Guides to half-hourly data
Clear answers to the questions people ask when they first look at half-hourly electricity data.
Getting your half-hourly data
Who has it, what to ask for, a letter template, and the file formats the analyser reads.
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Worked example: one office, one year
What the analyser found in a year of data from a small office.
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Worked example: a primary school
Heating left on through half term, evening lettings, and term dates.
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How to read a heatmap
Every half hour of a year on one chart, and the patterns to look for.
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Out-of-hours electricity use
How to find use while the building is closed, reduce it, and who to involve.
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Base load
What always runs, how to measure it and how to reduce it.
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Supply capacity and kVA
Room for heat pumps, EV charging and other new equipment.
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Proving a saving worked
How to compare before and after fairly.
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Half-hourly settlement (MHHS) explained
What the move to half-hourly settlement means, and the timetable to 2027.
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Reading your MPAN
Profile class, network region and what half-hourly settlement changes.
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Electricity benchmarks by sector
Typical kWh per m² for offices, shops, schools and more.
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What's in a business electricity price
Wholesale, network, policy, tax and supplier costs, with a worked example.
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Non-energy charges explained
TNUoS, DUoS, BSUoS, levies and taxes, with 2026/27 rates.
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Ten years of business electricity prices
What businesses paid from 2015 to 2026, and why.
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Where non-energy costs are heading
Published forecasts and decisions for 2027 and beyond.
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Glossary
kW, kWh, kVA, base load, MPAN and other terms.
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How the analyser works
Each step, from reading your file to the report.
Read the guideLooking for your sector? See what to look for by sector.
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