How is business energy different to household energy?

Business energy runs on different rules, different rates and different contracts to the tariffs available for your homes. There's no price cap, no cooling-off period once you've signed, and your rate is priced around your own usage rather than a national average. 

That's why switching your business can seem harder than switching your home suppliers. This guide explains what's different and what it means for you and your business.

The main differences between commercial and domestic energy

Although it comes from the same sources, and maybe even the same suppliers, business energy isn't the same product with a different label. Here's what sets it apart.

You won't get an off-the-shelf tariff

Household tariffs are largely standardised. Business rates aren't. Suppliers price each contract around your postcode, your usage pattern and your credit profile.

What this means for you: two businesses on the same street can pay different unit rates for the same energy, even on the same day.

There's no price cap on what you pay

Ofgem's price cap limits what suppliers can charge households on standard variable tariffs. It doesn't apply to businesses at all. Learn more at our guide to the energy price cap.

What this means for you: your rate is set by the market and by your supplier, not by a regulator-set ceiling. A fixed contract is the closest thing you get to protection from sudden rises.

You can't change your mind after signing

Domestic energy customers get a 14-day cooling-off period under UK consumer law. Business customers don't get the same automatic right once a contract is agreed.

What this means for you: check the details carefully before you sign, because you're committing from day one.

You can't combine gas and electricity into one contract

Household suppliers routinely offer dual fuel deals, bundling gas and electricity under one bill, often at discounted rates. Business suppliers don't work this way. Gas and electricity are priced and contracted separately, even if you get both fuels from the same supplier.

What this means for you: you'll manage two contracts with two renewal dates, even if both run with the same supplier.

Your contract can run longer than 12 months

Although longer terms are available, fixed household contracts typically run for 12 months. Business contracts commonly run for one, two or three years, and some suppliers offer longer.

What this means for you: a longer term can lock in price certainty, but it also locks you in if a cheaper deal appears later.

Business energy rates vs household energy rates

The tables below set out how the two markets compare on typical unit rates, as of August 2026. Business figures are illustrative averages for a small or medium-sized user and exclude VAT. Your own quote will depend on usage, location and contract length.

Household gas rates and business gas rates comparison 

	Unit rate	Standing charge	Annual annual bill
Household gas (cap)	7.3p	29.0p	£1,641 (dual fuel)
Micro business gas	7.9p	36.8p	£924 (single fuel)
Small business gas	7.6p	47.8p	£1,884 (single fuel)

Household electricity rates and business electricity rates comparison 

	Unit rate	Standing charge	Annual annual bill
Household electricity (cap)	26.1p	57.2p	£1,641 (dual fuel)
Micro business electricity	27.8p	54.9p	£2,980 (single fuel)
Small business electricity	26.7p	62.3p	£5,567 (single fuel)

^{Note: Household rates are based on the price cap rate for a typical household paying by Direct Debit from July 1, 2026, to September 30, 2026. See the Ofgem website for more details. Business energy rates are correct as of August 2026. Rates and bill size may vary according to your meter type and business location. The prices you’re quoted may be different from the averages shown. The figures shown are the average unit rates and standing charges received by Bionic from our panel of suppliers (inclusive of maximum Bionic commission), per business size thresholds, from August 1 to August 10, 2026.}

Unit rates for business and household energy sit closer together than you might expect. The real gap is elsewhere - businesses pay 20% VAT rather than 5% in most cases, get no regulator-set ceiling, and typically buy on fixed multi-year contracts rather than a capped default tariff. Read more in our guide to VAT on business energy.

Business bills also carry the Climate Change Levy, a small per-unit charge that doesn't appear on household energy bills at all. It's usually built into your unit rate rather than shown as a separate fee, but it's worth checking your quote includes it.

The gap exists because business accounts carry different usage volumes, different risk profiles and no subsidised cap to fall back on. Suppliers price for that risk directly into your quote.

How can these differences affect your business?

The differences outlined above may not sound like a big deal until you see how they can affect a real business like your own.

Take a sole trader running a small unit, such as a hairdresser or a café. Usage is modest and fairly predictable, so suppliers can offer competitive rates once they see the numbers. The risk sits in the contract length - a one-year-deal might seem appealing, but if prices spike, you could pay significantly more at renewal. But if you sign a three-year deal, you could be tied in well past the point a cheaper rate appears elsewhere.

