The tightness of the energy performance (EP) requirement levels is a hot topic in a lot of European countries. For instance Germany just tightened its EP requirements with 30% per October 1 and various other countries, like the Netherlands and Denmark, have a long term planning for tightening their EP requirements in several steps. But how can we compare these EP requirements among the countries of Europe? Within the EU project ASIEPI we have developed a method for comparison. This second web event on this topic will update you on the results of our challenging task.