If you’re a UK business owner responsible for gas costs, comparing tariffs can help you understand whether your current deal still suits the way your business operates.
A useful comparison looks beyond the headline price. Contract length, renewal timing, usage and the way charges are structured can all affect what you pay.
This guide explains what to compare, when to review your contract and how Business Utility Hub (BUH) can help you assess suitable business gas deals before you commit.
What affects business gas prices?
Business gas prices are tailored to the organisation taking out the energy contract. This is one reason business energy works differently from many domestic energy tariffs.
Your quote can be influenced by:
- How much energy your business uses.
- Your business premises and location.
- Contract length and start date.
- The type of tariff or supply agreement.
- Wholesale energy prices at the point the contract is priced.
- Standing charges, network costs and other non-commodity costs.
- Your meter and supply information.
Two businesses can therefore receive different business energy quotes from the same energy supplier. A manufacturer with high, consistent gas consumption may have very different requirements from a restaurant or care home using gas around operating hours and seasonal demand.
This is why the most useful comparison is based on your own business address, annual usage and current contract position.
What should you look at when comparing business gas tariffs?
A good comparison should show you the overall commercial position, not just one attractive-looking unit rate.
When reviewing business gas contracts, compare:
- Unit rate: the price you pay for each kilowatt hour (kWh) of gas used.
- Standing charge: the daily charge applied regardless of how much energy you use.
- Estimated annual cost: based on your expected annual energy usage.
- Contract length: how long you will be tied into the agreement.
- Fixed or variable pricing: whether your rates remain stable or can change.
- Exit fees: any charge that may apply if you leave early.
- Contract end date and notice period: when you need to act before the current deal finishes.
- Other contract terms: including payment arrangements and any charges that can change during the agreement.
Looking at these points together makes it easier to compare business energy prices on a like-for-like basis. BUH can compare business gas prices and contracts from trusted UK business energy suppliers and explain the differences clearly.
Fixed vs variable business gas contracts
The right contract structure depends on how much price certainty and flexibility your business needs.
Fixed business gas contracts
A fixed contract usually agrees key energy prices for a set term. This can make budgeting easier because the contracted element of your gas price is more predictable.
However, “fixed” does not always mean every part of the bill is fixed. Some contracts allow certain network costs, taxes or other charges to change, so check the full contract terms before agreeing a new deal.
Variable business gas contracts
A variable contract allows rates to move in line with market conditions or the supplier’s pricing structure. This creates greater exposure to changes in the energy market but can provide more flexibility in some arrangements.
Larger businesses with more complex purchasing requirements may also consider flexible or market-linked approaches. The important point is to understand how the contract works and which costs can change.
How long is a business gas contract?
There is no single standard contract length for every business. Ofgem explains that business energy contracts can last for up to five years, although the options available will depend on the energy supplier, your usage and the type of deal being offered.
A shorter fixed term may give you an earlier opportunity to review the market again. A longer fixed deal can provide more certainty over the agreed pricing structure, but it also means committing for longer.
Before choosing a term, consider how important budget stability is to your business, how your energy usage may change and how comfortable you are committing at current energy prices.
What is the notice period on a business gas contract?
The notice period is the amount of notice you may need to give your current supplier before the energy contract ends or renews. It is not the same thing as the contract end date.
There is no universal notice period across all business energy contracts. Check your current contract for the notice deadline, renewal window and any termination notice requirements.
For microbusinesses, different protections can apply. Citizens Advice notes that some evergreen contracts can require up to 30 days’ notice and that suppliers should contact microbusiness customers about their switching options before a fixed term ends. You can read its guidance on switching business energy suppliers.
For larger businesses, the terms of the existing contract are particularly important. Missing a notice deadline can limit your options or leave you exposed to rollover or out-of-contract rates.
What happens when a business gas contract ends?
What happens next depends on your current supplier and the terms of your contract.
If no new contract has been arranged, you may move onto out-of-contract rates or another default arrangement. These rates are not necessarily designed around your business energy needs and may offer less price certainty than a negotiated new contract. Research found that deemed and out-of-contract electricity prices for microbusinesses were, on average, 80% higher than negotiated contract rates.
A deemed contract is slightly different. It can apply when a business starts using energy at premises without having agreed a contract with the existing supplier, for example after moving into a new site.
