Ms Aoife MacEvilly:

It is the economic test that is applied to whether the heat use is economically justifiable. We are very clear that the certificates are not enduring. For example, a full certificate could be reduced to a partial one at a later point. If a partial certificate is issued and a plant starts to use the heat in an alternative fashion and it can demonstrate that it meets the criteria for a full certificate that can change too. It is clear in the process that they can change. It is not like getting planning permission which is enduring in nature. Rather, it is something that can change over time and we are very clear about that in our process. Not only do we issue the certificate for the planned plant based on an application and data submitted, once the plant has been operational for 14 months we review a year of actual operational data and test it to ensure that it is consistent with what was submitted. If it is not consistent, we will change the certificate. We have done that in the past, not for a planned plant but for an existing plant. We made changes to the certification based on what we seen when we tested an audit.