Zinc-Air Regenerative Fuel Cell System

Lowest cost of storage in the market for long-duration applications.

Resolves intermittent and unpredictable nature of renewable energy sources while completely decoupling the linkage between power and energy.

How Our Patented Technology Works


Power from the grid or renewable source is used to generate zinc particles in the Zinc Regenerator. Oxygen is released to the atmosphere as a by-product.

The zinc particles are flowed to the Storage Tank and maintained in potassium hydroxide (KOH) electrolyte until required.

Whenever power is needed, the zinc particles are delivered to the Power Stack, recombining them with oxygen to generate electricity. The zinc oxide (ZnO) by-product is returned to the storage tank for later regeneration.

20 U.S. patents issued
+ 4 more pending

Designed to meet ANSI/CAN/UL 1973, ANSI/CAN/UL 9540,
UL 9540A, NFPA 855, EN-61000 series

Proven Competitive Advantage

Unlike lithium-ion technology, which requires new stacks in order to scale, Zinc8 has completely decoupled the linkage between energy and power. This means that scaling Zinc8's technology can be accomplished by simply increasing the size of the fuel tank and quantity of recharged zinc fuel.

Capital Cost per installed kWh

Lowest cost for long-duration storage

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Technological Advantages


Zero capacity fade over extensive lifetime.


Full discharge cycles. Same performance.


Non-flammable and non-toxic.

Low Cost

Longer duration requirements, lower cost per kWh.


Energy capacity easily extended by adding larger fuel tank.


Stable supply chains for mass manufacturing.


Operating Life Hours

100+ Hours

Scalable Energy Storage

$45 / kWh

Energy capacity costs