The P272 regulation is a piece of legislation put into effect by the UK government in 2017. It requires companies in electricity-intensive industries (EIIs), such as manufacturing and food processing, to move from non-half hourly meters (NHH) to half hourly meters (HH). Moving to half hourly metering allows suppliers to keep better track of customer energy usage more accurately.
Most large non-domestic electricity consumers were issued with Automated Meter Reading (AMR) meters in April 2014. ARM meters have the ability to record Half Hourly (HH or 00) consumption. Measuring the HH usage data will more accurately reconcile costs between consumers and suppliers.