New flow battery tech for large-scale renewable energy storageS. Himmelstein | November 30, 2021
Duke Energy plans to test a new flow battery technology developed by Honeywell that works with renewable generation sources to meet the demand for sustainable energy storage. The 400 kWh unit will be evaluated at the utility’s Emerging Technology and Innovation Center in Mount Holly, North Carolina, in 2022.
Honeywell claims its new flow battery is safe, cost-effective and provides long-duration energy storage compared to other technologies available on the market. The system battery uses a non-flammable electrolyte that converts chemical energy to electricity to store energy for later use. The technology can store and discharge energy for up to 12 hours; available lithium ion batteries can discharge only up to four hours. This development can enable utilities to store energy during times when renewables generation is high to meet demand during peak periods.
The battery is also assembled with recyclable components and does not degrade over time. It maintains system performance, providing a reliable and cost-efficient system for 20 years.
Duke Energy plans to achieve a 50% reduction of carbon emissions relative to 2005 levels by 2030 and realize net-zero carbon emissions by 2050. Its pursuit of a clean energy strategy also calls for deploying about 400 MW of battery storage capacity in its service territory.