Seasonal energy adjustment factors



It most cases it is preferable to create a profile item in /home/energy/quantity and set its season value rather than a creating a profile item in this category.


Profile items in this category convert a quarterly value for a season to a seasonally adjusted annual equivalent. For example, the algorithm multiplies a gas value for the summer quarter by a factor of 8.33 to obtain the annual figure. Simply multiplying a summer quarterly value by 4 would lead to an underestimate of the annual usage because energy consumption is lowest in the summer.

Note that no units for the fuel type is assumed. This means you can give the profile item a quarterly figure in any units, e.g. usage in litres or kWh or currency or even a quarterly CO2 figure, and it will return a monthly value in the same units.


If you use 1000 kWh of gas during autumn and want to know an equivalent annual total which includes seasonal weighting, you would create an item name=autumn&energy=gas, with usagePerQuarter=1000. The return value will be 8196 meaning that the annual equivalent is 8196 kWh.

Seasons and months

The mapping of months to seasons in this category reflects the assumptions made in the source data, but is not intuitive. As such, this category's authority is set to recommended. An alternative assignment (with identical data) is available in this category.

Y5SZJEQMU0PF autumn, electricity
I918QP4L1HJ1 autumn, electricityWithHeating
KZRNDH99UCBN autumn, gas
UULI5JNFCKSR autumn, oil
FFV7GYDC6OZA autumn, solidFuel
DOVKNRT66BXD spring, electricity
HVVYGL3AEQ09 spring, electricityWithHeating
1BJMHSR5KE1A spring, gas
XE8FGDTYKYWN spring, oil
G7SJ6QS7RPG1 spring, solidFuel
HE2077E34B9L summer, electricity
48CDN28TKGHI summer, electricityWithHeating
5GZH232PKWAQ summer, gas
D7O1ILB6XL7Y summer, oil
38EOQHURZNMR summer, solidFuel
E2HUSQEUND9G winter, electricity
UFIR70IFOWZQ winter, electricityWithHeating
QSMAO3U1TXMI winter, gas
JXAWTM13OD6D winter, oil
CKRBOHJN3GLD winter, solidFuel
Log in to perform calculations on this data
Name: Seasonal_energy_adjustment_factors
Full path: /home/energy/uk/seasonal
Parent Category: UK energy
Provenance: EST/defra2008