The CRC is going to cost a lot to run, is too complicated for most companies to understand and is too opaque to allow companies to predict what they might have to do to get any payment back.
Don't follow through with the Carbon Reduction Commitment. It's too costly for what it might achieve. I estimate it will cost most companies more to administrate than they might make back via the incentive payments. I also think it may well lead to a flow of money from the public sector into the private which is surely undesirable at this time of cuts.
Instead, extend the bottom limit of the current trading scheme to bring in more mid-size commercial users and have a concerted drive across the public sector estate to cut energy use without implementing any trading scheme to move public money from one place to another for little benefit.