Bill Butcher from Green Building Store shares his approach to creating a low energy barn conversion by building a box within a box. Stirley Community Farm will meet the EnerPHit standard.

Jason and Lucy Reeve share what preparation was necessary to commission their new-build home and Ben Adam-Smith considers what's more important in renovation, preserving the past or creating a sustainable future.

Dr Derek Taylor from Altechnica weighs up the pros and cons of various renewable energy sources and shares his thoughts on whether you should be generating at home. He also talks about his role in creating one of the UK's most energy-efficient homes.