Dr. Matt Yardley:

The third reason is that with the 300,000 outside the intervention area, the project cannot generate revenue from that. We did not inspect the revenue side at all but we are trying to help the committee to understand why the subsidy can move around quite a lot. We are talking about a combination of a cost change, which happens upfront and hits quite hard but also the revenue building up over time is much less. When one looks at that from a cashflow perspective, it has a very strong effect on the subsidy. We never saw the effect in totality. All we saw was the change in cost as we changed our cost model.