14th July 2026
A major new battery energy storage project in Caithness has been given the final go-ahead by the Scottish Government, despite attracting significant objections during the planning process.
The decision highlights the growing importance of electricity storage as Scotland continues to expand renewable energy generation, particularly in the north of the country, where vast amounts of wind power are already produced.
The Project
Scottish Ministers have approved the Achies Battery Energy Storage System (BESS), a large-scale electricity storage facility to be built between Halkirk and Spittal in Caithness, close to the existing SSEN Spittal converter station. The project will occupy around five acres of land and include 72 battery storage units, each housed within purpose-built containers approximately 3.2 metres high. The site will connect directly into the nearby transmission network, allowing electricity to be stored when renewable generation exceeds demand and released back to the grid when needed.
Although battery storage plants do not generate electricity themselves, they are becoming an increasingly important part of Britain's energy infrastructure. As more wind farms are connected to the grid, there are periods when electricity production exceeds demand or when the network cannot carry all the available power. Battery systems can absorb that surplus electricity instead of allowing wind turbines to be switched off.
Why Was It Controversial?
The application attracted objections from a number of organisations and local residents.
The most prominent objection came from RSPB Scotland, which raised concerns about the proximity of the development to an internationally important bird site and the potential impact on protected species. Other concerns raised during the planning process included:
Possible fire risks associated with large lithium-ion battery installations.
Visual impact on the rural landscape.
Increased construction traffic.
The cumulative effect of more energy infrastructure being concentrated in Caithness.
The continuing industrialisation of the countryside.
Supporters of the scheme argued that modern battery installations are designed with extensive fire protection systems, remote monitoring and strict safety standards. They also pointed out that the site was deliberately chosen because of its immediate proximity to major grid infrastructure, reducing the need for long new power lines.
Why Ministers Approved It
In granting consent, Scottish Ministers concluded that the national benefits outweighed the local impacts.
Battery storage has become an essential component of Scotland's energy strategy. Wind generation can change dramatically within minutes as weather conditions vary. Without sufficient storage or flexible demand, surplus electricity has to be curtailed, meaning wind farms are effectively paid to stop generating.
Large battery systems help to:
store excess renewable electricity;
improve grid stability;
reduce the need to curtail wind farms;
provide rapid backup during periods of high demand; and
make better use of existing transmission infrastructure.
As Scotland moves towards its target of net zero greenhouse gas emissions by 2045, projects such as this are increasingly viewed as nationally significant infrastructure.
Another Sign of Caithness' Changing Role
For many years Caithness was known primarily for Dounreay and nuclear research.
Today the county is rapidly becoming one of the UK's most important energy hubs.
Alongside existing and proposed offshore wind developments, new transmission links, the Spittal converter station, and future projects linked to green hydrogen and marine renewables, battery storage is becoming another piece of an increasingly complex energy network.
While each development may appear modest on its own, together they represent a major transformation in the area's role within Britain's electricity system.
The Debate Is Unlikely to End
The approval is unlikely to end the wider debate over how much energy infrastructure rural communities should be expected to host.
Many residents support renewable energy but question whether counties like Caithness are carrying a disproportionate share of the infrastructure needed to decarbonise the UK's electricity system. Others argue that if Scotland is serious about expanding renewable energy, then facilities such as substations, battery storage and transmission links are unavoidable.
It also raises an important question for local communities.
If Caithness is becoming one of Britain's energy powerhouses, how can local people ensure that the economic benefits—through jobs, investment and community funding—keep pace with the growing number of nationally significant energy projects being built on their doorstep?
That may become one of the defining issues for the county over the next decade.