From an economic viewpoint, SMRs have higher specific investment costs and, consequently, higher LCOE than larger nuclear units (Boarin, 2012). However, SMRs have the advantages of shorter construction times, much smaller upfront capital investments and greater financing flexibility. Thus, the utilities have the opportunity to increase progressively the nuclear capacity and to postpone or suspend investments in response to changing market conditions. Together, those characteristics results in smaller financial risk, making such reactors potentially attractive to private investors and to countries initiating a nuclear programme.