There are three contestants in this heat. Dr. Alex Gardiner presented his eco-wand. Cecilia Satterwaite presents her roof turbine and the final contestant is Tanya Ewing with her Ewgeco.  

Tanya is the winner of this heat. The Ewgeco is a real time monitor of electricity water and gas.Tanya will join Harry Ward, James Seddon, Andrew Blee, Glyn Larcombe and Tony Mooney in the final. One of the winners will win £10,000 the other award is from LIFE-IC - who will support the successful inventor to get their idea into production.

Make sure you join us on the 13 March for the final that will be held in the Tate modern in London. We will be filming the competition and make sure you keep updated on the day with the live twitter feeds.