Oct 5 (Reuters) - Dutch wholesale gas prices broke the 100 euro level for the first time on Tuesday morning amid wider energy market price hikes, supply concerns, low colder weather forecasts and a cut in French nuclear generation due to a strike.
* The November gas price at the Dutch TTF hub, a European benchmark, broke the 100 euro level, a new record high. The contract was 16.25 euros higher at 111.25 euros per megawatt hour by 0939 GMT.
* The December price also went above 100 euros, trading 15.77 euros higher at 110.99 euros/MWh.
* "All energy prices - coal, oil, gas, power - are up. There doesn't seem to be any let up to the rallying," a gas trader said.
* The market seemed to shrug off news that Nord Stream 2 has started filling one of its two pipelines with natural gas for tests, according to the operator on Monday.
* Germany's energy regulator has also asked Swiss-based Nord Stream 2 AG to provide assurances that the Nord Stream 2 pipeline meets regulatory requirements when it enters service, adding it cannot be ruled out that operations could start soon.
* Brent crude oil futures rose to near three-year highs, with U.S. benchmark crude close to 2014 peaks, after the OPEC+ supplier group decided to stick to a gradual output increase plan rather than fully opening the taps.
* "North-west Europe day-ahead fundamentals remain relatively tight compared to the previous day," said Refinitiv gas analyst Xun Peng.
* Physical gas flows to Europe from Russia through the Mallnow pipeline are at 120 GWh/day, significantly lower than 540 GWh/day in late September, Peng added.
* Day-ahead consumption for north-west Europe is forecast 300 gigawatt hours per day higher due to colder weather and less wind, which should push up demand for heating.
* German wind power production is also expected to drop below normal from tomorrow.
* In France, five nuclear reactors are operating at limited capacity due to a strike, reducing available production by 2.7 gigawatts.
* In the British market, prices neared 250 pence per therm.
* Around half of UK's 8 GW nuclear generation capacity is offline for outages, both planned and unplanned, with some restart dates recently extended.
* The benchmark Dec-21 EU carbon contract was up 0.78 euro at 104.00 euros per tonne.
* The benchmark Dec-21 British carbon contract was down 3.5 pounds at 65.50 pounds a tonne. (Reporting by Nina Chestney)