The world’s energy system over the last hundred years has seen the gradual penetration of lower carbon intensive fuels. All the traditional carriers continue to contribute to energy supply, with electricity emerging as arguably the most important this century, and renewable technology very important for the sector. Hydrogen may also have an important role to play in the coming decades because it is a natural next step in the decarbonisation of fossil fuels, and it means that much of the existing gas infrastructure can continue to be used. This thought-piece explores the potential emergence of hydrogen and the role of renewables in what is seen as an energy dream team.