Energy storage

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The Association for Renewable Energy and Clean Technology (REA) has written to ministers at the Treasury and the Department for Business, Energy and Industrial Strategy to petition for a cut to the VAT rate for domestic energy storage. The trade body also urged the ministers to introduce a temporary financial incentive for households to install storage, perhaps through the recently extended Green Homes Grant scheme.
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Gridserve has opened the first of 100 “Electric Forecourts” the company plans to build over next five years at Braintree in Essex. The station has the capacity to charge 36 electric vehicles at the same time at rates of up to 350kW.
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The UK’s largest battery storage system to date, with a maximum power output of almost 50MW and a storage capacity of 75MWh, has begun operating at Thurcroft in South Yorkshire. The facility is owned by Gresham House Energy Storage Fund and is being traded in wholesale and balancing services markets by Flexitricity.
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At a roundtable event organised by Network in association with National Grid, delegates were invited to consider how localised energy supports the whole energy system.
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Latest in Energy storage

Locational electricity pricing could save £30 billion – or £1,000 per household – by 2035, according to a new study from Energy Systems Catapult and Octopus Energy. The report said the current market arrangements were designed for an energy system dominated by large, centralised generators and “no longer makes sense”, resulting in a “growing tension between the wholesale market and physical reality”.
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Octopus Energy Group has given financial backing to a project to import solar and wind power from Morocco via the world’s longest subsea interconnectors. Developer Xlinks is planning to build 7GW of solar farms, 3.5GW of wind farm and 5GW/20GWh of battery storage in a patch of desert in the south of Morocco, and import the power generated back to the UK through two 1.8GW interconnectors.
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UK Power Networks has announced it is launching a £13 million flexibility tender for 292MW of power at 113 different sites across its region. The tender, hosted on the network operator’s Piclo Flex platform, includes locations with early start dates up to four weeks after arrangements are made.
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The UK has committed to stretching targets on renewable generation. However, less attention has been given to the end state – the operation of a fully decarbonised energy system. In this article for Utility Week, Energy Systems Catapult’s Beth Warnock discusses the urgent need to find replacements for the stores of fossil fuels our energy system currently relies on.
Opinion
New research from Renewable UK has revealed the pipeline of UK battery storage projects has doubled in the last 12 months. The trade body’s EnergyPulse Energy Storage report shows the total pipeline of battery projects has swelled from 16.1GW a year ago to 32.1GW.
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The time it takes to plan and build onshore wind farms could be slashed from nearly a decade to less than a year, Octopus has told the government. The supplier blames the bulk of the delay in commissioning projects on securing planning consents and grid connections.
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Greater scarcity and higher, more volatile prices in power markets are bringing a shift towards longer-duration battery storage, according to a new report from LCP. The consultancy highlighted the growing importance of revenue stacking as frequency response markets become saturated and wholesale, balancing and capacity markets more lucrative.  
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The Department for Business, Energy and Industrial Strategy (BEIS) has granted £6.7 million to 24 projects for the first phase of its £68 million Longer Duration Energy Storage Demonstration competition. Five projects have been awarded funding to support actual demonstration projects under stream one, whilst a further 19 projects been allocating funding to support prototype projects under stream two.
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The cap and floor mechanism, which is used to finance interconnectors, should be adapted to stimulate an eight-fold increase in long-duration electricity storage capacity that the UK will need by 2035, Aurora Energy Research has urged. In a new study, the consultancy said up to 24GW of long-duration storage, which can store electricity for four hours or more, will required by then to ensure continuity of supply as the electricity system becomes increasingly reliant on intermittent solar and wind power.
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Scottish and Southern Electricity Networks (SSEN) and Eon have announced a pilot battery scheme designed to improve electricity resilience in remote and rural areas. The resilience as a service project involves using battery storage to restore and maintain power swiftly and automatically in the event of a fault in locations that experience a higher number of power outages.
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