LONGi Secures Majority Stake in PotisEdge, Signaling a Major Shift Toward Global Energy Storage Leadership

LONGi Green Energy — long recognized as the world’s largest and most influential solar wafer producer — has taken a decisive step to redefine its strategic direction in the face of growing global competition. The company has moved to acquire a controlling majority stake in PotisEdge, one of China’s fastest-growing and most technologically advanced energy-storage system (ESS) integrators.

This transition marks a turning point in LONGi’s evolution from a solar-module-centric giant into a fully integrated clean-energy provider, aligning with the rapid global shift toward combined PV + storage deployments.

LONGi Takes 62% Control of PotisEdge — A Critical Expansion Beyond Modules

According to a regulatory filing submitted to the Shaanxi Administration for Market Regulation, LONGi will obtain nearly 62% of PotisEdge’s voting rights. This control is being established through a blend of equity acquisition, strategic capital injection, and the transfer of key voting powers.

With module prices dropping sharply and wafer margins tightening across the global supply chain, this acquisition gives LONGi immediate entry into a mature, high-performance energy-storage platform at a time when solar-only manufacturers face unprecedented pressure.

For industry professionals — installers, EPCs, developers, and wholesale buyers — this signals LONGi’s intention to compete directly in the fast-expanding residential, commercial and industrial ESS markets.

PotisEdge: One of China’s Most Capable and Rapidly Scaling ESS Manufacturers

Founded in 2015, PotisEdge has become a standout player in global energy storage, building deep in-house expertise across:

  • Battery safety and cell engineering

  • Power electronics and inverter technologies

  • Thermal management systems

  • Energy management software (EMS)

  • System-level integration and commissioning

The company has filed hundreds of patents, scaled production to 31 GWh worldwide, and has already deployed over 10 GWh of ESS systems across international markets.

Its rapid global expansion was highlighted recently when PotisEdge secured a 2 GWh residential ESS contract with Australia’s Club Solar, further boosting its worldwide footprint and recognition.

PotisEdge has also attracted more than 30 major strategic investors, including industrial conglomerates and leading solar-technology firms, reinforcing its status as one of the ESS sector’s most innovative and fastest-growing players.

Why LONGi Needed to Enter the Energy Storage Market Now

Despite its dominance across the solar PV supply chain, LONGi has faced strong headwinds. The company reported seven consecutive quarterly losses, closing 2024 with a CNY 8.6 billion net deficit, driven largely by the global module oversupply and steep wafer price collapses.

At the same time, LONGi’s hydrogen division has struggled to scale at speed, creating pressure for diversification into more resilient and profitable sectors.

The timing could not be more critical. China’s energy-storage market surpassed CNY 493.1 billion in revenue during the first three quarters of 2025 alone, driven by explosive demand in both grid-scale and distributed-storage applications.

By securing PotisEdge, LONGi joins other leading Chinese PV manufacturers — CATL, JinkoSolar, Trina Solar, JA Solar, and Canadian Solar — all of whom have already built strong ESS portfolios.

With this move, LONGi becomes the last major solar giant to formally commit to large-scale energy-storage integration.

Strategic Impact: LONGi Gains a Turnkey ESS Technology Stack

The acquisition delivers LONGi a complete technology platform, including:

  • Advanced battery-safety architecture

  • High-efficiency power conversion systems (PCS)

  • Integrated thermal regulation and safety monitoring

  • Next-generation energy-management software (EMS/BMS)

  • Modular system design for residential, C&I, and utility segments

In practical terms, LONGi can now offer full PV + battery solutions — a major competitive advantage as markets shift away from standalone solar to dispatchable, storage-enabled power systems.

The move positions LONGi to compete more directly with top-tier ESS manufacturers and to offer comprehensive solutions to global installers, EPCs, utilities, and distributors.

Integration Will Be LONGi’s Next Major Challenge

The acquisition gives LONGi powerful new capabilities, but its success will depend on how effectively it integrates:

  • PotisEdge’s R&D centers

  • Manufacturing scale (31 GWh capacity)

  • International sales channels

  • Software and battery-safety engineering divisions

  • Global ESS project experience

If LONGi succeeds, it could transition from a module-focused supplier into a vertically integrated renewable-energy powerhouse, delivering combined solar panels, inverters, and energy storage solutions for every system size.

A Defining Moment for LONGi — And a Clear Signal to the Global Market

LONGi’s majority acquisition of PotisEdge reflects a broader reality: the future of solar is not solely in achieving lower cost per watt, but in delivering complete, intelligent, and storage-ready systems that provide consistent energy — day or night.

As the global energy transition accelerates, companies that unify PV generation, battery storage, and integrated energy management will lead the next chapter of the renewable-energy industry.

LONGi’s move demonstrates a readiness to evolve, compete, and redefine its position in a market where solar + storage is becoming the new global standard.

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