Great Britain's energy system operator has said there could be "tight days" for energy supply over winter but stressed that new battery storage will help to meet national demand.The National Energy System Operator (Neso) indicated that imported electricity supply from Europe could be used "when required" to help power homes and businesses.

Great Britain's energy system operator has said there could be "tight days" for energy supply over winter but stressed that new battery storage will help to meet national demand.The National Energy System Operator (Neso) indicated that imported electricity supply from Europe could be used "when required" to help power homes and businesses.