Duke Energy Tests New Battery Technology

Duke Energy testing hybrid ultracapacitor-battery energy storage system (HESS)

Duke Energy is testing a new battery technology at its Rankin Substation in Gaston County, North Carolina. 

The hybrid ultracapacitor-battery energy storage system (HESS) will demonstrate extended operational life, rapid response, real-time solar smoothing and load shifting.

“With so many solar installations in North Carolina, we must look for innovative ways to better incorporate renewable energy into our system and still provide reliable service at a competitive price for our customers,” said Thomas Golden, technology development manager for Duke Energy.

A distribution line at the substation has a 1.2-MW solar installation connected a mile away, and Golden says managing and maintaining grid-connected renewable installations is critical.

Aquion Energy supplied battery technologies and associated engineering services and Win Inertia provided its hybrid energy storage system (SHAD®).

The 100-kW/300-kWh battery uses an Aqueous Hybrid Ion chemistry, including a saltwater electrolyte and synthetic cotton separator, which should result in lower costs and provide a non-toxic, non-combustible product that is safe to handle and environmentally friendly.

The HESS uses fast-response ultracapacitors (UCAPs) from Maxwell Technologies to manage solar smoothing events in real-time, particularly when solar power fluctuates due to weather.  UCAPs reduce heat stress on the battery, minimizing degradation.


Did You Like this Article? Get All the Energy Industry News Delivered to Your Inbox

Subscribe to an email newsletter today at no cost and receive the latest news and information.

 Subscribe Now


Making DDoS Mitigation Part of Your Incident Response Plan: Critical Steps and Best Practices

Like a new virulent strain of flu, the impact of a distributed denial of service (DDoS) attack is...

The Multi-Tax Challenge of Managing Excise Tax and Sales Tax

To be able to accurately calculate multiple tax types, companies must be prepared to continually ...

Operational Analytics in the Power Industry

Cloud computing, smart grids, and other technologies are changing transmission and distribution. ...

Maximizing Operational Excellence

In a recent survey conducted by PennEnergy Research, 70% of surveyed energy industry professional...