*Someone e-mail to me about electrical usage at house. Just want to share with you all. Anyway, have you forgotten how to calculate electricity bill ?*

Here is a simple example to help you calculate electricity consumption. Let's assume you have one 100watt light bulb switched on for one hour. This will consume 100 watts per hour or 0.1 kilowatt hours (a kilowatt being 1000 watts). If you had ten 100watt light bulbs switched on for one hour your consumption would therefore be 10 x 100watts = 1000watts which is 1 kWh. You could then look at your electrical suppliers rate per unit (kWh) and see what the actual costs incurred are.

Do you know what contributes to your monthly electricity bill?

For those in Semenanjung Malaysia, TNB’s tariff is approximately 30 sen to 45 sen per kilowatt-hour (kWh), depending on your usage. The more you use, the more expensive the rates!

Below is a short table of common electrical appliances, and a rough estimate on how much they cost to run for every hour.

(The cost may seem low, but remember, even using

**means that you will be paying about**

__3 sen/hour__**if you leave it on for 24 hours a day!)**

__RM 20 a month__Appliance | Estimated cost (sen/hour) |

Fluorescent lights | 1 sen |

Wireless Router | 1 sen |

ASTRO decoder + dish | 2 sen |

Table Fan | 2 sen |

Incandescent lights | 3 sen |

Ceiling Fan | 3 sen |

Computer (laptop) | 5 sen |

CRT (‘normal’) TV (21 inch) | 3 sen |

LCD TV (32 inch) | 7 sen |

Computer (desktop) | 9 sen |

Plasma TV (42 inch) | 10 sen |

Washing Machine | 15 sen |

Vaccuum Cleaner | 17 sen |

Electrical Clothes Iron | 33 sen |

Electric Hot Plate | 46 sen |

Air Conditioning | 46 sen |

Electric Water Kettle | 50 sen |

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