How consumption bands shape gas rates
Suppliers typically group business gas customers into bands based on estimated annual consumption, often loosely categorised as micro, small and large users. A business using under roughly 25,000 kWh a year sits in a different pricing tier to one using several hundred thousand kWh, and the unit rate per kWh tends to decrease as you move into higher consumption bands.
Why gas rates rarely vary by time of day
Gas network and storage costs do not fluctuate by time of day in the same way electricity generation costs do, so most business gas tariffs apply a single unit rate across all consumption, day or night. This makes gas comparisons somewhat simpler than electricity, since the main variables are the unit rate, standing charge and contract length rather than time-banded pricing.
Illustrative gas rate ranges by consumption band
| Consumption band | Approx annual usage | Typical unit rate range |
|---|---|---|
| Micro | Under 25,000 kWh | 6p to 10p per kWh |
| Small | 25,000 to 293,000 kWh | 5p to 8p per kWh |
| Large | Over 293,000 kWh | 4p to 7p per kWh |
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Standing charges within gas rates
The standing charge on a gas contract is a fixed daily fee covering costs unrelated to actual consumption, such as network access and metering services. For very low-usage businesses, the standing charge can represent a meaningful share of the total bill, so a slightly higher unit rate with a lower standing charge sometimes works out cheaper overall than the reverse.
What affects a business gas rate
- Annual consumption band and how close usage sits to the next band threshold
- Contract length, with longer terms sometimes priced at a premium for certainty
- Region, since network transportation charges vary by area
- Payment method, as direct debit is often priced more favourably than invoice billing
- Credit standing of the business, particularly for newer companies
Reviewing your gas rate at renewal
Because gas rates are tied to wholesale market conditions at the point of quoting, the rate available at renewal will not necessarily match your previous contract, even if your consumption has not changed. Comparing your renewal quote against the wider market, rather than accepting the first offer, is the most reliable way to check it remains competitive.