In the last three years, hydrogen has become all the rage. For those following energy and climate, barely a day goes by without a new story about hydrogen. But is hydrogen essential to our efforts to decarbonise the global energy system?

In the last three years, hydrogen has become all the rage. For those following energy and climate, barely a day goes by without a new story about hydrogen. But is hydrogen essential to our efforts to decarbonise the global energy system?