The search for oil and gas has long been a source of tension between NATO allies Greece and Turkey, which have deteriorated as Ankara resumes exploration activities.
Peak wind generation is forecast at 1.5 gigawatts (GW) on Monday and 1.2 GW on Tuesday, out of a total metered capacity of around 15 GW, Elexon data showed.
Traders said demand is still weak for gas and that an increase in wind power output has led to less demand from gas-fired power plants, leaving the system oversupplied.
UK gas demand is expected to go down amid higher temperatures and stronger wind, with renewable generation forecast up on Thursday from today's low, Refinitiv analysts said in a morning note.
The UK gas system was 15.2 million cubic metres (mcm) oversupplied, with demand forecast at 155 mcm and supply at 170.2 mcm, National Grid data showed.
Peak wind power generation was expected to almost double on Friday, rising to 12.5 gigawatts (GW)
The day-ahead contract jumped by 39pc to 11.25 pence per therm by 0754 GMT.
However, gas-fo-power demand is forecast lower and there are higher nominations for UK Continental Shelf gas which might help to balance the system later in the day, trader
The capacity increase will become important once the southern natural gas pipeline that will carry Russian gas toward Europe through the Balkans becomes operational, Peter Szijjarto added.