Math€mati¢$ in Pra¢ti¢a£ $ituation: Utility Bills

\[ Amount\;Payable = Usage \times Rate\]

Understand Your Utility Bill

	1 SUMMARY The bill charges are for the period reflected here (i.e. 01 Jun 2011 to 30 Jun 2011, as shown in the sample bill).
	2 DUE DATE / GIRO PAYMENT For GIRO customers, deductions for utilities bills are made automatically from their bank accounts on the due dates.
	3 METER READING Your utilities meters are read once every two months. In the months when your meters are not read, we estimate the consumption based on the previous actual consumption. If your meters are inside your premises and you are not in for our meter readers to take the readings, your consumption will be estimated. Adjustment will be made when your meters are next read.
	4 CONSUMPTION UNITS This reflects the number of units of water, electricity and gas (if applicable) you have used in the period covered by the bill. If there is a tariff revision which falls in between your billing period, the charges will be pro-rated accordingly. The old tariff rate shall be used for the consumption incurred in the period before the new tariff rate is effective. The new tariff shall be used for the consumption incurred in the period on or after the new tariff rate is effective.
	5 TARIFF RATES These refer to the tariff rates per unit of electricity (kWh), water (m³) and gas (kWh). The electricity tariff for households is 26.70¢/kWh (from 1 Apr 13 to 30 Jun 13). The gas tariff for households is 21.26¢/kWh (from 1 May 13). The water tariff (since 1 Jul 2000) for households is $1.17/m³ (40m³ and below) and $1.40/m³ (above 40m³). Electricity tariffs are regulated by the Energy Market Authority (EMA) and revised quarterly to reflect the actual cost of electricity. SP Services buys electricity on behalf of customers and pays the gencos, transmission licensee and other market players based on the rates of the various cost components as approved by EMA. There are 4 main cost components in the electricity tariff. They are:- Energy Cost: This is paid to the generation companies. This component is adjusted quarterly to reflect change in the cost of electricity. Network Cost: This is paid to SP PowerAssets. This fee is reviewed every year. Market Support Services Fee: This is paid to SP Services. This fee is reviewed every year and has been reduced by 21% since Jul 2009. Market Admin & PSO Fee: This is paid to EMC (Energy Market Company) and PSO (Power System Operator). This fee is reviewed every year to recover the costs of operating the electricity wholesale market and power system.
	6 SANITARY APPLIANCE FEE & WATERBORNE FEE The Sanitary Appliance Fee (SAF) and the Waterborne Fee (WBF) are levied to offset the cost of treating used water and for operating and maintaining the used water network. The Sanitary Appliance Fee is a fixed component based on the number of sanitary fittings in each premise whereas the Waterborne Fee is charged based on the volume of water supplied, regardless of location and end use of the water. Both charges are imposed as a tax contribution to Singapore's national used water system. Since 1 Jul 2000, the Sanitary Appliance Fee is charged at $2.8037 per fitting per month and the Waterborne Fee is charged at $0.2803/m³.
	7 REFUSE REMOVAL Charges for refuse removal vary depending on the type of premises and the geographical location. The National Environment Agency has appointed SembWaste Pte Ltd, Veolia ES Singapore Pte Ltd, Colex Holdings Ltd, and 800 Super Waste Management Pte Ltd as refuse collectors for different geographic locations in Singapore.
	8 WATER CONSERVATION TAX A water conservation tax is charged for the use of water. It is levied by the Government to reinforce the importance of conserving water. For domestic usage (from May 2009), the first 40m³ of water consumed, the tax rate is at 30%. The remaining amount of water (above 40m³) consumed, the tax rate is at 45%.
	9 BAR GRAPHS FOR PAST CONSUMPTION These graphs reflect your electricity, gas and water consumption. They allow you to monitor the usage pattern of each utility service. It also shows the national average usage which allows you to compare it against your own usage.