Installing flexible electricity systems in consumers’ homes could save the UK some £6.9 billion a year by avoiding expensive network upgrades, according to a new report.

The paper by Imperial College London and OVO Energy focused on three scenarios:

? “Burning Platform”, a steady-state system that sees a grid carbon intensity of 200g per kWh, with three million electric vehicles and four million electrically-heated homes;

? “Stepping Stone”, under which progress is made on decarbonisation and a grid carbon density of 50g per kWh, with 17 million electric vehicles and 12 million electrically-heated homes;

? and “Future Survival”, billed as “one of the most ambitious low-carbon system scenarios for the UK ever conceived” through a grid carbon density of 25g per kWh, with 25 million electric vehicles and 21 million electrically-heated homes.

As well as £6.9bn in flexibility savings, the “Future Survival” scenario suggested adding smart electric vehicle charging would save £1.1bn, vehicle-to-grid charging £3.5bn, smart electric heating £3.9bn and in-home batteries £2.9bn.

Consumers as active participants

OVO Energy said: “All three scenarios consider increasing levels of electrification in transport and heat.

“The modelling shows that unleashing flexible energy at a residential level will be critical to reducing the cost of decarbonisation in the UK.

“With new technologies like electric vehicles, smart electric heat and home energy storage, consumers can actively participate and engage in the energy transition, whilst saving themselves and others, billions of pounds.”

> Download the report