Welsh EFR battery project operational

Vattenfall has overcome some engineering difficulties to complete its 228 MW Enhanced Frequency Response (EFR) battery storage facility in Wales.

The battery@pyc project has been completed at the 228 MW Pen y Cymoedd onshore wind farm, making it the largest battery to be co-located at such a site.
Vattenfall logo
Vattenfall’s battery@pyc is one of eight projects to have won an Enhanced Frequency Response (EFR) contract back in 2016, and is only the fourth to have been publically confirmed as operational following announcements from E.On in October and VLC Energy earlier this year.

Current Online reports that the company had to overcome challenges associated with it being a battery prototype.

“The co-location battery prototype at PyC presented fascinating electrical engineering challenges. Solving these challenges provided us with a great learning experience which we will take to our next installation,” Nick Entwistle, Vattenfall’s battery@pyc construction project manager.

“The challenges did mean that we amended our schedule ” agreed with National Grid ” and included more difficult than expected ground conditions, bad weather on site and integrating the battery into the windfarm’s electrical network.”

Now operational, the battery is believed to be the largest in the UK to have been co-located with an onshore wind farm, sharing the electrical infrastructure of the 76 turbine site, generating 228MW.

Claus Wattendrup, head of business unit Solar & Batteries, said: “This is Vattenfall’s largest battery installation to date, where we make use of synergies at our existing wind farms sites ” such as at Pen y Cymoedd or the Princess Alexia Wind Farm in the Netherlands. Hybrid renewable parks will play a larger role in the future and we are leading this development.”

The site uses batteries previously destined for BMW i3 electric vehicles that will now be used to help National Grid maintain frequency levels and reliability of electricity supply on the GB transmission network.

With the EFR battery now successfully completed, Vattenfall has suggested that it will seek out similar projects globally, with the head of Vattenfall’s wind business Gunnar Groebler previously praising the flexibility of battery technology in providing certainty over the business case for such projects in the future.

No posts to display