Electricity tariffs will decrease by an average of 2.1 per cent from today to Dec 31 compared with the previous quarter, said SP Group.

This works out to 20.30 cents per kilowatt hour (kwh) of electricity for this quarter, compared with 20.72 cents from July to September.

The decrease is due to the lower cost of natural gas for electricity generation as well as lower non-fuel costs, said SP Group in a statement yesterday.

Families living in four-room Housing Board flats will see a decrease of $1.59 in their average monthly electricity bill, the statement added.

Electricity tariffs are reviewed quarterly based on guidelines set by the Energy Market Authority, the electricity industry regulator, said SP Group.