Why should you choose ESS Iron Flow batteries?

Incorporating easy-to-source iron, salt, and water, ESS iron flow batteries stand out as the safe and sustainable LDES solution. Our technology is engineered for flexibility and scale to meet demand peaks and intermittency periods with no degradation or capacity fade, enabling energy security and resilience.

What is ESS Iron Flow Technology?

Using easy-to-source iron, salt, and water, ESS iron flow technology enables energy security, reliability and resilience. We build flexible storage solutions that allow our customers to meet increasing energy demand without power disruptions and maximize the value potential of excess renewable energy.

Are ESS batteries safe?

ESS batteries are easy to site and safe to operate. Iron flow chemistry doesn’t use critical minerals such as vanadium, lithium, or cobalt, reducing the environmental impacts associated with the supply chain and reducing their lifecycle greenhouse gas footprint.

Are ESS batteries recyclable?

Substantially recyclable or reusable at end-of-life. ESS iron flow batteries reduce the need for fire suppression equipment, secondary containment, or hazmat precautions. ESS systems are substantially recyclable at end-of-life.

How do Iron Flow batteries work?

Our iron flow batteries work by circulating liquid electrolytes — made of iron, salt, and water — to charge and discharge electrons, providing up to 12 hours of storage capacity. ESS has developed, tested, validated, and commercialized iron flow technology since 2011.

What is ESS iron flow chemistry?

ESS has developed, tested, validated, and commercialized iron flow technology since 2011. While conventional battery chemistries deliver a 7- to 10-year lifecycle before requiring augmentation, ESS iron flow chemistry delivers 25+ years and unlimited cycling with no capacity fade or degradation. Why LDES? Learn More