CMA receives multiple appeals over Ofgem price control Nine firms are seeking permission from the CMA to appeal against Ofgem’s price controls for energy companies. From: 5 March 2021 The companies are appealing against changes to the electricity and gas transmission, and gas distribution, licences which set out how much energy companies can charge their customers. These changes are a result of the RIIO-2 price control decision issued in December 2020 by Ofgem. The appeals largely focus on the allowed return on investment and the way Ofgem calculated the costs the companies would spend on maintaining and investing in their networks over the next 5 years.