Sectors

Electricity use in healthcare buildings

Hospitals and many care settings run 24 hours a day, so out-of-hours use is less relevant. Comparing day with night, and peaks with supply capacity, tells you more.

Expect continuous use with a rise during the day. Clinics, surgeries and offices on the same estate keep office hours and should be treated like offices.

Illustration of a hospital estate with clinical buildings, a multi-storey car park, plant compounds and a substation

What to check first

  • Night-time use in non-clinical areas that is close to daytime use
  • Weekend use in outpatient and administrative buildings
  • Peaks already close to supply capacity, before electric heating or EV charging is added
  • Steps up in base load after new equipment or a refurbishment
  • Sub-meters for different buildings or wings, if you have them

Setting the opening hours

Set 24-hour buildings as always open, so the analysis focuses on base load, peaks and changes over time. Give clinics and offices their actual opening hours.

Use these as a starting point. Each site is compared with its own calendar, so getting the hours right matters more than the type of building.

How does your building compare?

To see whether a site's total use is high for its type, compare its kWh per square metre with the government survey ranges in our electricity benchmarks by sector. Then use the half-hourly pattern to find out why. Questions about the analyser itself are answered in the FAQ.

Thinking about solar panels? The analyser's Capacity tab shows how much of a system's output a building like this would use itself, and the UK Solar Calculator works out the cost and payback. See sizing solar from half-hourly data.

Questions people ask

Can out-of-hours analysis work for a hospital?

For the main 24-hour building, compare day with night and track the base load instead. For clinics and offices on the estate, out-of-hours analysis works as it does for any office.

Why does supply capacity matter so much in healthcare?

Replacing gas heating with heat pumps adds a large electrical load in winter. Check how close your winter peaks already come to the agreed capacity first.

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