EnergyChina
← Sticker Wall
JOURNEY · DETAIL
Li Zhenguo of LONGi Green Energy: Lanzhou University Physics Alumnus Bets on Monocrystalline Silicon and Drives Silicon Wafers to Global Module Shipment #1
Founded: Li Zhenguo, Zhong Baoshen, Li Chunan · LONGi Green Energy Technology Co., Ltd.
JOURNEY
Key Fields
FIELD STAMPSIndustryEnergy
RegionChina
ScaleGiant
ChannelOther
Origin
Influenced by former President Jiang Longji, Lanzhou University physics graduates Li Zhenguo, Zhong Baoshen, and others nurtured an industrial ambition. In 2000, they founded LONGi in Xi'an, naming the company after the former president. In its early startup days, the company engaged in semiconductor silicon material recycling and monocrystalline ingot pulling with razor-thin margins. The 2004 German Renewable Energy Act ignited the global photovoltaic market, causing a shortage of polysilicon materials and pushing the industry toward the simpler polysilicon route. Based on first principles, Li Zhenguo judged that the levelized cost of electricity would ultimately depend on conversion efficiency, and that monocrystalline silicon had a higher long-term efficiency ceiling. Consequently, in 2006, he went against the mainstream and fully transitioned to monocrystalline silicon wafers.
Milestones
2000
Startup Turning Point
Li Zhenguo graduated from the Physics Department of Lanzhou University in 1990 and founded Xi'an Xinmeng Electronic Technology Co., Ltd. (the predecessor of LONGi) in Xi'an in February 2000. Starting with semiconductor-grade monocrystalline silicon materials, the company mastered crystal pulling and slicing processes in its first year, laying the underlying technical foundation for its future photovoltaic transition.
2006
Technology Route Choice Turning Point
As the PV market exploded starting in 2004, the entire industry flocked to the polysilicon route due to its low technical barrier. Li Zhenguo calculated that monocrystalline conversion efficiency would hold a long-term advantage, and in 2006 decided to fully shift the company toward monocrystalline silicon wafers. This counter-consensus decision had previously caused the company's growth to lag behind peers for consecutive years.
2012
IPO and Industry Winter Failure
LONGi went public on the Shanghai Stock Exchange in April 2012, but immediately encountered US-Europe anti-dumping/anti-subsidy investigations and a major reshuffle in China's PV industry, leading to the bankruptcy of giants like Wuxi Suntech. The company posted a net loss of about 54 million yuan in its first year as a public company, surviving the clearance period through silicon wafer cost control and cash flow discipline.
2013
Diamond Wire Saw Breakthrough Turning Point
LONGi aggressively pushed for diamond wire sawing to replace slurry cutting, suffering tens of millions of yuan in losses annually during the early stages of adopting the new process. By around 2015, after full maturity, cutting costs dropped dramatically and promoted wafer thinning. The cost of monocrystalline wafers became comparable to or even surpassed polysilicon, marking a pivotal battle in monocrystalline replacing polysilicon. This phase lasted from 2013 to 2015.
2014
Vertical Integration Extension PMF
In 2014, the acquisition of Zhejiang Leye enabled entry into the cell and module segments, extending downstream to achieve integration from wafers to modules. Coupled with the mass production and promotion of monocrystalline PERC in 2017, the monocrystalline market share rapidly surged from under 20% to surpass polysilicon, validating Li Zhenguo's technological judgment from a decade prior. This phase lasted from 2014 to 2017.
2020
Reaching Global Summit Growth
In 2020, LONGi's module shipments exceeded 24 GW, securing the global number one spot for the first time and retaining it for multiple years. Its market value broke through 500 billion yuan in 2021, and revenue reached 1289.98 billion yuan with net profit attributable to shareholders at 148.12 billion yuan in 2022, making it the undisputed PV module king. This phase lasted from 2020 to 2022.
