TrustMark

Established in 2005, TrustMark has since expanded its remit following the Each Home Counts (EHC) review in 2016 to include all Repair, Maintenance and Improvement (RMI), Energy Efficiency and Retrofit measures. From 1 July, 2021, on behalf of Ofgem, TrustMark will be responsible for the Energy Company Obligation Technical Monitoring. From this date, this work will be subject to TrustMark's Quality Assurance Framework. TrustMark operates within a Master Licence Agreement issued by the Government's Department for Business, Energy and Industrial Strategy (BEIS).