UK GAS-Prompt prices rise on Norwegian outage

* System undersupplied by 17 mcm/day

* Kvitebjoern field output cut by 15 mcm/day

June 16 (Reuters) - British prompt prices for gas rose on Tuesday as an unexpected field outage reduced flows from Norway, leaving the UK system undersupplied as imports from the Netherlands also fell.

Gas for day-ahead delivery gained 0.22 pence from the previous settlement to 43.10 pence per therm by 0800 GMT, supported by a rise in gas for immediate delivery by 0.55 pence to 43.50 pence.

Britain's gas network was undersupplied by around 17 million cubic metres (mcm) per day, with demand pegged at 175 mcm, National Grid (LSE: NG.L - news) data showed.

Norwegian gas flows to Britain fell by 15 mcm/day on Tuesday morning due to an unplanned outage at the Kvitebjoern field that should last for 12-24 hours, Norway's gas system operator Gassco said.

Imports from the Netherlands via the BBL pipeline dropped to zero early on Tuesday from some 13 mcm/day on Monday.

However, rising wind power output dented gas demand for power generation, analysts at Thomson Reuters Point Carbon said.

Wind power output is forecast to rise by over 2,000 megawatts during peak hours on Wednesday from Tuesday, Point Carbon data showed.

The liquefied natural gas (LNG) tanker Rasheeda was confirmed to deliver a cargo to the South Hook terminal on June 23 from Qatar, while ship-tracking data showed LNG tanker Stena Clear Sky would arrive at South Hook on Tuesday from Zeebrugge.

Gas prices further along the curve edged higher, with the July contract trading up 0.18 pence at 42.53 pence a therm and the winter contract firming 0.15 pence to 47.95 pence per therm.

In the Netherlands, the day-ahead gas price at the TTF hub inched up 0.15 euro to 20.45 euros per megawatt-hour.

In Europe's carbon market, the benchmark front-year price was trading at 7.51 euros a tonne on ICE Futures Europe, down four cents on the day. (Reporting by Nerijus Adomaitis in Oslo; Editing by Dale Hudson)