/  Hydrogen has long been touted as a clean energy saviour, but so far its use has been limited. With a number of new ventures now in place, we ask if hydrogen could finally fulfil its potential as an energy source?

We also talk to InnoEnergy about improving gender diversity in the energy transition, profile energy technologies that have faltered in the theory stage, examine the split in the US over a change in federal emissions policy, and take a look at some of the most disappointing solar projects.  

Plus, we find out whether supermarket fridges can help support the grid, explore alternative metals powering the battery boom, investigate the UK's potential blackout crisis, and hear from Siemens about energy storage.  /

Read on for all this and more, and join the conversation on Twitter. 

Callum Tyndall, editor