Why Long-Duration Energy Storage
LDES is the linchpin of the energy transition
Achieving a net zero energy system will require significant energy storage to ensure renewable energy is available 24/7. This is projected to include up to 8 TW of LDES by 2040. When the sun sets and the wind dies down, LDES will keep the lights on. Current short-duration solutions alone cannot meet the challenge.
If we’re going to dramatically scale up global LDES deployments, these storage systems need to be safe, sustainable, flexible, and cost-effective. ESS Tech, Inc.’s (ESS’) iron flow technology is best positioned to meet those needs.
ESS is the LDES market maker
ESS is an established player in the rapidly growing LDES market and among the first manufacturers to commercialize a LDES technology in the U.S. Since 2011, we’ve developed, tested, validated, and commercialized iron flow technology to deliver flexible energy storage solutions.
ESS technology has been selected by leading U.S. and global utilities including the Sacramento Municipal Utility District and Burbank Water & Power in California, CMS Energy in Michigan, Stanwell Corporation in Australia and LEAG in Germany. These companies are pioneering the clean energy transition by deploying advanced LDES technology today.
Our iron flow battery technology has hundreds of patents pending or awarded and has been validated by third parties including the U.S. Department of Energy and global insurance leader Munich Re. In 2023, Honeywell invested in ESS and entered into a joint development agreement to drive the further development and deployment of iron flow batteries.
We maximize value with flexible storage solutions
Iron flow technology allows for unlimited cycling with zero capacity degradation over a 25-year design life. This means our solutions can be charged and discharged multiple times each day, allowing our customers to serve multiple use cases with the same asset, stacking revenue streams and optimizing the value of excess energy. Let us show you how to maximize the benefits and unique characteristics of our iron-flow battery storage solutions, the Energy Warehouse® (EW), and the Energy Center™ (EC).
The ESS cost and performance advantage
The economic opportunity for many projects is enhanced when additional cycles become possible. ESS systems deliver superior value over a 25-year project life due to lack of capacity degradation, longer asset life and unlimited cycling.
Unlimited cycling with no impact on 25-year design life.
Safe for deployment in urban areas or harsh and pristine environments.
ESS wins on sustainability
Any energy technology taking us into the future should make environmental and economic sense. ESS storage solutions are sustainable to source, build, and operate, minimizing supply chain risk and climate impact.
Secure supply chain of domestically available materials.
