What is the average business gas price per kWh in the UK?

Business gas in the UK typically prices between 6p and 9p per kWh for small and medium consumers, with larger sites on higher annual volumes sometimes seeing rates below that range. As with electricity, there is no fixed national rate, and any figure quoted should be treated as a starting point rather than a promise.

Gas is generally cheaper per kWh than electricity because it involves less conversion and transportation loss, and because network and levy costs added to gas bills are typically lower as a proportion of the total than they are for electricity.

The main driver of the wholesale gas price is the balance of European and global supply against demand, which is affected by weather, gas storage inventories, and the availability of liquefied natural gas shipments into UK and European terminals. A cold winter forecast or a supply disruption abroad can move UK business gas prices even though the business buying it has no exposure to that market directly.

Standing charges for gas cover the fixed cost of maintaining your meter and the pipeline connection to your premises, and are charged daily regardless of how much gas you use. For a low-usage business, the standing charge can represent a disproportionate share of the annual bill, which is why total annual cost matters more than the headline unit rate.

Worked example: a small bakery using 25,000 kWh of gas a year at 7.5p per kWh spends £1,875 on the commodity element. Add a standing charge of 30p a day, which is £109.50 a year, and the pre-VAT total comes to roughly £1,985. A supplier quoting 6.8p per kWh on the same volume and standing charge would bring the total closer to £1,809, a saving of around £176 a year.

Contract length affects gas pricing in a similar way to electricity. Suppliers pricing a longer fix build in their own view of the forward market over that period, so a three-year fix is not automatically cheaper or more expensive than a one-year fix, it depends entirely on the shape of the market at the point of quoting.

Larger gas users on half-hourly equivalent settlement, generally those consuming above 73,200 kWh a year, are billed with more granular data and often gain access to more competitive commercial terms because suppliers can manage the risk on those accounts more precisely.

The Climate Change Levy applies to business gas as it does to electricity, and is charged per kWh on top of the unit rate for most businesses, with reliefs available for some energy-intensive sectors and users below minimum thresholds. VAT at 20% typically applies, though some businesses qualify for the reduced 5% rate.

One practical check any business can run is to calculate its own blended gas rate from the last full year of bills, by dividing total commodity cost by total kWh consumed, and use that figure as the baseline for judging new quotes rather than relying on the rate shown on a single invoice, which can be skewed by estimated readings.

Gas prices also tend to show more day-to-day volatility than electricity, particularly around the winter heating season, so timing a renewal to avoid buying in the coldest weeks of the year, when demand and price both spike, can make a measurable difference.

Because gas and electricity markets move independently of each other, it is common for the best gas supplier and the best electricity supplier for a given business to be different companies. Tendering both fuels separately, rather than assuming one supplier will offer the best deal on both, typically produces a better overall outcome.

Because gas heating demand is so weather-dependent, a single unusually cold or unusually mild winter can shift the following year's average quoted rate noticeably, even without any change in the underlying supply and demand fundamentals over the longer term. This is one of the reasons a business gas quote obtained in January can differ meaningfully from one obtained in July for identical consumption, independent of anything the business itself has done differently.

Businesses with gas-fired catering equipment, commercial kitchens or process heating tend to have flatter, more predictable consumption through the year than those relying on gas purely for space heating, and this steadier load profile is sometimes reflected in a marginally sharper quote, since it removes some of the seasonal risk a supplier has to price in.

As with electricity, gas bills usually carry VAT at 20%, dropping to 5% for businesses using very little gas day to day or where a large share of the premises is put to domestic or charitable use. The Climate Change Levy applies per kWh alongside VAT, with a limited number of energy-intensive gas users able to claim relief under a Climate Change Agreement.

Businesses using gas mainly for space heating tend to sit at the lower end of typical volume bands, often a few thousand to tens of thousands of kWh a year for a small office or shop, rising well into six or seven figures for a site running boilers, ovens or process heat continuously, and it is at that upper end, above 73,200 kWh a year, that gas moves onto half-hourly equivalent settlement.

The lesson that applies specifically to gas is to start shopping the market before the coldest weeks hit, since suppliers price more cautiously and gas demand, and price, both climb through winter. Aim to have a new contract agreed with several weeks of runway before your current one lapses, so you are never forced into a rushed decision during a cold snap.