"These are some of the things we can see in data from electricity grid provider UK Power Networks (UKPN), which provides electricity utilisation rates taken half hourly for 96 datacentre sites within its region. This stretches from the datacentre hotspots of west London and Docklands, south-eastwards to Kent, Surrey and Sussex, and includes all of Essex and East Anglia."
"Utilisation ratios are calculated by comparing actual electricity import - measured half-hourly by smart meter - against the maximum capacity booked by the customer. Site voltage corresponds to the likely size of the datacentre. Low-voltage (LV) sites are typically 400V connections for smaller enterprises, edge datacentres and server rooms. High voltage (HV) in the UKPN data likely refers to 11kV or 33kV connections to colocation hubs and mid-range datacentres."
"The average utilisation rate for all UKPN data is just over 20% of booked capacity. Extra-high-voltage sites use the least of their allotted supply (12%), while low-voltage sites use more (18%). We have taken the data points and split them by voltage levels that"
"The UKPN dataset starts at the beginning of 2023 and runs to April 2026. Altogether, it comprises almost 5.4 million rows and covers datacentres categorised by the voltage they import from the grid: extra-high voltage (12 sites), high voltage (60), and low voltage (24)."
Electricity utilisation data from UK Power Networks covers half-hourly electricity imports for 96 datacentre sites across west London, Docklands, and areas extending to Kent, Surrey, Sussex, Essex, and East Anglia. Research using Electricity Performance Certificate data identified 80 datacentres in the region with a combined capacity of 798MW. The dataset spans from early 2023 to April 2026 and contains nearly 5.4 million rows, grouped by grid import voltage: extra-high voltage, high voltage, and low voltage. Utilisation ratios compare measured electricity import against maximum booked capacity. Average utilisation is just over 20%, with extra-high-voltage sites at about 12% and low-voltage sites at about 18%.
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