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Millions of households are being brought into the core of Britain’s electricity system after a quiet but significant rule change removes a key barrier to participation.
The National Energy System Operator has scrapped restrictive metering requirements, allowing homes and businesses with electric vehicle chargers, heat pumps or batteries to take part in balancing the grid, a role that has historically been reserved for large generators.
The shift reflects how quickly the system is changing as renewables grow and electricity demand rises, with flexibility now seen as essential to keeping costs down and maintaining stability.
NESO CEO Fintan Slye said: “Abolishing outdated metering requirements… is an exciting and historic milestone in the way Britain is powered,” adding it will allow the system to “utilise aggregated assets instead of switching on more expensive power stations, reducing costs for everyone.”
In practice, this means everyday technologies can respond automatically to conditions on the grid.
When renewable output is high, devices can increase consumption or store surplus electricity, while at times of peak demand they can reduce usage or export energy back, with households rewarded through lower bills or incentives.
Energy Minister Martin McCluskey said: “This change will help even more consumers benefit… bringing down their bills by using electricity flexibly.”
Britain has already tested demand flexibility through national schemes with nearly 2 million households but those programmes were limited in scope and frequency.
The latest reforms go further by opening up the Balancing Mechanism itself, enabling smaller assets to respond in near real time alongside traditional power stations.
For the system operator, this creates a more responsive and lower cost network, while for industry it opens a new market for aggregators and energy tech firms looking to bundle thousands of small assets together.
As the system electrifies and decentralises, the role of consumers is shifting from passive users to active participants in how electricity is generated, stored and used across the network.
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