The Netherlands Competition Authority (Nma) conducts the evaluation of the Gas Act and the Electricity Act from 1998. Part of this evaluation is the question whether the process of tariff regulation is efficient and effective. This question for this research concerns the regulation of network companies. The question is not whether these companies should be regulated and what the legal objective of the regulation in this regard should be. The real question for this study is whether the regulatory process can be organized efficiently and effectively, given the objectives of the legal regulatory framework. This report examines alternatives that may lead to a more efficient and / or more effective process. This report also looks critically at NMas own proposals and provides alternative suggestions in addition. The additional suggestions may include proposals that require a change in the legal framework.