On December 12, 2025, HiTHIUM Eco-Day took place in Xiamen, China, marking the company’s third annual flagship event focused on long-duration energy storage innovation and industry leadership. Bringing together global energy storage experts, AI data center leaders, ecosystem partners, and industry analysts, 2025 Eco Day centered on “The Awakening of Energy · The New World.” The event not only showcased our forward-looking insights on renewable integration and storage challenges but also featured the global launch of three groundbreaking technologies — signaling a new era for HiTHIUM’s energy storage solutions.
The energy transition demands robust solutions that can overcome the intermittency of renewable power sources like wind and solar. As the grid evolves, energy storage systems must move beyond conventional, EV-derived battery architectures — which typically focus on short durations — and instead support long-duration energy storage (LDES) that can deliver power spanning multiple hours for grid balancing and renewable smoothing.
Industry analysts concur that deploying LDES at scale is critical for transforming variable renewable generation into reliable, always-available green power. Moreover, emerging applications such as AI data centers (AIDCs) require both stability and rapid responsiveness from energy storage systems — a combination not fully supported by traditional approaches.
Against this backdrop of accelerating renewable deployment, rising grid complexity, and rapidly evolving load profiles, HiTHIUM’s response is not incremental optimization—but structural innovation. Rather than adapting legacy battery architectures, we have re-engineered our energy storage systems from the cell level upward, aligning chemistry, system design, and application scenarios around long-duration performance, safety, and economic viability.
At Eco Day, this philosophy was translated into a new generation of HiTHIUM’s energy storage solutions—each designed for a clearly defined role in the future energy ecosystem.
HiTHIUM’s ∞Power8 system represents the world’s first native 8-hour LDES solution, purpose-built from the ground up for extended capacity and efficient grid service. Unlike conventional systems that adapt EV-grade cells, this platform integrates storage, safety, and power electronics into a design optimized for all-weather renewable deployment. Here’s a detail configuration of this solution:
6.9 MW of power and 55.2 MWh of energy capacity per unit — ideal for renewable smoothing, peak load shifting, and multi-hour grid support.
An integration level >10 % higher than traditional 6+ MWh systems, reducing redundant components and simplifying architecture.
An estimated USD 1 million+ savings per 1 GWh of long-duration deployment thanks to intelligent control, active balancing efficiency, and auxiliary power reduction.
Withstanding extreme temperatures up to 800 °C and pressures up to 300 kPa —incorporating robust safety features, including insulation materials and structural design, verified through advanced fire-resilience testing.
The ∞Power8 establishes a new benchmark for long-duration energy storage—delivering superior economics, operational performance, and reliability for utility-scale renewable integration. Mass production of the ∞Power8 system is scheduled for Q4 2026, establishing a new technical pathway for long-duration storage that advances cost-efficiency, safety, and operational performance in the transition to all-weather green power.
At the foundation of the ∞Power8 system lies the ∞Cell 1300Ah 8h—a battery cell engineered specifically for 8-hour long-duration applications. This dedicated 8-hour cell represents the convergence of HiTHIUM's proprietary ultra-thick electrode technology and multilayer safety protection, delivering unprecedented capacity while maintaining superior safety and longevity.
1300Ah capacity per cell — more than four times the capacity of mainstream products, enabling the 6.9MWh BESS configuration with significantly fewer components.
Over 50% reduction in foil and power component costs compared to 2-hour cells, achieved through significantly increased electrode thickness that optimizes the balance between performance and economics.
25+ years of designed operational lifespan, ensuring full-lifecycle safety and providing solid long-term returns for long-duration energy storage investments.
Non-propagating thermal runaway verification through rigorous safety testing, incorporating multilayer protection from materials through system integration.
Together, these innovations position the ∞Cell 1300Ah 8h as a foundational breakthrough in long-duration energy storage—combining exceptional capacity, cost competitiveness, and comprehensive safety in a single cell platform designed for decades of reliable operation. It accelerates the industry's transition from adapted 2-hour systems to purpose-built 8-hour solutions that make all-weather green power a viable reality for global energy systems.
