CHEX Energy Storage
CHEX Energy Storage (CHEX) is our award-winning, patented long-duration energy storage technology, designed to efficiently store and recover energy in a sustainable and reliable way.
By combining compressed gas, water, and hydraulic systems, CHEX provides a scalable solution for storing renewable energy and improving energy flexibility. The technology enables the integration of intermittent energy sources, reduces energy curtailment, and supports the development of more resilient and sustainable energy systems.
Unlike conventional battery technologies, CHEX does not require environmentally harmful chemicals to operate. By using abundant and sustainable resources, it offers a long-term solution for large-scale energy storage while creating opportunities to repurpose existing underground infrastructure.
CHEX can be adapted to different applications and storage requirements, making it a versatile technology for the future of clean energy.
Diagram of Chex’s internal workings
Advantages of Energy Storage for Energy Curtailment Problems
Applications & Advantages
CHEX Energy Storage provides a sustainable and scalable solution for the challenges of the energy transition. Its long-duration storage capacity allows renewable energy to be stored and delivered when needed, helping to reduce energy curtailment and improve grid flexibility.
With a simple design, electrical conversion efficiency above 60%, and more than 10 hours of energy autonomy, CHEX offers a reliable alternative for large-scale energy storage applications.
The technology can be scaled from 1 MW to 200 MW, making it suitable for different energy requirements, from industrial applications to grid-scale projects. By avoiding the use of chemical storage materials, CHEX generates no chemical waste or direct CO₂ emissions during operation.
For every MWh stored and recovered, the technology can contribute to avoiding approximately 300 kg of CO₂ emissions, supporting a cleaner and more sustainable energy future.