The average business energy bill
What should your business be paying for energy? Here are the typical figures by size, and how OptiFlow Watch makes sure you are on the right side of them, for a flat £49.99 a month.
What businesses typically pay
There is no single average energy bill, because a corner shop and a factory are worlds apart. The useful way to look at it is by how much energy you use, since that drives the bill far more than anything else. The figures below are typical annual electricity ranges by business size. Gas sits on top where you use it, and the unit rate you are on can swing the total by thousands either way, which is exactly the part most businesses never check.
Figures are typical UK ranges for 2026 and are illustrative only. Actual bills vary by usage, tariff, location and contract. OptiFlow Watch models your saving against your own bills.
Typical yearly electricity by size
£900 to £1,650
Micro business using around 5,000 units a year, such as a small shop or office.
£2,800 to £4,800
Small business using around 15,000 units a year.
£14,500 to £23,000
Medium business using around 75,000 units a year.
Larger sites and manufacturers run well beyond this, into six figures. Business electricity averages around 22p to 27p a unit before standing charges and VAT.
How OptiFlow Watch helps
We check you against the market
Watch reads your bills and compares your rate to what you could be paying, so you know if you are above average and by how much.
We move you and hold it
Where there is a better deal, we switch you, then watch your renewal so you never drift onto expensive rates.
Try the calculator
Enter your own numbers and see an estimated saving in about a minute.
Guaranteed saving
For a flat £49.99 a month, we guarantee a saving against your real bills or it is not worth your while.
See where your bill sits
OptiFlow Watch checks your energy against the market and guarantees a saving, for £49.99 a month.