Ask the ministers: climate change and energy election debate

Climate change and energy issues are critical over the next decade and beyond. And now is your chance to grill the next secretary of state for climate change and energy on their party's policies to tackle global warming, keep the lights on in the UK and deliver a low-carbon and sustainable economy. The Guardian is hosting an exclusive election hustings event with the lead climate and energy politicians from all three main parties. Tickets for the event are now SOLD OUT but you can ask your question three other ways - in the comments below, via our @guardianeco Twitter account using an @ message, and by posting on our Facebook wall - and our chair will put the questions to the candidates for you. The speakers: • Ed Miliband , secretary of state for energy and climate change, Labour • Greg Clark , shadow secretary of state for energy and climate change, Conservative • Simon Hughes , spokesman on energy and climate change, Liberal Democrat Chair: Ian Katz , deputy editor, The Guardian Date: Wednesday 21 April, 7pm Venue: The Kings Fund, 11 - 13 Cavendish Square, London W1G 0AN Tickets: £5 Book tickets now for Ask the ministers: Climate change and energy SOLD OUT Post your question now. You can also sign up for weekly email updates on environment stories from the Guardian or follow us on Twitter ( @guardianeco ).