Octopus Energy's plug-in solar kits sell out but more are 'on the way'

<p>Mark is TechRadar's Senior news editor and has been a technology journalist since 2004, back when people used the word 'gadgets' and the world's most desirable phones were made by Sony Ericsson. He's so old that his first published feature was a 'next big thing?' article about Blu-Ray. Mark started life in the print world as Reviews Editor then Features Editor on Stuff, which was the world's biggest-selling tech magazine.