Business gas prices explained: how your commercial gas rate is built

A business gas price is built from several layers, and understanding them explains why the rate on your contract is not simply set by one supplier's whim. The main components are wholesale commodity cost, network transportation charges, government levies and supplier costs.

Wholesale gas cost is what the supplier pays on the open market to secure the gas ahead of delivering it to you. This is influenced by UK and European storage levels, LNG import volumes, and demand, particularly from power generation and winter heating, all of which sit outside any individual business's control.

Network transportation charges cover the cost of moving gas through the national transmission system and then through the regional gas distribution network to your meter. These charges are set by the network operators and passed through by suppliers, and they vary somewhat by region.

The Climate Change Levy applies to most business gas consumption as a per-kWh charge, with reduced rates or exemptions for qualifying energy-intensive users and businesses below minimum consumption thresholds.

The standing charge is a fixed daily amount covering meter maintenance and account administration, independent of how much gas you actually use. For low-usage businesses this can form a large share of the total bill, which is why total annual cost matters more than the unit rate in isolation.

Supplier margin makes up the remaining, genuinely negotiable, part of the price. It reflects the supplier's cost of serving your account and the credit risk they assign to your business, which is why identical consumption can attract different quotes from different suppliers.

Worked example: on a rate of 7.5p per kWh, wholesale commodity cost might account for roughly 4p to 5p, network and policy costs around 1.5p to 2p, and the remainder supplier margin and administration, though this split shifts with wholesale market conditions.

Gas prices are typically more seasonal than electricity because heating demand drives a large share of UK gas consumption, meaning prices often firm up in the run-up to winter and can ease during warmer months, which is a useful factor to weigh when timing a renewal.

Fixed contracts lock in the rate for the agreed term, offering budget certainty, while flexible contracts track the wholesale market more closely and suit businesses able to manage price risk actively, generally larger gas users with dedicated energy management resource.

Because gas and electricity wholesale markets move independently, the cheapest gas supplier for a business is often not the cheapest electricity supplier, which is why tendering the two fuels separately, even if buying from the same account manager, usually produces a better overall result.

Unlike electricity, where the wholesale price is frequently driven by the marginal cost of gas-fired generation, gas wholesale prices respond more directly to storage and import fundamentals: how full European gas storage facilities are heading into winter, how much liquefied natural gas is arriving at UK and continental terminals, and how cold the weather outlook is running. None of this can be influenced by an individual business, but it explains why gas prices can move sharply on news that has nothing to do with UK domestic supply at all.

For businesses that use gas mainly for process heat rather than space heating, such as commercial bakeries or textile finishers, consumption tends to be flatter across the year, which can make these accounts more attractive to price competitively, since the supplier faces less exposure to the sharp winter peaks that drive risk into a typical heating-led gas contract.

Billing structure follows meter type on the gas side just as it does for electricity. Smaller supplies sit on standard meters read periodically, while larger sites above the half-hourly equivalent threshold move onto settlement based on much more granular daily consumption data, which suppliers can price against with greater precision.

Gas bills generally carry VAT at the standard 20% rate, with a reduced 5% rate available to low-volume users or premises where a substantial share of use is domestic or charitable rather than commercial. The Climate Change Levy is added per kWh for most business gas accounts, subject to the same narrow set of exemptions that apply across energy-intensive industry.

Typical annual gas volumes scale with the size and nature of the premises: a small office might use only a few thousand kWh for heating, a restaurant kitchen or care home considerably more, and a manufacturer running process heat or steam boilers can run into the hundreds of thousands of kWh, at which point the 73,200 kWh half-hourly equivalent threshold for gas comes into play.