Giant Water Battery Will Help Scotland Hit Net Zero

Via EuroNews, a report on a giant water battery inside a mountain which will help Scotland hit net zero:

The Scottish government has given the green light to expand a hydro storage plant in the west of the country.

Renewable power developer Drax wants to build a new £500 million (€581 million) development in their existing Cruachan facility.

Authorities have approved the plans, which will also help Scotland in its bid to reach net-zero targets.

But the power company says UK government policy needs to change before construction begins to make the project attractive to investors.

A giant water battery in Scotland

Located in the area of Argyll, Drax’s underground power station is housed in a vast cavern excavated from inside the mountain Ben Cruachan.

The subterranean station has become known as ‘Hollow Mountain’.

The Cruachan plant was inaugurated in 1965 becoming the first large-scale reversible turbine storage energy scheme of its kind around the globe.

Pumped storage power plants, also known as water batteries, are a kind of hydroelectric energy storage. The plant comprises two large water reservoirs located at different heights.

Turbines pump water from the lower pool to the upper to ‘charge’ the battery and store energy.

When electricity is needed, the water is released and the flow rotates a turbine which generates hydroelectric power.

A £500M expansion project is the first in a generation

Cruachan plant owner Drax now plans to carry out a 600-megawatt expansion, for which it has received government approval.

“This is a major milestone in Drax’s plans to build Britain’s first new pumped storage hydro plant in a generation,” says chief executive Will Gardiner.

He added that, given the right support from the state, investments would see the generating capacity of the station more than double.

Huge investments are needed for an expansion, which is expensive to build and takes between five and eight years to complete.

Scotland aims to become net-zero

While visiting Cruachan, First Minister Humza Yousaf said the expansion scheme was an important step in helping the country meet net-zero targets.

“The Scottish government will continue to urge the UK government to provide an appropriate market mechanism for hydropower and other long-duration energy storage technologies, to ensure that the potential for hydropower is fully realised,” he said.

The British government says it has already secured billions of pounds worth of green investment.

“Our plans to power up Britain are expected to attract a further £100bn investment and support 480,000 jobs across the UK, including Scotland, by 2030,” a spokesperson told the BBC.

“Pumped hydro storage will help deliver greater energy security and economic growth and we have already confirmed our intention to enable investment in these technologies while removing regulatory barriers.”

Hydropower will ‘ensure energy security’ for Scotland

Trade body Scottish Renewables said the expansion to the hydro plant and other projects of its kind would be integral to ensuring energy security and lowering energy bills.

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About This Blog And Its Author
As the scarcity of water and energy continues to grow, the linkage between these two critical resources will become more defined and even more acute in the months ahead.  This blog is committed to analyzing and referencing articles, reports, and interviews that can help unlock the nascent, complex and expanding linkages between water and energy -- The Watergy Nexus -- and will endeavor to provide a central clearinghouse for insightful articles and comments for all to consider.

Educated at Yale University (Bachelor of Arts - History) and Harvard (Master in Public Policy - International Development), Monty Simus has held a lifelong interest in environmental and conservation issues, primarily as they relate to freshwater scarcity, renewable energy, and national park policy.  Working from a water-scarce base in Las Vegas with his wife and son, he is the founder of Water Politics, an organization dedicated to the identification and analysis of geopolitical water issues arising from the world’s growing and vast water deficits, and is also a co-founder of SmartMarkets, an eco-preneurial venture that applies web 2.0 technology and online social networking innovations to motivate energy & water conservation.  He previously worked for an independent power producer in Central Asia; co-authored an article appearing in the Summer 2010 issue of the Tulane Environmental Law Journal, titled: “The Water Ethic: The Inexorable Birth Of A Certain Alienable Right”; and authored an article appearing in the inaugural issue of Johns Hopkins University's Global Water Magazine in July 2010 titled: “H2Own: The Water Ethic and an Equitable Market for the Exchange of Individual Water Efficiency Credits.”