Tag: pumped storage

Why investors are flocking to the energy powerhouse that is Scotland

This article first appeared in The Scotsman. 

The conversation about energy is often framed as a choice: security or affordability, climate ambition or economic growth, urgent action or long-term planning. But that is a false divide. Households, businesses and communities want a power system that is dependable, affordable, and capable of supporting a lower-carbon future.

That was reflected in the recent Scottish Parliament debate, “It’s Scotland’s Energy”, which underlined the growing importance of the subject to the country’s economic future, and increasingly its politics. The debate may have taken place in Holyrood, but the issues it raised matter for all the UK.

Scotland is exceptionally well placed to help solve the UK’s energy challenges. As Britain’s electricity system evolves, long-term investment is increasingly flowing to the places with the renewable resources, engineering capability and network infrastructure to support a more flexible power system. Scotland stands out on all three, and this is being recognised by investors.

Late last year,  ScottishPower announced plans to invest up to £12 billion to transform the grid, and SSE announced it was generating £3.4bn for Scotland’s economy as it delivers on its five-year investment plan.

Scotland’s strengths

Scotland has been central to Britain’s energy story for decades. With abundant renewable resources, a resilient and modern grid, and deep engineering expertise, Scotland has established itself as a true energy hub.

In 2025, Scotland generated record levels of renewable energy, while continuing to export surplus power to the rest of the UK. Its position as an energy powerhouse means it is also home to a highly skilled workforce with generational expertise.

Alongside the dedicated workforce, Scotland’s unique geography and heritage offer significant structural advantages. It’s home to some of Europe’s strongest offshore wind resources, with considerable opportunities for future development. It has long been at the heart of Britain’s hydroelectric industry and remains home to many of the UK’s most important, long-duration energy storage assets.

These technologies may not always attract the same attention as nuclear power or solar parks, but they will be essential to delivering a reliable, low-carbon power system.

Bringing greater stability to the National Grid

Generating renewable power is only one piece of the energy transition puzzle. As more wind and solar power comes online, and as transport, heating and industry continue to electrify, Britain’s electricity system will need to manage rising demand while balancing increasingly variable sources of generation.

Developing a reliable system under these conditions requires technologies capable of responding quickly and flexibly to today’s demands. This means long-duration storage technologies such as pumped-storage hydro and battery energy storage systems, or BESS, will play an even more central role in the transition.

These solutions allow the grid to respond more effectively to supply and demand fluctuations, while aiding long-term system stability. In fact, the National Energy System Operator has identified long-duration energy storage as a critical component of delivering a secure, decarbonised electricity system by 2035.

However, storage alone is not enough to solve the challenge. We also need significant investment in transmission infrastructure capable of moving renewable electricity. As Scotland’s capacity continues to expand, strengthening connections between the regions and nations is also important, lowering system costs and ensuring power can reach homes and businesses across the country.

Reducing exposure to shocks

Recent memory tells us we can’t take energy security for granted. The global gas crisis triggered by Russia’s invasion of Ukraine exposed the vulnerabilities that can emerge when energy systems lack resilience. Even today, UK industrial electricity prices remain among the highest in Europe, creating challenges for competitiveness, manufacturing and investment.

Scotland has worked to create an environment that encourages sustained, long-term investment. Recently, the Scottish Government committed to invest up to £500 million over five years to support offshore wind infrastructure, manufacturing and supply chains. Additionally, the UK Government’s National Wealth Fund, Great British Energy and the Scottish National Investment Bank backed the development of the Pentland Floating Offshore Wind Farm, which could power up to 70,000 homes.

Last month, I saw first-hand how Scotland’s energy assets are supporting the whole of the UK. I visited colleagues at Drax’s Cruachan Power Station in Argyll, which this year celebrated its 60th anniversary, and where we are investing £80m in a refurbishment programme designed to increase generating capacity and strengthen the long-term role of pumped storage hydro in Britain’s electricity system.

At Glenlee in Dumfries and Galloway, which has been generating renewable power for almost 90 years, we  installed solar panels at our plant, making it the first of eight planned solar projects across our Scottish hydro assets. In the wider sector, projects such as Zenobē’s Coalburn battery storage facility demonstrate growing confidence in Scotland’s role as a centre for large-scale energy storage and grid innovation.

