Russia has been accused of using gas supplies as a weapon against the West since the invasion of Ukraine.French grid operator, GRTgaz, said it would initially deliver 31 gigawatt hours (GWh) per day, via a pipeline from the French border village of Obergailbach."If we did not have European solidarity and an integrated, united market right now, we would have serious problems," said French President Emmanuel Macron on Wednesday.Russia's invasion of Ukraine in February led to gas price hikes, and EU customers face record tariffs this winter.Nord Stream 1, Russia's largest gas pipeline to Europe, was closed indefinitely in August for technical reasons, and a number of leaks were then discovered in September."