Climate Emission Killer

Updated: Jun 29, 2020

Construction begins on world’s biggest liquid air battery in northern England.


Work has started on building the world’s largest liquid air battery, located near Manchester.

It's an ingenious concept with two objectives. It will store renewable electricity and reduce carbon emissions from fossil-fuel power plants by using excess green energy to compress air into a liquid and store it. When demand is higher, the liquid air is released back into a gas, powering a turbine that puts the green energy back into the grid.


The battery's big trick is filling in the gaps when wind or solar energy isn't available, such as calm days and night time. Storage is therefore key and the new project will be the largest in the world outside of pumped hydro schemes, which require a mountain reservoir to store water.


The new liquid air battery, being developed by Highview Power, is due to be operational in next year and will be able to power up to 200,000 homes for five hours, and store power for many weeks. This long term storage of power is the project's other big trick, as existing chemical batteries can only store relatively small amounts of electricity for short periods.


Liquid air batteries can be constructed anywhere, said Highview’s chief executive, Javier Cavada: “Air is everywhere in the world. The main competitor is really not other storage technologies but fossil fuels, as people still want to continue building gas and coal-fired plants today, strangely enough,” he said.


The UK government has supported the project with a £10m grant. The energy and clean growth minister, Kwasi Kwarteng, said: “This revolutionary new facility will form a key part of our push towards net zero, bringing greater flexibility to Britain’s electricity grid and creating green-collar jobs in Greater Manchester. Projects like these will help us realise the full value of our world-class renewables, ensuring homes and businesses can still be powered by green energy, even when the sun is not shining and the wind not blowing.”

Governments around the world are being urged to make the economic recovery from the coronavirus pandemic a green one. And it's generally acknowledged that this is a once in a lifetime opportunity to do so. In the UK, the prime minister said “We owe it to future generations to build back better,” while the chancellor, Rishi Sunak, is reported to be planning a “green industrial revolution”.


Across the channel, the EU commission president, Ursula von der Leyen, eloquently phrased it as: “Sooner or later we will find a vaccine for the coronavirus. But there is no vaccine for climate change. Therefore [we] need a recovery plan designed for the future."


Alex Buckman, an energy storage expert at the Energy Systems Catapult Group, said: “There is likely going to be a need for one or more of the medium-to-long duration electricity storage technologies to fill a gap in the market, and liquid air energy storage is right up there as an option,” he said.


The Highview battery will store 250MWh of energy, almost double the amount stored by the biggest chemical battery, built by Tesla in South Australia. The new project is sited at the Trafford Energy Park, also home to the Carrington gas-powered energy plant and a closed coal power station.


The project will cost £85m, and Highview received £35m of investment from the Japanese machinery giant Sumitomo in February. The liquid air battery is creating 200 jobs, mainly in construction, and employing former oil and gas engineers, with a few dozen in the continuing operation. The plant’s lifetime is expected to be 30-40 years. “It will pass to the next generation,” said Cavada.


Highview is developing other sites in the UK, continental Europe and the US, but the Manchester project will be the first. “The first one is definitely the most important and this is why we really value the UK government’s bold move to use UK technology to solve UK problems and afterwards export the tech globally,” said Cavada.



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