Wednesday, February 10, 2010

Calculating Electricity Charges and Usage in Malaysia

Recently, I am having quite a lot of things on my side to be done and I find that I neglected my blog for quite a long time. Sorry to all readers who are following my blog. Today, I am going to talk about electricity, the charges and the way to calculate electricity charges as well as usage in Malaysia.

For quite a long time, I have been wondering how is the electricity is calculated and how much charges are incurred on electricity. I have fond some useful detail and I would want to share it with all of you who are reading my blog. So, read on, prepare a piece of paper and a calculator, try to calculate your monthly electricity usage and charges.

Tariff Sarawak Electricity Supply Corporation (SESCO) (Domestic):
1st 100 units ----------------------- RM 0.34 per unit
Next 300 units ---------------------- RM 0.29 per unit
For each additional unit per month -- RM 0.33
Minimum Charges --------------------- RM 5.00
Reference: SESCO Tariff

Tariff Tenaga Nasional Berhad (TNB):
1st 200 units ----------------------- RM 0.218 per unit
Next 200 units ---------------------- RM 0.334 per unit
For each additional unit per month -- RM 0.334
Minimum Charges --------------------- RM 3.00
Reference: TNB Tariff

From the table above, we can see that it is quite a large different in tariff rate in West Malaysia and East Malaysia. So, please refer to the correct table to calculate the charges.

Now, let us proceed to examples. I give 3 examples here, I hope that you will be able to understand and if I did it wrongly, please let me know.

Example 1:

If we are using 14W bulb such as a Phillip bulb for 5 hours a day.

The calculation is as below:
14W x 5 hours / 1000 = 0.07 kWh

SESCO:
Charge for 5 hours = 0.07 x RM 0.34 = RM 0.0238

TNB:
Charge for 5 hours = 0.07 x RM 0.218 = RM 0.01526

It is quite a small amount of money for 5 hours per day. If you are to calculate it for a period of one month with several 14W bulbs operating at 5 hours per day, then the amount will add up.

1 month with if using five 14W bulbs:
SESCO:
Charges per month = 5 bulbs x RM 0.0238 x 30 = RM 3.57

TNB:
Charges per month = 5 bulbs x RM 0.01526 x 30 = RM 2.289

Ok, that is for 5 light bulbs.

Example 2:
Next, we calculate the charges for using a 55W standing fan. Since Malaysia is quite hot during the day when it is not raining, I choose to use 10 hours per day for using standing fan.

The calculation will be:
55W x 10 hours / 1000 = 0.55 kWh

SESCO:
Charge for 10 hours = 0.55 x RM 0.34 = RM 0.187

TNB:
Charge for 10 hours = 0.55 x RM 0.218 = RM 0.1199

That is for calculation of 1 day period.
For 1 month period:
SESCO:
Charges per month = 1 fan x RM 0.187 x 30 = RM 5.61

TNB:
Charges per month = 1 bulbs x RM 0.1199 x 30 = RM 3.597

Ok, there is the cost of using 1 standing fan for 10 hours per day and I am sure you will be using more than 10 hours.

Example 3:
Now, let us calculate the cost of using air-condition (10000BTU that is 1200W) at night when you sleep. Let say you sleep at 11pm and wake up at 6am, that would be 7 hours per day.

The calculation is as below:
1200W x 7 hours / 1000 = 8.4 kWh

SESCO:
Charge for 7 hours = 8.4 x RM 0.34 = RM 2.856

TNB:
Charge for 7 hours = 8.4 x RM 0.218 = RM 1.8312

For 1 month period:
SESCO:
Charges per month = 1 aircon x RM 2.856 x 30 = RM 85.68

TNB:
Charges per month = 1 aircon x RM 1.8312 x 30 = RM 54.936

Done. That is the cost of using 1 air-condition for 7 hours a day for 1 month. I don't think that you are using only 1 air-condition at home right? Most people have more than 1 air-condition at home that is operating at the same time.

Summary of Monthly Electric Charges of Above Example:
SESCO:
Light bulbs = RM 3.57
Standing Fan = RM 5.61
Air-Condition= RM 85.68
----------------------------
RM 94.86

TNB:
Light bulbs = RM 2.289
Standing Fan = RM 3.597
Air-Condition= RM 54.936
----------------------------
RM 60.822

So, that is the payment per month.

In conclusion, it is important to use energy wisely or else you will be spending more on utilities bills. Use energy wisely and save money for your investment.

Remember: We have not calculated refrigerator that operate 24 hours a day, water heater, electric oven or microwave oven, television, radio, computers, electric kettle and so on and so forth. In other words, the monthly payment for electricity will be quite high.

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Volta thought that electricity was produced by contact between the two metals rather than as a result of chemical reaction. His invention would remove the study of electricity from the realm of curiosity and propel it directly into scientific laboratories. In France, André-Marie Ampère, professor of chemistry and physics, also drew on work by another researcher, Christian Oersted. In1820, this Danish physicist discovered that an electric current produced a magnetic field. A few weeks after the announcement of Oersted's results, Ampère succeeded in making a coil (solenoid) to create a magnetic field.
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