In 2007, Ellis-Bextor appeared at Christmas in the "Robbie the Reindeer" episode, "Close Encounters of the Herd Kind". Ellis-Bextor was depicted as a female alien at the closure of the story, singing the song "Supersonic", the last track on her third solo studio album "Trip the Light Fantastic". In November of that year she also launched the npower Greener Schools Programme, which aims to give schools in the UK a 'green makeover' by providing free energy audits, implementing tailor-made energy efficiency measures to reduce their carbon footprint, and educating children on how to be greener She also launched Capital Radio's Capital 95.8 'Lights Out London' campaign, which asks Londoners to switch off their lights for one hour in a bid to save 750 MWh and send a message to the world on the importance of climate change.