Is there a price cap on business energy?

The straight answer

There is no price cap on business energy in Great Britain. Ofgem's energy pricing rules page describes the price cap as being about domestic customers on default tariffs, and says nothing about limiting business rates. The only well-known cap is the household one, which is reviewed every quarter, and it does not apply to a business just because you are small.

That matters because headlines about the cap rising or falling say nothing about your bill. Business prices are set by contract, and you negotiate them. For the reasoning, see why the household cap doesn't apply to businesses.

What you get instead of a cap

Because there is no limit on price, rules concentrate on fairness and transparency. The main ones for small firms:

• Principal Terms. Suppliers must set out key contract terms clearly, and broker costs must appear there (microbusiness contracts since 1 October 2022; all non-domestic since 1 October 2024).
• Renewal information. At rollover, suppliers must give the details required by their licence; a rollover can last no more than 12 months.
• Out-of-contract rules. A supplier cannot charge a termination fee to an out-of-contract customer, and cannot require a microbusiness to give notice, except under an evergreen contract (up to 30 days).
• Deemed contracts. Ofgem's guidance says terms must be "not unduly onerous", although it does not fix a price.
• Backbilling. The 12-month limit applies to domestic and microbusiness customers only.
• Complaints. The Energy Ombudsman covers microbusinesses and small businesses.

These come mainly from Ofgem's microbusiness rules; see extra protections for microbusinesses. There is also no cooling-off period once a business contract is agreed, even by phone.

Deemed and out-of-contract rates: where the missing cap bites

The place you will feel the lack of a cap is when you drift onto default rates. A supplier is allowed to set these higher than fixed prices because you are not locked in. Indicative averages from Moneysupermarket Business (21 October 2026), which has some internal inconsistencies, are 40.0p/kWh plus 254.0p a day for electricity out of contract, against 28.4p plus 58.0p for a micro fixed deal.

Worked example: a barber using 8,000 kWh a year.

• Fixed: 8,000 × £0.284 = £2,272.00, plus 365 × £0.58 = £211.70, giving £2,483.70.
• Out-of-contract: 8,000 × £0.40 = £3,200.00, plus 365 × £2.54 = £927.10, giving £4,127.10.
• Difference: £4,127.10 − £2,483.70 = £1,643.40 a year, before CCL and VAT.

No cap protects you from that gap; only acting does. See how much more deemed rates cost and how to get off them, and our out-of-contract calculator.

The same gap on gas

Gas shows the same pattern. The same publisher's indicative October 2026 averages put out-of-contract gas at 12.0p/kWh plus 338.0p a day, against 8.8p plus 44.9p a day for a micro fixed deal.

Worked example: a café using 15,000 kWh of gas a year.

• Fixed: 15,000 × £0.088 = £1,320.00, plus 365 × £0.449 = £163.89, giving £1,483.89.
• Out-of-contract: 15,000 × £0.12 = £1,800.00, plus 365 × £3.38 = £1,233.70, giving £3,033.70.
• Difference: £3,033.70 − £1,483.89 = £1,549.81 a year, before CCL and VAT.

Notice how much of the gap comes from the daily charge: £1,233.70 − £163.89 = £1,069.81 of it is standing charge alone. A low-use site can be hit hardest, because it pays the high daily charge whatever it uses.

Check whether you are a microbusiness

Without a cap, the size of your business decides how much protection you get. You count as a microbusiness if any one of these applies: fewer than 10 employees and turnover or balance sheet of no more than €2 million; electricity use under 100,000 kWh a year; or gas use under 293,000 kWh a year. You can be a microbusiness for one fuel and not the other. Small businesses (for example, up to 200,000 kWh of electricity or 500,000 kWh of gas a year, or fewer than 50 staff with turnover up to £6.5m or balance sheet up to £5m) can use the Energy Ombudsman, but the 12-month backbilling limit and the microbusiness notice rules do not cover them.

What to ask before you accept a renewal

• What are the unit rate and standing charge, and are both fixed for the whole term?
• Which charges, if any, are passed through at cost?
• Is any broker cost included, and what is the total in pounds?
• What rate will apply if I do nothing when this contract ends?

Get the answers in writing before you agree anything, by phone or online.

Is any help available at all?

The Energy Bills Discount Scheme ended on 31 March 2024 and there is no general support scheme for businesses in 2026. A temporary 0% VAT rate on qualifying domestic and charity non-business electricity runs in Great Britain from 1 October 2026 to 30 June 2027 (HMRC first announced an end date of 31 March 2027; Budget 2026 extended it, according to HMRC VAT Notice 701/19: fuel and power). Business use stays at 20% VAT. Targeted help exists for energy-intensive manufacturers only. See government help with business energy bills and zero-rate VAT on electricity.

Could a business cap happen?

We found no official plan for one. A comparison site says the government has no plans, but we did not find a government statement, so treat this as unconfirmed. A cap would also be hard to design, since business tariffs vary so much.

How to protect yourself without a cap

1. Know your end date. Diary it; see how to find it.
2. Shop the renewal early. You can usually agree a deal well before your current one ends; see how early you can renew.
3. Compare total cost not just p/kWh.
4. Check broker fees in the Principal Terms.
5. Complain properly if something goes wrong: supplier first, then the Energy Ombudsman after 8 weeks or a deadlock letter, within 12 months.

A mixed-use warning

If you trade from your home, a domestic tariff is not a loophole; business use needs a business contract, and domestic suppliers can object. Check with any domestic supplier before assuming you can use one.

Next steps

1. Check whether your rates are fixed or default.
2. Get quotes if you're out of contract or within a few months of renewal.
3. Read the business energy contracts guide.

Biz Energy is an independent information site, not a supplier or broker.