“This Earth Could Power Cities”: Scientists Transform Ground Into Giant Battery To Revolutionize Energy Storage

The quest for sustainable and reliable energy storage solutions has never been more critical as the world shifts towards renewable energy sources. While technologies like lithium-ion batteries provide short-term energy storage, there is an urgent need for solutions capable of storing energy for months. Traditional methods like pumped hydropower have long dominated the landscape, but they come with limitations. A Texas-based company, Quidnet, has introduced an innovative approach called Geochemical Energy Storage (GES), which promises to revolutionize long-term energy storage by using less water and offering a more adaptable solution.

The Rise of Pumped Hydropower

For over a century, pumped hydropower has been the cornerstone of long-term energy storage. This method involves pumping water uphill when energy is abundant and releasing it downhill through turbines to generate electricity when demand rises. Its simplicity and efficiency made it a preferred choice, representing 95 percent of long-duration storage in the United States. However, this method is not without its drawbacks. Significant upfront costs, geographical limitations, and substantial water usage pose challenges to its widespread adoption.

Pumped hydropower’s reliance on specific geographical features limits its application to regions with suitable topography. This geographical constraint, combined with the increasing demand for sustainable energy solutions, underscores the need for innovative approaches in energy storage. As we strive to mitigate the impacts of climate change, finding adaptable and efficient storage systems becomes imperative.

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Introducing Geochemical Energy Storage

Quidnet’s Geochemical Energy Storage (GES) offers a groundbreaking alternative to traditional pumped storage. By injecting water into impermeable rock formations under pressure, GES creates a closed-loop system that efficiently stores energy. When energy is needed, the pressurized water is released, powering turbines and generating electricity. This innovative approach flips the concept of pumped storage on its head by utilizing the Earth’s geology to store energy safely and sustainably.

The closed-loop nature of GES significantly reduces water usage compared to conventional methods. Quidnet states that the water used in GES is repeatedly cycled, minimizing losses due to evaporation. This efficiency makes GES an attractive option for regions where water scarcity is a concern, potentially broadening the scope of long-term energy storage across the United States.

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Funding and Development Milestones

Quidnet’s innovative approach has garnered attention and support from various stakeholders. In 2019, the company received funding from the U.S. Department of Energy to advance GES technologies for commercial use. Additionally, a $10 million investment from Hunt Energy Network in 2024 further propelled the development of GES systems. This support highlights the growing recognition of GES as a viable solution for long-term energy storage.

By February 2025, Quidnet successfully demonstrated its technology at a megawatt-hour scale and announced the ability to store energy for six months without losses. This achievement marks a significant milestone in the evolution of energy storage technologies, promising to enhance the resilience of renewable energy grids and contribute to a more sustainable future.

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Challenges and Future Prospects

While GES shows great promise, challenges remain on the path to widespread adoption. The system’s efficiency, estimated by Quidnet CEO Joe Zhou to reach a maximum of 65 percent, indicates room for improvement. However, in the context of long-term storage, where lithium-ion and iron-air batteries dominate short-term solutions, these efficiency levels remain commercially viable.

As climate change continues to increase the frequency and severity of climate-related events, long-term energy storage becomes crucial for maintaining grid stability. Quidnet aims to have a GES project operational with a Texas utility by next year, paving the way for broader implementation. The potential of GES to revolutionize energy storage and contribute to a resilient renewable energy grid offers hope for a sustainable future.

The introduction of Geochemical Energy Storage by Quidnet marks a significant step forward in the quest for efficient, sustainable energy solutions. As the world continues to grapple with the impacts of climate change, innovations like GES offer a promising path toward a more resilient energy grid. How will energy storage technologies continue to evolve to meet the growing demands of a renewable energy future?

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