Decentralisation of electricity generation, and electrification of heating and transportation pose challenges for the distribution networks, such as possible network congestion. Network operators investigate alternatives for reinforcements. Flexibility through demand response (DR) is one of these alternatives. Four theoretical possibilities for flexibility as a solution for congestion management are presented, in relation to four pilot projects on congestion management in the Netherlands. This article evaluates these four pilot projects based on six evaluation criteria. The strengths and weaknesses of all pilots are addressed, and the results of the pilot projects are discussed.