Energy storage company Field has energised its 50MW/100MWh battery storage facility at Auchteraw near Fort Augustus, marking its largest operational project to date and its first in Scotland.
The Auchteraw site has the capacity to store enough electricity to supply around 150,000 homes for up to two hours when fully charged. It also becomes the UK’s most northerly battery energy storage asset currently in operation.
According to Field, the facility is expected to play a key role in reducing grid constraint costs, which the National Energy System Operator reported reached £1.7 billion in 2024 and nearly £1 billion in the first half of 2025.
“Bringing Auchteraw online is a major milestone for Field as our largest site yet and first in Scotland,” said Amit Gudka, chief executive of Field. “This will make a real difference for bill payers by reducing constraint costs and ensuring more of Scotland’s valuable renewable energy can be used.”
The project was delivered in collaboration with Powersystems, while engineering and infrastructure works were carried out by RJ McLeod, now part of the OCU Group.
Auchteraw is the fourth operational site in Field’s development pipeline, which includes 4.5GW of planned battery storage projects across Great Britain. Other developments include sites in South Ayrshire, near Keith, and a recently approved 200MW project in Yaxley, Suffolk.
“Every new site we deliver strengthens the UK’s energy security and makes the grid cleaner, cheaper, and more flexible,” Gudka added. “But there’s still much more to do – battery storage is essential if we’re to unlock the full potential of the energy system.