The best approach is to know your contract end date and renewal window before your current deal expires. This gives you time to compare energy deals and understand the available options rather than making a rushed decision once the contract ends.
When should you compare business gas tariffs?
You do not need to wait until the final days of your current deal to understand your options.
Reviewing your position ahead of the contract end date gives you time to check current business energy prices, understand your notice requirements and decide what type of new contract may suit your operations.
Market timing matters because wholesale energy prices can move. BUH monitors the business energy market daily, so we can help you understand how available energy deals compare with your current position rather than relying on a single snapshot taken at renewal.
Guidance on negotiating better rates for business gas
Securing a better business gas deal starts with having the right information and comparing contracts on the same basis.
Before considering a new energy deal:
- Check your annual gas usage from recent energy bills.
- Confirm your current energy supplier and contract end date.
- Know your Meter Point Reference Number (MPRN), which identifies your gas supply.
- Compare unit rates and standing charges together.
- Check the notice period, fixed term and exit fees.
- Understand which charges are fixed and which may vary.
- Compare more than one suitable supplier where possible.
This gives you a clearer basis for assessing whether a new deal offers genuine value.
BUH can handle this comparison for you. We review your current deal, compare suitable business energy deals across our supplier network and explain the commercial differences without unnecessary jargon. Where appropriate, we can also negotiate with suppliers based on your usage, contract requirements and renewal position.
Can you switch business energy suppliers during a contract?
Usually, the existing energy contract determines when you can switch suppliers. Ofgem states that most energy suppliers will not let a business switch before the end of its contract. Early termination may also involve exit fees depending on the agreement.
This makes the renewal window important. If you want to switch business energy suppliers, first check when your current contract ends and whether any notice needs to be given before that date.
Once you are free to switch, a new supplier can take over the energy supply in line with the agreed start date. If you are unsure about your contract position, BUH can review it before you commit to another agreement.
Are business gas tariffs protected by the energy price cap?
No. Ofgem’s energy price cap does not protect customers with a business energy contract. The cap is primarily a domestic energy protection for certain household tariffs. Business energy suppliers set commercial prices based on factors including wholesale costs, consumption, contract structure and market conditions.
That makes regular business energy comparison particularly important. There is no single regulated business gas rate that every company pays.
Do business gas contracts have a cooling-off period?
Most business contracts do not offer the same cancellation rights as domestic energy agreements. Ofgem states that there is no cooling off period after a business energy contract is agreed, including where the agreement is made over the phone.
That makes it important to check the price, contract terms, fixed term and exit fees before accepting a new contract. Ask for the terms in writing if you need time to review them.
Should you compare gas and electricity together?
Gas and electricity contracts are normally separate, and their end dates may not match. If you also buy business electricity, reviewing both supplies can make contract management easier. Your business electricity contract may have a different supplier, end date or renewal requirement.
Reviewing both fuels together can give you a clearer view of overall energy costs and upcoming renewals.
BUH can compare business gas and electricity contracts together or review each supply separately, depending on what your business needs.
How Business Utility Hub can help you compare business gas tariffs
Comparing business gas should make your next energy decision clearer, not create another time-consuming job for your team.
Business Utility Hub focuses on business gas and electricity. We monitor energy prices daily, review your current contract and compare suitable options from trusted UK business energy suppliers. We explain the unit rates, standing charges, contract terms and renewal requirements before you decide whether to proceed.
We support businesses with very different energy requirements. That includes SMEs comparing business energy deals as well as larger and energy-intensive businesses managing high consumption, multiple premises or more complex purchasing requirements.
Our team works with businesses across sectors including manufacturing, care homes, hospitality and retail. We look at how your organisation actually uses energy rather than treating every business as though its requirements are the same.
If you choose a new supplier, we can manage the switching process from start to finish. You will also have a dedicated account manager who understands your sites and contract dates and can support future renewals.
Our approach is transparent. Our approach is transparent. There is no obligation to switch, we explain contract terms clearly, and we're upfront about how we're paid. You can read more about our fees and commission on our transparency page.
Review your energy contract before you sign elsewhere
Call 0800 781 2700 or email savings@businessutilityhub.co.uk to speak to a business energy specialist and compare your current gas options.