2023
Industry Heavy Losses and BC Gamble Failure
Overcapacity across the entire industry triggered a price war, leading to a sharp decline in LONGi's profits in 2023 and a net loss attributable to shareholders of about 8.6 billion yuan in 2024, its largest annual loss since going public. The company abandoned expanding TOPCon capacity and instead heavily bet on BC back-contact cells; the slow mass-production ramp-up of second-generation BC drew market skepticism, and the success or failure of the transition remains to be validated. This phase lasted from 2023 to 2024.
Turning Points
- Li Zhenguo went against industry consensus in 2006 to abandon polysilicon and fully bet on monocrystalline silicon wafers, trading a decade of waiting for route victory.
- The tenacious adoption of diamond wire sawing technology drove monocrystalline silicon wafer costs below those of polysilicon, serving as the decisive battle for monocrystalline substitution.
- The 2014 acquisition of Leye extended the company downstream into modules, transforming it from a silicon wafer supplier into an integrated module giant.
- Choosing to heavily bet on BC back-contact cells between TOPCon and BC after 2023, initiating a second major technological route gamble.
Failures & Pitfalls
- Encountered US-Europe trade barriers and industry collapse right in the listing year of 2012, suffering a loss of about 54 million yuan and narrowly escaping being swallowed by the cycle.
- Suffered tens of millions of yuan in consecutive annual losses during the early introduction of diamond wire sawing, with internal debates over whether to halt the project.
- Suffered massive losses of about 8.6 billion yuan in 2024 due to overcapacity and price wars—the largest annual loss since going public—prompting deep layoffs and contraction.
- Heavy bet on BC cells led to lagging behind rivals like Jinko Solar in the TOPCon capacity expansion window, leading to rapid erosion of module market share.
关键成功要素
- Using first principles to judge technological endpoints: levelized cost of electricity depends on efficiency, and monocrystalline has a higher efficiency ceiling.
- Willingness to sacrifice short-term growth to make a counter-consensus bet on long-term correct technology routes.
- Treating process cost reduction as a strategic weapon; diamond wire and thinning directly rewrote the silicon wafer competitive landscape.
- Vertical integration from wafers to modules to dilute costs and lock in terminal markets.
- Extreme emphasis on cash flow and balance sheet discipline, successfully navigating multiple industry bankruptcy waves.
Lessons
- Counter-consensus technological judgments require a sufficiently thick cash cushion, otherwise one might not survive until validation day.
- Single-point technology leadership cannot sustain the ultimate endpoint; supply chain integration is the lever to turn technological advantages into market share.
- Manufacturing moats stem from continuous cost reduction in process details rather than a single patent.
- Path dependence on the success of the previous cycle can become a burden in the next cycle; technological gambles must be periodically reset and re-evaluated.
Core Data
- 2022 Revenue：1289.98 billion yuan (publicly available data, independent verification unverified)
- 2022 Net Profit Attributable to Shareholders：148.12 billion yuan (publicly available data, independent verification unverified)
- 2024 Net Loss Attributable to Shareholders：Approx. 8.6 billion yuan (publicly available data, independent verification unverified)
- 2021 Market Cap Peak：Exceeded 500 billion yuan (publicly available data, independent verification unverified)
- 2020 Module Shipments：Over 24 GW, global number one (publicly available data, independent verification unverified)
- Listing Date：2012 on SSE (publicly available data, independent verification unverified)
Competitors / Peers
In the silicon wafer segment, TCL Zhonghuan engaged in a multi-year duel with LONGi using G12 large wafers, forming a duopoly. In the module segment, Jinko Solar took an early lead with TOPCon to snatch back global shipment #1 in 2023, closely followed by JA Solar, Trina Solar, and Tongwei. Cell upstart Aeko (Aixu) has also placed its bets on the BC route, engaging in a direct showdown with LONGi's HPBC. The industry has evolved from a route struggle between monocrystalline and polysilicon into a third technological melee involving TOPCon, BC, and heterojunction (HJT).