There are two key components of the electricity tariff: fuel cost and non-fuel cost.

The fuel cost component for each quarter is calculated using the average of daily natural gas prices in the first two-and-a-half month period in the preceding quarter.

The non-fuel cost component reflects the cost of generating and delivering electricity to homes. It comprises mainly the grid charge, and the capital and operating costs of generation companies.

The fuel cost component of the electricity tariff for each quarter is calculated based on the average of daily natural gas prices in the first two-and-a-half month period in the preceding quarter.

Consequently, there is a time lag in the gas price reflected in the electricity tariff because changes in gas prices in the current quarter will only be taken into account in the next quarter's tariff. This means that any increase or decrease in gas prices in the current quarter will be reflected in next quarter's tariff.

Electricity meters are read bi-monthly. On those months when the meters are not read, your electricity usage will be estimated based on your past consumption. Any over or under estimation of the bill will be adjusted in subsequent bills when the meter reading is taken.

If your meter is located inside your premises, SP Services' meter readers will need to access your premises to read the meter.

If meter readers are unable to access your premises to take the meter readings, you will be given a "Door Lock Card" providing details to guide you in submitting your meter readings.

If you wish to submit your meter readings, you can do so via the following methods:

i. SP Services website (http://www.spservices.com.sg)
ii. SP Services' smartphone app
iii. Interactive Voice Response system (1800-2222-333)
iv. SMS MRSUBM to "98374797".

The Interactive Voice Response system also allows you to arrange for an appointment to read your meters to avoid being billed on estimates for a prolonged period.

Your utilities usage will be an estimation if SP Services did not receive your meter readings. Until SP Services' meter readers can record your meter readings, you will be billed based on your estimated usage.

You may also refer to the FAQs on SP Services' website if you wish to learn more about meter readings and bill estimation.

Natural gas is used to produce about 95% of Singapore's electricity, with the remainder generated from other sources such as diesel, waste incineration, coal and biomass.

In Singapore, the price of electricity is not subsidised. This is to price energy correctly so that consumers are incentivised to use electricity efficiently and avoid wasteful consumption.

The Government recognises that there are households which may face difficulties coping with the rising cost of utilities, and is ready to help them. In this regard, the Government assists HDB households with their utilities bills payment through the Utilities-Save (U-Save) scheme, with higher amounts of rebates going to lower-income households.

The average monthly electricity and gas consumption for the various household types can be found on SP Services' website. Under Homes (For residential use), please select "View National Average Household Usage".