rates by 60% and pre-commissioning time by more than 30%.

It also launched “OneMatrix 2.0,” a modular plant-level solution for two-hour, four-hour, and eight-hour storage durations. Longi said the system can reduce deployment time by 20% to 30% and lower lifecycle costs.

For the C&I segment, Longi presented “Hi-MO One,” paired with the “EnergyOne” platform. The company said the solution delivers module efficiency of 24.8% and system efficiency of up to 90.3%, with response times below 20 milliseconds and AI-based energy management.

Alongside the product rollout, Longi announced a global service initiative called the “2830 Plan,” which aims to establish 30 localized service centers in key overseas markets by 2028. The company said the plan builds on 13 GWh of delivery experience across more than 120 countries and will provide lifecycle support.

The launch also marks Longi’s first comprehensive storage strategy since acquiring Suzhou-based energy storage company Potis Edge, signaling a broader move from PV manufacturing toward integrated energy systems.