A small retail unit or takeaway may have higher and more variable usage, driven by equipment, lighting and footfall. This business benefits most from close attention to unit rates and standing charges, because small differences compound over a bigger annual bill. This is where a time-of-use tariff could help save money and why comparing tariffs before a contract ends can matter more here than for a lower-usage business. 

A multi-site or higher-usage business, such as a small chain of shops or a group of trade premises, faces the most complexity. Each site may sit on a different contract end date, a different supplier, or a different meter type. Aligning renewal dates across sites, and comparing them as one exercise rather than several, is usually where the biggest savings sit. For more information, check out our guide to multi-site energy.

Working from home: which tariff applies to you?

Running a business from home doesn't automatically mean you need a business energy tariff. It comes down to how much of your energy use is for business rather than domestic purposes.

As a rough guide, if business use makes up less than half your total energy, a domestic tariff usually still applies. Once business use passes that point, suppliers may expect you to move to a business contract, priced and billed the way this guide describes.

Some home-based businesses count as a microbusiness, which brings a few of the protections closer to the domestic market, including a shorter notice period at renewal, and in some cases a brief cooling-off window that most business contracts don't otherwise offer. Rules vary by supplier, so it's worth confirming your status when you get a quote.

What this means for you: if you're not sure which side of the line you fall on, tell your supplier or broker how your business and home use split. Getting this right from the start avoids being billed on the wrong tariff, or paying VAT at the wrong rate.

What this means when you switch

Business energy switching runs on its own timetable, separate from the household rules you might already know.

Your current contract will have a renewal or switching window, which can be several months before its end date, set out in your terms. 

Miss it, and you'll be rolled onto out-of-contract rates, which are typically far higher than a negotiated deal. These rates carry a real cost, so it's worth diarising your renewal date well ahead of time. Our guide to fixed vs. variable business energy contracts covers how to weigh up your options at renewal.

There's no cooling-off period once you've signed a new business contract, so it pays to compare properly and get the help of an energy expert.

If your business runs past its contract end date without switching, most suppliers move you to a deemed or out-of-contract rate. 

Where MoneySuperMarket's process differs from a straight comparison site

Household energy can be switched entirely online in a few clicks, because tariffs are standardised. Business energy often can't, because quotes are priced around your specific usage, site and credit profile.

That's why our process runs in three steps:

1. You share your business and meter details
2. One of our team talks you through the quotes available for your usage
3. You choose the deal that fits your business.

When you get a quote with MoneySuperMarket, we compare deals from a panel of suppliers and talk you through what the options mean for your business.

Business energy vs household energy FAQs

Got more questions about business energy and home energy? Check out the answers to our most frequently asked questions.

Is business energy cheaper or more expensive than household energy?

Unit rates for business and household energy are often similar. The bigger cost difference comes from VAT, which is 20% for most businesses compared with 5% for households, and from the lack of a price cap.

Can I get a cooling-off period on a business energy contract?

Not automatically. Domestic customers get a 14-day cooling-off period by law; most business contracts don't include the same right once signed. Check your supplier's terms before you commit.

Does the energy price cap apply to businesses?

No. Ofgem's price cap only covers domestic customers on standard variable tariffs. Business rates are set by the market and by individual supplier pricing, with fixed contracts offering the main form of protection.

Can I combine my business gas and electricity into one bill?

Some suppliers offer dual fuel deals for smaller businesses, but it's less standard than in the household market. It's worth asking directly when you compare quotes, as availability varies by supplier and usage.

What happens if I don't switch before my business contract ends?

You're usually moved onto a deemed or out-of-contract rate, which tends to be significantly higher than a negotiated deal. Diarising your renewal window, typically 30 to 90 days before your end date, helps you avoid this.

How do standing charges differ between business and household energy?

Both markets charge a daily standing charge alongside the unit rate. Business standing charges vary more by supplier, site type and meter, whereas household standing charges are set within the Ofgem price cap.

Compare business energy with MoneySuperMarket

Business energy runs on its own rules, but comparing your options doesn't need to be complicated. When you get a quote with MoneySuperMarket, we compare business energy deals from trusted UK suppliers and talk you through what fits your usage. Compare business energy to see current rates for your business.

Need a household energy quote? Run an energy comparison at MoneySuperMarket.