At the roadshow session of the 2025 Carbon Peak and Carbon Neutrality Forum & Shenzhen National Low-Carbon City Forum on Oct. 29, Zou Guohai, marketing director of Exax Energy Tech, presented the company’s compressed carbon dioxide (CO₂) energy storage project, highlighting its advantages in safety, cost efficiency, and long-duration storage compared with mainstream electrochemical storage technologies such as lithium batteries.

10月29日，在2025碳达峰碳中和论坛暨深圳国家低碳城论坛坛的路演环节上，百穰新能源有限公司的市场总监邹国海展示了公司的压缩二氧化碳储能项目，重点介绍了该项目在安全性、成本效益和长时储能方面相对于锂电等主流电化学储能技术的优势。

According to Zou, the company’s gas-liquid phase change CO₂ storage system aligns with China’s and global efforts to reduce carbon emissions by utilizing captured CO₂ from industrial sources like cement plants and thermal power stations. “Our system not only stores energy but also contributes to carbon sequestration,” he said. “Unlike electrochemical storage, CO₂ is an inert gas, non-flammable, and non-explosive, ensuring an exceptionally high level of safety.”

邹国海表示，百穰使用气液相变二氧化碳储能系统，充分利用水泥厂和热电站等工业源捕获的二氧化碳，这与中国及全球的减碳努力高度契合。他解释道：“我们的系统不仅能储存能源，还有助于碳封存。与电化学储能不同，二氧化碳本身是惰性气体，不易燃易爆，因此安全性极高。”

The storage process involves compressing CO₂ into a medium-pressure liquid state at around 7MPa and 23°C, making it stable and secure. This enables efficient long-term storage. Currently, Exax’s system achieves 40% energy conversion efficiency, with plans to reach higher levels within five years through material innovation in collaboration with Xi’an Jiaotong University.

在储能过程中，该系统将二氧化碳压缩至约7MPa、23℃的中压液态，使其处于稳定安全的状态，从而实现高效的长期储能。目前，百穰系统的能量转换效率已达40%，公司计划与西安交通大学合作研发新材料，在未来五年内将效率推向新高度。

Zou Guohai, marketing director of Exax Energy Tech, presents the company’s compressed carbon dioxide (CO₂) energy storage project during the roadshow session of the Shenzhen Low-Carbon City Forum in Longgang District on Oct. 29. 

10月29日，百穰新能源科技市场总监邹国海在深圳龙岗区低碳城论坛登台路演，展示了公司的压缩二氧化碳储能项目。

Zou emphasized that CO₂ energy storage holds a natural advantage for long-duration applications, capable of sustaining electricity output for 6–8 hours—far exceeding the current national average of 2.3 hours for energy storage systems. At a cement’s plant in Anhui Province, Exax’s project already enables the facility to store power overnight and release it during daytime operations, using renewable energy to maintain stable production.

邹国海强调，在长时应用方面二氧化碳储能具有天然优势，能够持续供电6-8小时，远超目前全国储能系统平均的2.3小时水平。在安徽一家水泥厂，百穰的项目已能确保设施在夜间储存电力、日间供电，利用可再生能源维持稳定生产。

He pointed out that the technology can also support grid balancing at large-scale renewable bases such as those in Xinjiang, helping smooth fluctuations caused by intermittent solar and wind power generation. “When clouds block sunlight or wind conditions change, our system can immediately release stored energy to stabilize the grid and reduce renewable energy curtailment,” Zou explained.

邹国海还指出，该技术同样能解决在新疆等大型新能源基地的电网平衡难题，有效稳定因太阳能和风能间歇性发电导致的波动。他解释说：“当云层遮日或风力突变时，我们的系统能瞬时响应，释放所储电能以稳定电网，有效减少可再生能源的浪费。”

Reflecting on the roadshow experience, Zou praised the platform for bringing visibility to long-duration energy storage, an emerging but less understood segment of the industry. “Many people are familiar with battery storage, but not with systems like ours, which are not limited by geography or climate. The forum helps us raise awareness and promote consensus about the importance of long-duration storage for a low-carbon future,” he said.

回顾此次路演，邹国海认为这一活动让长时储能这一新兴却鲜为人知的领域获得了更多关注。他表示：“很多人了解电池储能，却不了解像我们这种不受地理气候限制的系统。这次论坛帮助我们提升了公众认知，并凝聚了长时储能是实现低碳未来关键一环的共识。”

Founded in 2021 and headquartered in Shenzhen, Exax Energy is a research-driven company with over 70 patents developed through years of collaboration with Xi’an Jiaotong University. Its R&D team makes up more than 70% of the staff, reflecting the company’s deep commitment to technological innovation.

百穰新能源成立于2021年，总部位于深圳，是一家研发驱动型企业，通过与西安交通大学多年合作，已拥有70多项专利。其研发团队占员工总数的70%以上，彰显了其深耕技术创新的坚定决心。

Zou noted that Exax’s breakthroughs include new materials for gas containment—specifically, soft-membrane systems for CO₂ storage that ensure zero leakage and high safety. Such advances are paving the way for wider deployment in industrial and renewable settings.

邹国海介绍，公司采用新材料进行气体密封，特别是保障二氧化碳储存零泄漏、高安全的软膜系统，这是百穰取得的一项技术突破。这些创新为其在工业与可再生能源场景的规模化应用铺平了道路。

Looking ahead, Zou believes CO₂ energy storage will play a vital role in China’s zero-carbon industrial park initiatives, key components of the country’s 15th Five-Year Plan. “Industrial parks account for 60–70% of urban electricity use. To build truly zero-carbon parks, stable and flexible energy storage is essential,” he said.

展望未来，邹国海相信，二氧化碳储能技术将在建设中国零碳工业园这项倡议中居于关键地位，而该倡议正是“十五五”规划中不可或缺的一部分。“工业园区占城市用电量的60-70%，要建设真正的零碳园区，稳定灵活的储能至关重要。”

“As renewable energy becomes dominant, storage will no longer be optional—it will be a mandatory part of the clean energy system. CO₂-based long-duration storage will be indispensable for ensuring grid stability, maximizing the use of green power, and powering the next generation of sustainable industry.”

他强调：“随着可再生能源迈向主流，储能将从‘可选项’变为‘必选项’，成为清洁能源系统的标配。其中，二氧化碳长时储能技术，是保障电网稳定、充分利用绿色电力、深度赋能下一代可持续产业的破局关键。”