Bills and meters

How to read a business electricity bill

Written by Ben MetcalfeUpdated November 2026

Short answer

The key items on a business electricity bill are your MPAN, contract end date, consumption, unit rate, standing charge, Climate Change Levy and VAT. Find those and you can check your bill and compare any offer.

Key takeaways

  • Find the MPAN, end date, consumption, unit rate, standing charge, CCL and VAT.
  • Check whether readings are actual (A) or estimated (E).
  • Check that the VAT rate matches your use.
Business Electricity BillExample layout
Supplier formats vary
A · Supply number (MPAN)S 00 000 000 / 00 0000 0000 000
B · Contract end dateDD/MM/YYYY
C · Consumption0,000 kWh (A = actual, E = estimated)
D · Unit rate00.00p per kWh
E · Standing charge00.00p per day
F · Climate Change Levy£0.00
G · VAT£0.00
Illustrative layout only, not real prices.

A. Supply number (MPAN)

Identifies your electricity supply point. You'll need it for any quote. See MPAN explained.

B. Contract end date

The most important date on the bill. Missing it can mean out-of-contract rates. Not every supplier prints it on the bill; if it isn't there, ask them.

C. Consumption and meter readings

The kWh used in the billing period, worked out from the previous and current readings. Each reading is usually marked as actual (A) or estimated (E). Long runs of estimated bills can lead to a large catch-up bill later, so send readings regularly or ask about a smart meter.

D. Unit rate

Pence per kWh. Some meters have more than one rate, such as day and night. Check the rates match your contract.

E. Standing charge

Pence or pounds per day, multiplied by the number of days in the period. See standing charges.

F. Climate Change Levy

An environmental tax on business energy, charged per kWh at a rate set by government. Low-use supplies and some other uses are exempt.

G. VAT

Usually 20% for business supplies. If you use no more than 33 kWh of electricity a day on average, you should pay 5% and no Climate Change Levy.

Other things you may see

  • Capacity or availability charges on half-hourly supplies
  • Reactive power charges on some larger supplies
  • Pass-through charges if your contract passes some costs through
  • Previous balance and payments, which you should check against your records

A quick bill check

  1. Are the readings actual rather than estimated?
  2. Do the rates match your contract?
  3. Is the VAT rate right for your use?
  4. Is the billing period sensible, with no overlaps or gaps?

Gas bills

A business gas bill has the same structure, with an MPRN instead of an MPAN and an extra step that converts your meter reading from volume to kWh. See gas contracts for how that conversion works.

Billing errors worth checking for

  • Estimated readings far from your actual use
  • A meter treated as imperial when it is metric, or the reverse
  • Rates that don't match your contract
  • 20% VAT on a supply that qualifies for 5%
  • Charges for a period before you took over the premises

If something looks wrong

Contact your supplier first with the bill, your meter readings and your contract. If the complaint isn't resolved, micro and small businesses may be able to take it to the Energy Ombudsman once the supplier's process is complete.

Sources

  • HMRC: Climate Change Levy rates (gov.uk)
  • HMRC: VAT Notice 701/19, fuel and power (gov.uk)
  • Ofgem: Energy advice for businesses (ofgem.gov.uk)

Questions

What does E mean next to a reading?

The reading is estimated. Send an actual reading to keep bills accurate.

Why am I paying 20% VAT?

Most business supplies pay 20%. Low-use supplies under the de minimis threshold qualify for 5%.

Where is my contract end date?

Often near the tariff details. If it isn’t shown, ask your supplier.

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