Typical Domestic Consumption Values (TDCVs) are industry standard values for the annual gas and electricity usage of a typical domestic consumer. You’ll find them in energy suppliers’ communications, on their websites and on price comparison sites where they are used to calculate the cost of a typical energy bill.
Below you can view the current and revised typical domestic consumption values. Consumers can use these to more easily compare between supplier tariffs on a like-for-like basis. They provide a useful starting point, but it’s still important consumers find out what’s right for them by using their actual consumption where possible.
How are TDCVs calculated?
TDCVs are calculated based on data from the two most recent years available. So the figure is as representative as possible for the average customer, we use median consumption values for those years.
In January 2020, we published our decision on revised TDCVs, which took effect on 1 April 2020. Those revised TDCVs are shown in the table below.
| kWh | TDCVs | ||
| Gas | Low | 8,000 | |
| Medium | 12,000 | ||
| High | 17,000 | ||
| Electricity: Profile Class 1 | Low | 1,800 | |
| Medium | 2,900 | ||
| High | 4,300 | ||
| Electricity: Profile Class 2 | Low | 2,400 | |
| Medium | 4,200 | ||
| High | 7,100 |
Economy 7 peak / off-peak split
The average day / night split is used to calculate the typical bill for an Economy 7 customer, which can be used on price comparison websites. This allows consumers to estimate their annual bill when they do not know their actual consumption pattern. We provide more information in our 2020 decision letter on how consumption patterns vary between customers depending on, for example, their meter type.
Average peak/off-peak split for Economy 7 meters published 2017
|
|
Peak |
Off peak |
|
GB average |
58% |
42% |