On October 29, 2025, Tencent's "Carbon Search Initiative 2.0" Global Top 50 Award Ceremony was grandly held at the venue of the Shenzhen Summit. Innovative entities from 12 countries and regions around the world gathered together, among which ZH Energy successfully made it into the Global Top 50 with its groundbreaking technology. Furthermore, it stood out from the fierce competition and became one of the only 8 finalist teams in the Long-Duration Energy Storage (LDES) technology track, representing Chinese strength in competing for the pinnacle of global climate technology.

As a milestone project under Tencent's "Technology for Good" initiative, the core value of Carbon Search Initiative 2.0 lies in its solid support for the implementation of climate technologies. Its "CarbonX Program 2025 Top 50" list selects the top 50 candidates from over 660 applications across 54 countries/regions worldwide, with a core mission to cross the innovation "Valley of Death" — bridging the critical gap for early-stage technologies transitioning from "laboratory to industrialization".Shortlisted teams will not only continue to compete for a total of 200 million RMB in catalytic funding, but also gain access to expert guidance, technical resources, and opportunities to launch pilot projects in real-world scenarios in places like the Maldives and Kenya. Lin Jinghua, Senior Vice President of Tencent, emphasized: "We don’t just invest in ideas; we also build pathways to turn technologies into solutions." As one of the four core focus areas, Long-Duration Energy Storage (LDES) is precisely a key lever for stabilizing renewable energy power grids.

ZH Energy  shortlisted "High-Safety, Low-Cost Ferrous Sulfur Flow Battery Long-Duration Energy Storage Technology" directly addresses the industry’s core pain points. Compared with mainstream energy storage technologies, this technology achieves three major breakthroughs:

• Ultimate Cost Control:The electrolyte is based on mass-produced chemical raw materials such as sulfur and iron, costing only 1/10 of vanadium electrolyte. The full-life cycle levelized cost of electricity is as low as half that of lithium batteries.

• Inherent Safety Advantages: It uses an aqueous electrolyte with no risk of combustion or explosion. The fully liquid system avoids phase transition risks, and no cooling system is required in high-temperature environments, making it suitable for complex scenarios such as tropical islands.

• Commercial Maturity: It has built the world’s first ferrous sulfur energy storage verification system in collaboration with the State Grid. In 2025, a 125KW/1MWh demonstration system was released, with a current density exceeding 120mA/cm², and it is on the verge of large-scale application.

From the Shenzhen Summit to the Maldives pilot, the Carbon Search Initiative is accelerating the implementation of the Paris Agreement goals through global ecological synergy.ZH Energy breakthrough not only confirms the commercial potential of ferrous sulfur flow batteries in the long-duration energy storage (LDES) sector, but also highlights the significant value of Chinese technology in global climate governance. As Xu Hao, head of Tencent Carbon Neutrality Innovation Center, said, "Innovation is the only way for sustainable development."In the future, ZH Energy will leverage the Carbon Search Initiative platform to enable high-safety and low-cost energy storage technologies to serve the global renewable energy transition, injecting Chinese momentum into the 2050 net-zero target.