Financial decisions rarely happen in a vacuum, and that principle applies just as much to a business gas contract as it does to any larger, more obviously significant investment a company makes. Most businesses sign a gas contract once, during the scramble of setting up a new premises, and then never revisit it again until the renewal notice arrives, if it arrives at all.
Why Business Gas Is Easy to Overpay For
Unlike household gas, which is protected by a price cap, commercial gas in the UK is priced entirely through negotiated contracts. Typical rates in 2026 run somewhere around 6.5p to 9p per kWh depending on business size and usage, plus a daily standing charge that usually falls between roughly 25p and 45p.
1. Check Whether You’re on a Fixed or Variable Rate
A fixed-rate contract locks in the unit rate for the length of the term, typically between one and five years. A variable rate moves with the wholesale market, which can be more volatile given the absence of a commercial price cap.
2. Compare the Standing Charge, Not Just the Unit Rate
A low headline unit rate paired with a high standing charge can end up costing more over a year than a slightly higher rate with a lower standing charge, especially for businesses with lower overall usage.
3. Know Your Renewal Notice Period
Most business gas contracts require notice, often well in advance, if you want to switch suppliers at the end of the term. Missing that window typically means rolling onto a deemed or out-of-contract rate.
4. Confirm What VAT Rate You’re Actually Paying
Business gas is typically charged at the standard 20% VAT rate, but businesses using low volumes of gas, under 5,000 kWh a year, or qualifying as a charity or for non-business use, may be eligible for the reduced 5% rate.
5. Get an Independent Comparison Before You Sign Anything New
Comparing quotes across multiple suppliers, rather than accepting whatever renewal offer arrives first, is the step that actually determines whether a renewal saves money or simply locks in another uncompetitive term for another one to three years. This is where a specialist consultancy can help considerably. Green Light Consultancy Group compares business gas prices across the UK’s leading suppliers, checking unit rates, standing charges and contract terms together to find the deal that costs the least over the entire term.
Making This a Regular Habit
None of these checks require specialist financial training. They simply require a bit of organisation and a habit of reviewing the contract well before it renews, rather than after the renewal has already locked in another year or more of an uncompetitive rate.
Why This Matters More for Growing Businesses
The financial impact of an uncompetitive gas contract scales with usage, so a rate that was only mildly wasteful for a small premises becomes a considerably larger drain once a business expands.
Frequently Asked Questions
How much does business gas typically cost per kWh in the UK?
Most UK businesses pay somewhere between 6.5p and 9p per kWh in 2026, with larger, daily-metered users typically at the lower end of that range.
What is a standing charge and why does it matter?
It is a fixed daily fee charged regardless of how much gas is used, and a low unit rate combined with a high standing charge can cost more overall.
What happens if a business misses its gas contract’s renewal notice period?
It typically defaults to a deemed or out-of-contract rate, priced well above what could have been negotiated in advance.
Can a business get a reduced VAT rate on gas?
Yes, businesses using less than 5,000 kWh of gas annually, or qualifying as a charity or for non-business use, may be eligible for the reduced 5% VAT rate.
Is it worth using a consultancy to compare business gas suppliers?
For businesses without the time to track commercial gas market movements, a specialist consultancy typically finds better terms more efficiently.
