Two different aspects to the issue of energy policy: we will all agree that clarity and strong direction is needed; what that direction should be is the matter of the debate, and time is of urgency.

There are strong polarising views, which means the answer will be a shade of grey. It is not just about the colour though; to ensure a good tv quality image we need a well-positioned and orientated aerial but also to fine-tune the contrast and brightness of the image...