Since the start of the Ukraine conflict, natural gas prices, a major feedstock for producing fossil fuel-produced hydrogen, has soared by more than 70 per cent.
The group promoted by Gautam Adani, the world's third richest person, held talks with Singapore's sovereign wealth fund GIC and Singapore investment firm Temasek.
It will be interesting to see how the US and the big European energy consuming nations respond to the pressure tactic of the Opec+ cartel, in which Russia is wielding an outsize influence.
Once the maintenance is complete Gazprom will resume pumping of 33 million cubic metres of gas a day through the pipeline, which is mjust 20 percent of the original capacity.