The Information Commissioner’s Office (ICO) recently published its response to Ofgem’s call for evidence on a “Smart, Flexible Energy System”. In its response, the ICO recognised the “importance of creating a smart and flexible energy network” through devices such as smart meters, pointing to flexible pricing and storage systems as useful tools in managing the electricity network in the future. The ICO cautioned that the large amounts of personal data, which will be generated and transmitted by these new technologies, will be governed by the Data Access Privacy Framework (DAPF). The DAPF limits the extent to which energy providers will be able to access customers’ energy consumption data with half-hourly usage data only available in anonymised or aggregated form. The ICO warned against the use of profiling or targeting to encourage specific customers to change their usage habits except where opt-ins are in place. In relation to smart appliances more generally, the ICO emphasised the importance of ensuring that consumers are given sufficient information to make informed choices about which services they wish to use. In preparation for the General Data Protection Regulation (GDPR) coming into force on 25 May 2018, the ICO reiterated that any consents smart appliance manufacturers obtain from consumers must meet the requirements set out under the GDPR.