Here’s what you need to know about the types of meters and metering options, before switching to buy electricity from a retailer.

Types of Meter


There are two types of electricity meters:

a. Cumulative Meter
  • Most residential premises today use cumulative meters to measure electricity consumption. SP Group sends meter readers to your premises to record your electricity usage from cumulative meters.
  • Cumulative meters are read once every two months. On the month where your meter is not read, SP Group will estimate the month’s consumption based on a methodology approved by the Energy Market Authority.

b. Smart Meter (otherwise known as Advanced Metering Infrastructure (AMI) Meter)
  • Smart meters (i.e. AMI meters) allow electricity consumption to be measured and remotely read at half-hourly intervals. With smart meters, manual reading and estimation of electricity consumption will no longer be required.
  • Consumers with smart meters can view and download their half-hourly electricity usage when they sign up for an e-Services account.
  • There are two types of AMI meters – single-phase and three-phase. The type of meter required for your premises depends on your premises’ voltage intake level. Residential consumers typically require single-phase AMI meters.

You may wish to contact SP Group at choice@spgroup.com.sg or 1800-233-8000 to find out which type of meter is installed at your premises. 


Households


If you wish to switch to a retailer (after the electricity market has opened up), you have the following metering options:

  • Install a smart meter to measure and remotely read your actual consumption on a half-hourly basis (a charge will apply); or
  • Retain your existing meter and adopt a load profile to estimate your half-hourly electricity consumption.

Do I Need a Smart Meter?


If you choose the Fixed Price Plan or Discount Off the Regulated Tariff Plan, you may not need a smart meter. You can continue to use your existing meter.

If you choose a Peak and Off-peak Plan, you may consider installing a smart meter for tracking your electricity consumption every half-hour. A meter installation fee of $40 (before GST) will apply.

Alternatively, you can still retain your existing meter and use a load profile to estimate your consumption instead.

What is a Load Profile?


EMA has developed a load profile of the average household in Singapore. This load profile can be applied to the monthly electricity consumption of a household to derive your estimated half-hourly electricity consumption for billing purposes. EMA will periodically update the load profile to ensure that it remains reflective of the average household’s consumption.

Refer to the diagram below for the load profile of an average household.

Based on EMA’s study, households exhibit similar consumption patterns. As such, having a load profile is suitable for all households regardless of dwelling types. On the other hand, having a load profile is not feasible for businesses as they have different consumption patterns depending on the nature of business.

 



Source: Energy Market Authority


Businesses


If you wish to switch to a retailer or buy from the wholesale electricity market, you are required to install a smart meter (i.e. AMI meter) to measure and remotely read your half-hourly electricity consumption for billing purposes. A meter installation fee of $40 (before GST) will apply.
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