The report also points to persisting gaps and to the need for further progress in the real implementation of rules in practice in the full spirit of the law. [...] Lord Mogg Alberto Pototschnig Chair of ACER’s Board of ACER Director Regulators and CEER 7 ACER/CEER ANNUAL REPORT ON THE RESULTS OF MONITORING THE INTERNAL ELECTRICITY AND NATURAL GAS MARKETS Executive Summary Introduction Structure of the This is the first annual Monitoring Report by the Agency for the Cooperation of report Energy Regulators (“the Agency”) and the Council of European Energy Regu. [...] The main categories of economic indicators used in this chapter to assess the development of competition in electricity retail markets are the evolution of prices and switching rates.13 In order to ensure an in-depth analysis, and due to data constraints, this report will focus on prices and switching rates, although the Agency and CEER do recognise the importance of other retail monitoring indica. [...] 32 % ACER/CEER ANNUAL REPORT ON THE RESULTS OF MONITORING THE INTERNAL ELECTRICITY AND NATURAL GAS MARKETS (47) Figure 6 shows the variations in the structure of prices charged to household customers in the capital cities of the EU-15 countries in which price regulation applies. [...] (62) The data is compiled in the following way: • The monthly average of power exchange prices; • The average spot prices during the last three months; and • The monthly average of the energy component of the retail price in capital cities (excluding network charges, taxes, levies).44 (63) In principle, the commodity price should, at least to a certain extent, influence the retail price.