Even as I write this editorial on the shortest day of the year, my desk is full of solar power stories, chief among them the news that solar power is now officially cheaper than wind. This is great testament to the hundreds of thousands of people around the world – from research scientists to front line social enterprises – that have literally lit the way. Equally important, however, is to recognise how far we have moved from the first clunky panels and solar lanterns to sophisticated mini-grid installations now able to support not only domestic uses of energy but also increasingly productive uses. Fortunately, this seems to be happening if you read through this week’s articles that include a wider range of politicians acknowledging that solar and other renewables have a key role to play in at least rural electrification. I hope that next year will see this sunny outlook continuing.