As artificial intelligence reshapes global computing infrastructure, AI data centers (AIDCs) face an unprecedented energy challenge: surging workloads drive exponential power demand growth, yet traditional grid infrastructure requires 5–10 years to expand capacity. Compounding this bottleneck, AI workloads generate extreme load fluctuations—up to 70% variation within tens of milliseconds—threatening both grid stability and data center operations while increasing reliance on carbon-intensive power sources.
HiTHIUM's response is the ∞Power Solutions for AI Data Center—the world's first collaborative lithium-sodium full-duration energy storage portfolio. This integrated solution combines long-duration lithium BESS with high-rate sodium-ion BESS to construct a coordinated "source-grid-load" energy support framework, addressing AIDC's core requirements across sustainability, agility, stability, and cost efficiency.
The Portfolio Architecture:
∞Power 6.25MWh 4h — Long-duration lithium BESS for extended backup and load balancing
∞Power 6.9MWh 8h — Extended-duration lithium BESS for maximum renewable integration and zero-carbon backup
∞Power N2.28MWh 1h — High-rate sodium-ion BESS for instantaneous response and load smoothing
∞Power 6.25MWh 2h — Standard-duration lithium BESS for flexible grid services
Through this lithium-sodium collaboration, HiTHIUM has constructed a multilayer, full-scenario smart energy security system spanning the energy source, the grid, and the load. The portfolio not only resolves today's critical tension between compute growth and power availability but also provides future-proof infrastructure that is green, agile, stable, and economical for the AI era.
By bridging the gap between accelerating computational demands and constrained energy supply, HiTHIUM enables AI data centers to scale sustainably while maintaining the ultra-high reliability standards required for mission-critical operations.
Our products unveiled at Eco Day signal a fundamental recalibration of how the energy storage industry approaches system design, chemistry selection, and application optimization.
The industry has traditionally approached long-duration applications by scaling up 2-hour systems, carrying inherent inefficiencies in component design, thermal management, and control architecture. The ∞Power8 breaks this pattern by engineering every component—from the 1300Ah cell's ultra-thick electrodes to thermal-island simulation—specifically for 8-hour performance. This yields over 10% higher integration, 30% efficiency improvements, and 30% lower auxiliary consumption versus adapted systems.
This establishes a new industry principle: duration should determine design from the cell level upward, not be accommodated through system multiplication. For an industry increasingly focused on multi-hour applications supporting renewable baseload replacement, this paradigm shift has profound implications.
The ∞Power Solutions for AI Data Center validates chemistry diversification within single deployments. High-rate sodium-ion handles millisecond fluctuations where power density matters most, while long-duration lithium provides multi-hour backup where energy density dominates. This performance-centric approach suggests future installations may resemble integrated portfolios rather than homogeneous battery banks.
For the broader industry, this validates alternative chemistries not as lithium-ion replacements but as complementary technologies that expand what energy storage can achieve, while highlighting the growing importance of intelligent systems capable of orchestrating multiple storage technologies in real-time.
HiTHIUM's solutions provide crucial economic validation for long-duration storage. The ∞Power8's USD 1 million+ savings per 1 GWh and 20% lower lifecycle costs than diesel generators for AIDC backup demonstrate that purpose-built long-duration systems can compete economically with both traditional storage and conventional power sources. Combined with compressed deployment timelines—1–2 years versus 5–10 for grid infrastructure—these innovations prove that technical excellence and economic viability can coexist in long-duration applications, accelerating the business case for utility-scale renewable integration and grid modernization.
The 2025 HiTHIUM Eco-Day underscored our commitment to leading the next chapter in energy storage. It is not just through incremental changes, but with purpose-built products, technology innovation, and strategic vision. From the ∞Power8 6.9MW/55.2MWh system and ∞Cell 1300Ah to integrated AI-centric solutions, we continue to push the boundaries of what energy storage can achieve in a decarbonizing world.
The future of energy storage is longer duration, safer, and increasingly tailored to the needs of tomorrow’s energy ecosystem. To get closer to the future, HiTHIUM would be your best partner. Contact us today to understand more!
