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HOW YOUR BILL IS ESTIMATED ONNON-READING MONTHS
Your meters are read once every two months by our meterreaders.
During the months when your meters are not read, weestimate your
utilities consumption by taking the average daily
usage between the last two actual meter readings. When themeters
are next read, the under or over-estimation in your billswill be
adjusted accordingly.
Here is an example:
Actual meter reading for 5 March 53,678Actual meter reading for
5 May 54,794Actual electricity consumption from 1,116 kWh5 March to
5 May (54,794 - 53,678)Number of days for the billing
period 62 daysfrom 5 March to 5 MayAverage daily consumption
18 kWh(1,116 units / 62 days)
As meters are read every other month, your meter will not be
read in June in the example above. Your estimated consumpt
ionwill be calculated by multiplying the above daily consumptionby
the number of days in the current billing period.
Number of days for the billing period 31 daysfrom 6 May to 5
JuneEstimated usage for the billing period 558 kWhfrom 6 May to 5
June (18 units x 31 days)
When the meters are next read in July, you will be billed
theusage between May and July readings, less what was already
billed in June.
Actual meter reading for May 54,794Actual meter reading for July
56,036
Consumption from May to July 1,242 kWh(56,036 -
54,794)Consumption already billed in June bill 558 kWhBalance
consumption that will be billed 684 kWhin July bill (1,242 -
558)
UNDERSTANDING THE UPS AND DOWNS OF YOUR UTILITIES BILL
*Please refer to your utilities bills on details to submit your
own meter reading.
Find out more about energy efficiency tips and how to conduct a
home energy audit atwww.spservices.com.sg.
The audit will help you better understand the major
components of your electricity usage at home.
For water saving tips, please visit PUB’s website at
www.pub.gov.sg .
Use uorescent or energy-saving lamps
and clean them oen
ENERGY EFFIENCY TIPS
Set your air-condioner thermostat at
25°C, set the mer to reduce the hours of
usage and clean the air lters regularly
Use fans instead of air-condioners
Switch o your water heater aer use
Choose energy ecient appliances bychecking their energy
labels
Understanding the
UPS and DOWNof Your Utlites Bill
SUBMIT YOUR OWN METER READINGS
If you do not wish to be billed based on estimation, weencourage
you to record your own meter readings and submitthem* for billing
during months when your meters are not read.
You can submit your meter readings through our new SPServices’
mobile app and use it to discover more ways to saveon your energy
and water usage.
Alternatively, you may also submit your own meter readingsvia
our:•••
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When your meters are next read in July, your July bill show a
signifcant increase compared to the Junebecause it reects:
A. The higher consumption in July, andB. An adjustment of the
under-estimated consumption
June.
Other possible causes of a high bill include:
• Higher usage due to school holidays or more occupbeing home
during the period,
• More days in the billing period which can vary from 232
days,
• Tariff changes,• New or additional appliances installed,
and/or • More frequent baths or higher laundry loads.
Utilities consumption varies from month to month,resulting in
fuctuations in the monthly utilities billamount. Several factors
can affect your consumption.
HOT WEATHER
During the hotter months of the year, usually from April
toAugust, there tends to be increased usage of appliances suchas
air-conditioners and fans. People would take more showersas well,
resulting in higher household electricity and waterconsumption.
Even when daily activities and lifestyle remain the same
duringthis period, electricity consumption of appliances such as
air-conditioners could be higher. Compared to cooler months,hotter
weather and higher outdoor air temperatures create agreater load on
air-conditioners in order to maintain the desiredindoor
temperature.
ADJUSTMENT ON ESTIMATED
CONSUMPTION
Utilities meters are read once every other month. For example,if
your meters are read in May, they will not be read again untilJuly.
Your June bill will be estimated by multiplying the averagedaily
consumption, calculated from the actual meter readingsrecorded in
March and May, by the number of days in thecurrent billing period
(please see overleaf for an example).
Compared to the cooler weather in April and May, June is
arelatively hotter month that usually sees an increase in
electricityusage. Hence, the estimated usage for June (based on
actualmeter readings recorded in March and May) could likely
belower than your actual consumption.
100
0
200
300
400
500
600 31.5
29.5
27.5
25.5
23.5
21.5
19.5
17.5
15.5Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Apr May Jun Jul Aug
4 2 1
4 0 3
4 0 0
4 6 2
4 9 7
5 1 8
5 0 8
5 1 1
4 7 6
4 6 4
4 8 8
4 5 3
26.2 27.227.9 28.2
28.629.0 28.7 27.7 28.5 28.4
27.527.1
Average Monthly Electricity Consumption for Homes
and Average Mean Temperature in 2014*
Meter Reading Taken on Odd Months
UNDERSTANDING THE UPS AND DOWNS OF YOUR UTILITIES BILL
For instance, if an air-conditioner is set at 24°C and
theaverage ambient (i.e. outdoor) temperature increases from26°C to
28°C, the air-conditioner will consume more energy tomaintain the
indoor air temperature at 24°C.
CONTACT US
General Enquiries on Utilities 1800 222 2333
(Mon to Fri – 8am to 6pm, Sat – 8am to 1pm)
Email [email protected]
Fax 6304 8229
Breakdown of Electricity Supply 1800 778 8888 (24 h
Problems with Water Supply 1800 284 6600 (24 hrs)
Breakdown of Piped Gas Supply 1800 752 1800 (24 *Average
monthly electricity consumption is derived from the electricity
consumption data for all HDB and Private Properties
only Please visit www.spservices.com.sg for information
on the national average monthly consumption by premise types
e s t i m a t e d
e s t i m a t e d
e s t i m a t e d
Amount
under-billed
in JunAmount
under-billedin Jun
Average Consumption (kWh) Mean Temperature (oC)
