Brattle was selected by the European Commission from 17 other potential firms to develop a common EU methodology for estimating the cost of capital in the European telecoms sector. In the report, Brattle highlighted areas where our experts considered it appropriate to set single EU-wide values for WACC parameters and recommended standard EU-wide methodologies to estimate parameter values specific to a member state. The report also assessed the reasonable return on investments for ‘legacy’ copper networks and Next Generation Access (NGA) networks.