The unusually warm weather has resulted in around 30 per cent less wind generation in June and July compared to the same time last year.

Figures from National Grid show the decrease between 4 June and 15 July.

SSE published its Q1 trading update yesterday (19 July) which stated poorer than average wind conditions resulted in output from both onshore and offshore windfarms being around 15 per cent lower than expected.

Overall operating profits for the company during the first quarter of the year were “negatively impacted” by £80 million, largely due to the unusual weather conditions.

Emma Pinchbeck, executive director of Renewable UK, said new initiatives are making wind generation more flexible, helping to respond to fluctuations in demand.

She said: “Wind is already generating 15 per cent of the UK’s annual electricity needs and that’s set to grow exponentially in the years ahead.

“Technical innovation is moving fast – just last month we saw the official launch of a battery storage system at a Scottish offshore windfarm; initiatives like this make wind more flexible, helping to respond to fluctuations in demand.

“National Grid can predict with pinpoint accuracy how much electricity will be generated from wind 24 hours in advance. We need a wide variety of energy sources competing against each other to ensure that consumers get best value for money.”

National Grid says electricity demand is low and a spokesperson said the system operator is comfortable with the level of spare generation available.

In total wind power made up just 9.2 per cent generation so far in June and July, with gas making up the most with 43.4 per cent.

Nuclear generated the second most power with 23.4 per cent while solar accounted for 7.9 per cent.

A spokesperson said: “Our forecasts for renewable generation are becoming increasingly accurate, allowing the electricity market to prepare for days when output from any generator type may be lower than usual and provide an alternative fuel type.

“As we continue to transition to a low-carbon energy system, managing the intermittency of renewable power is an important role in balancing supply and demand. However, we have planned for these changes and are ready to play our part.”