The value of investments like these extends far beyond the energy system itself. They support jobs, strengthen local supply chains and generate opportunities for communities. Scotland’s energy strength isn’t just beneath the seabed or in the wind, it’s in its people.

Too often, the energy debate is framed as a choice between competing priorities. In reality, energy security, affordability and decarbonisation depend on one another. Getting them right will help deliver a stronger economy and a more resilient future.

Our shared ambitions require continued support, but investment in the necessary infrastructure is already underway. This is particularly true in Scotland, which will have a pivotal role in helping Britain deliver that future.

The opportunity to strengthen Britain’s energy security, support economic growth and accelerate the transition to a lower-carbon power system is significant – and so is the responsibility to deliver it.

The next PM must move fast to unlock investment in long duration energy storage

For many years energy security was an issue resolved by complex, continent-wide gas pipelines which stretched from Russia into the heart of Europe.

We now know this reliance on Russian gas didn’t strengthen Europe’s energy security – in fact it weakened it.

The UK is less reliant on foreign gas than many countries in Europe in part due to the renewables revolution which has transformed our energy system over the last decade.

The rollout of biomass, wind and solar power has enabled the UK to decarbonise its power grid at a faster rate than any other major economy. And in order to reduce energy bills in the years ahead we need to have more clean, green, renewable power, which is generated in the UK for the UK.

Getting more green energy onto the grid can only be achieved through partnerships between government and private companies. For businesses like Drax, that means having the right policies now, to make large-scale investment decisions for the future, in vital green energy technologies like pumped storage hydro and bioenergy with carbon capture and storage (BECCS).

Drax has submitted planning applications for two major infrastructure projects designed to deliver both of these vital technologies in the 2020s. They form part of a £3bn investment strategy which Drax stands ready to implement this decade, underlining the company’s significant role as a growing, global business at the heart of the green energy transition.

Alongside strengthening the UK’s long-term energy security, these projects will support thousands of jobs and provide a real opportunity for economic growth.

Engineers at Cruachan Power Station

We aim to double the capacity of our Cruachan pumped hydro storage facility in Scotland, supporting energy security and further decarbonisation of the grid, at lower costs.

Over the last two years, due to bottlenecks on the transmission system and a lack of energy storage capacity, enough wind power to supply 800,000 homes each year with renewable electricity, went to waste.

As household bills and global temperatures continue to rise, we can’t afford to let renewable power go to waste like this. We need more storage to harness the wind power available now, as well as the increased capacity being developed the coming years.

The only proven grid scale technology that can store vast quantities of energy for long durations is pumped storage hydro. Sites like Cruachan act like giant water batteries, using excess power from the grid to pump water to an upper reservoir where it is stored, before re-releasing it to generate electricity.

While the UK’s policy and market support mechanisms have evolved to support new build renewables, the current framework isn’t suitable for pumped storage projects that can have a lifespan of many decades.

Drax’s plans would enable more homegrown renewable power to come online to strengthen the UK’s energy security and lower carbon emissions. This additional capacity could be available within eight years.

To secure private investment in these projects, get shovels in the ground and work underway, developers need to know the policy environment they will be operating in.

Abandoning or delaying net zero will not save the country money, it will increase our reliance on foreign gas, leaving households at the mercy of international markets which no UK government can control.

Find out more about Cruachan 2 here.

In Scotland alone there is more than 4.3 GW of storage projects in planning or awaiting construction – this is enough capacity to power around three million homes.

Drax, alongside the developers of some of these other projects, has put forward plans for policies which would create the certainty needed to incentivise investment and kick start work to build the storage capacity this country needs for energy security.

These include introducing a cap and floor regime – the same support mechanism which was instrumental in the successful roll-out of interconnectors in Britain.

I urge the new Conservative Party leader to make the government’s response to these proposals a priority, as part of the package of measures needed to bolster the UK’s long term energy security and to bring the longer-term cost of energy down.

With the right policies to unlock investment, the UK can lead the world in energy storage technologies which are urgently needed to keep the lights on, cut carbon emissions and keep us on track to reach net zero.

This article was first published by Business Green