UK GAS-Prices fall on more supply, high winds

LONDON, Oct 9 (Reuters) - British wholesale gas prices tumbled on Wednesday despite chillier weather boosting heating demand as supplies increased from the North Sea and high wind generation dampened gas-for-power demand.

* Day-ahead gas fell 1.3 pence to 24.00 pence per therm by 0740 GMT.

* Within-day gas fell 1.65 pence to 24.00 p/therm.

* The system was a bit oversupplied with demand forecast at 179.1 million cubic metres (mcm) and supplies seen at 184.2 mcm, National Grid data showed.

* Temperature forecasts were reduced for Wednesday by 1.7 degrees Celsius to 10.9 degrees, prompting a 13 mcm increase in residential gas demand to 124 mcm.

* Still, the gas system was being pushed into oversupply.

* Gas-for-power demand is low at 40 mcm compared to levels of between 50 and 60 mcm last week.

* Peak wind generation is expected to be over maximum metred capacity at 12.22 gigawatts (GW) compared to 12.05 capacity.

* Strong wind generation tends to reduce demand for gas used in power generation.

* Norwegian gas flows were around the same level on Wednesday as the previous day at 28 mcm, although much lower than Monday's 44 mcm.

* But overall flows from the UK Continental Shelf were 7 mcm higher on Wednesday.

* Send-out of gas from liquefied natural gas (LNG) terminals is expected to be stable at about 55 mcm with a steady flow of LNG tankers due at British terminals.

* The November gas contract fell 0.9 pence to 41.20 p/therm.

* Day-ahead gas at the Dutch TTF hub fell 0.45 euro to 9.00 euros per megawatt hour (MWh)

* The Dutch month-ahead gas contract, a benchmark for LNG prices as well as European gas, was down 0.4 euro at 15.30 euros/MWh.

* The benchmark Dec-19 EU carbon contract fell 0.39 euro to 22.14 euros a tonne. (Reporting by Sabina Zawadzki, editing by Deepa Babington)