// BBC BUSINESS NEWS — FINANZA
Grid operator says lights will stay on this winter after concerns
The body in charge of Britain's electricity network has given assurances that the lights will stay on this winter after concerns were raised by some of its engineers.
The National Energy System Operator (NESO) said the country's electricity system was prepared and "resilient to the challenges it may face" during the colder months.
However, its winter outlook report comes after an independent investigation found engineers had "high levels of stress and concern" about their ability to ensure adequate supply due to differences between renewable and gas-fired power generation.
NESO said supplies were expected to remain secure throughout the winter, though warned there could be "tight days".
It added that such days would result in it deploying notices to power producers that additional electricity generation may be needed. It said such an announcement was not a warning of power cuts and was routine.
"While we never take resilience for granted, households and businesses can be confident that Great Britain's electricity system remains secure, reliable and among the most resilient in the world," said Deborah Petterson, director of whole energy system resilience at NESO.
In a separate report, National Gas, a private company that owns and runs the country's gas network, and is separate from NESO, said it expected to have sufficient supply to meet demand this winter, but forecast gas for power generation to increase at peak demand due to the "intermittent" nature of renewables.
The release of the two reports comes as Britain's energy generation and security falls under increasing scrutiny, given the wars in the Middle East and eastern Europe have pushed prices up and sparked supply fears.
The country's electricity is generated from a wide range of sources, including renewables such as solar and wind, as well as more traditional gas-fired and nuclear power stations.
Wind power was the largest generator of electricity in Britain last year, accounting for almost 30% of all power, marginally above gas.