UK Power Reserve (UKPR) has awarded the second phase of its battery-based energy storage portfolio contracts to Fluence, a Siemens and AES company.
Established this year as the successor to AES Energy Storage and Siemens energy storage, Fluence offers energy storage technology solutions to customers.
In addition to the existing 60MW of battery storage projects, a new 60MW battery storage plant will be built using Fluence’s Advancion platform.
Fluence’s technology will be used to provide flexibility to the UK grid and accommodate increasing levels of renewable generation.
The partnership between UKPR and Fluence for its full 120MW portfolio is reported to be the largest contracted energy storage portfolio transaction globally to date.
Fluence CEO Stephen Coughlin said: “UK Power Reserve is a leading force in modernising the UK’s electric infrastructure and we are delighted to expand our partnership.

US Tariffs are shifting - will you react or anticipate?
Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.
By GlobalData“Fluence’s battery-based energy storage technology is designed to enable cleaner, more reliable and more resilient electric service in the UK’s rapidly changing market.
“By combining our ability to deliver robust solutions at this scale with UK Power Reserve’s deep market expertise, these projects will be ready to provide ongoing value for the UK grid and its consumers in less than a year.”
The battery storage sites are slated to become operational by 2020, with the entire portfolio expected to go online by next year.