The effectiveness of market regulation work package is the next step in the REGUNET project, after the initial mapping of the energy and telecommunication sectors in the previous work package. The current work package uses market effectiveness as a proxy for regulatory effectiveness and identifies three components of market effectiveness: a market structure component, a production component, and a consumption component. A fourth component is added, made up of confounding factors that can explain differences in the figures between countries and over time that have little to do with changes in the regulatory arrangement of a particular sector (see figure 2). This is designated as the confounding component. Each component groups a number of indicators, which differ by sector. The exact hypotheses for each of the indicators are explained in the parts specific to each sector, but overall we assume a beneficiary effect of a liberalized regulatory scheme on each of the indicators and test this hypothesis in a general way.