Metering Options

With Open Electricity Market in the second half of 2018, you will have the option of buying electricity from a retailer of your choice. In addition to customised price plans, there are also different types of meters and metering options to choose from.

Types of Meter

In general, there are two types of electricity meter:

a. Advanced Metering Infrastructure (AMI) Meter

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

b. Cumulative Meter
  • Most residential premises today use cumulative meters to measure electricity consumption. SP Group (SP Services) sends meter readers to your premises to record your electricity usage from cumulative meters.
  • Today, cumulative meters are read on a bi-monthly basis. On the month where the meters are not read, SP Group (SP Services) will estimate the month’s consumption based on the methodology approved by the Energy Market Authority.

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

Metering Options

Business consumers who wish to become contestable are required to install AMI meters to accurately measure and remotely read their half-hourly electricity consumption for billing purpose. A monthly meter charge of $1.83 per single-phase meter and $2.49 per three-phase meter is applicable. Residential consumers have the following metering option:

  • Install AMI meters to accurately measure and remotely read their half-hourly electricity consumption, and be subject to the monthly meter charge; or
  • Retain their existing cumulative meters and adopt a Load Profile to estimate their half-hourly electricity consumption.

What is Load Profiling?

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

Refer to the chart below for the load profile of an average residential consumer.


Source: Energy Market Authority

Based on EMA’s study, residential consumers exhibit similar consumption patterns. As such, Load Profiling is suitable for all residential consumers regardless of dwelling types. On the other hand, Load Profiling is not feasible for business consumers as they have different consumption patterns depending on the nature of the business.
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