Dr. Ciaran Byrne:

There are two elements to it. One is before a contractor even comes on site. Any contractor working on our schemes has to be registered. We typically check they are tax compliant, insured and trained to do the measure they will undertake. For example, for solar PV, you have to have done the additional solar course and be an electrician. That ensures the right person is coming out to do the job. On the private or can-pay schemes, it is a matter between the homeowner and contractor in relation to getting works done and programming. We have an inspections process at the end of that. We inspect a significant number of properties against the criteria for the retrofit. The retrofit is done in a specific and prescribed way in line with the technical guidelines, SR 54, and the NSAI guidelines. In other words, there is a methodology for the retrofit. If we find something untoward in an inspection, we go back to the contractor and identify what we call reworks. The contractor has to go back and fix those items within a certain period of time. If we have continual non-response on reworks, contractors are deregistered from our schemes.