 An industry observer noted that post-Fukushima costs were likely to go up for both current and new nuclear power plants, due to increased requirements for on-site spent fuel management and elevated design basis threats.License extensions for existing reactors will face additional scrutiny, with outcomes depending on plants meeting new requirements, and some extensions already granted for more than 60 of the 100 operating U.S. reactors could be revisited.On-site storage, consolidated long-term storage, and geological disposal of spent fuel is "likely to be reevaluated in a new light because of the Fukushima storage pool experience".