The document discusses the evolution of energy regulation over the past two centuries and outlines challenges for the future. It covers:
1) Old challenges of regulating infrastructure monopolies to ensure universal access and affordability.
2) First wave of new challenges in the 1990s of opening markets through incentive regulation and aligning market design with grid operation.
3) Latest challenges of aligning grids and markets with high renewable energy, and redefining regulation for the energy transition and digitalization including activating distributed energy resources and sector coupling.