The flaws in floors – and in caps Economic Insight Director, Sam Williams, comments in Utility Week on the possible introduction of floors and caps on returns at RIIO2. DOWNLOAD: The flaws in floors – and in caps PUBLICATION AUTHORS SAM WILLIAMS Reading time: 5 minutes RELATED PUBLICATIONS RIIO-3 Final Determinations – initial review The Cunliffe Review – lessons for energy network regulation Historical underinvestment and the regulatory framework