Information About Electricity

How to Calculate Electricity Costs at Home

10 June 2024

Calculating electricity costs at home is an important step to managing your finances and ensuring efficient electricity consumption. By knowing how to calculate electricity costs, you can manage your energy usage and minimize expenses.

This article will explain how to calculate electricity costs in a simple yet easy-to-understand way. Let's take a look!

The first step in calculating electricity costs is to understand the current electricity tariff class. Electricity tariffs in Indonesia vary based on the customer class determined by PLN. Some common electricity tariff groups include:

Tariffs for households with 1,300 VA and 2,200 VA.

Tariffs for households with power from 3,500 VA to 5,500 VA.

Tariff for households with power of 6,600 VA and above.

The tariff per kWh varies depending on the tariff class and the latest information can be seen on the official PLN website or on your electricity bill.

It is important to check and record the use of electrical equipment at home to calculate electricity costs more accurately. You can follow some of the steps below.

The first step is to make a list of all the electrical appliances in your home. This step is important because each device contributes to the total monthly electricity consumption. Here are some examples of appliances that you need to note down.

Take note of the type and number of lights that you use in each room.

Take note of every fan used, whether standing, wall-mounted, or table fans.

Don't forget to take note of each television unit including its size as the power required may vary.

AC is one of the most energy-consuming appliances, so take note of the details.

Refrigerators usually operate throughout the day, thus their power consumption is quite significant.

Record how many times the washing machine is used per week and how long each use takes.

You can check your *microwave*, electric oven, *rice cooker*, *blender, *and so on.

After listing all the electrical appliances, the next step is to check the electrical power of each appliance. This power is usually indicated on the device label or in the manual book. Electrical power is shown as *watts *(W). Here are some ways to check the power.

Many electrical appliances have a label that indicates their electrical power. This label is usually found on the back or bottom of the device.

Checking the manual book can explain the electrical power information if the label on the equipment is unclear or hard to find.

You can search for device specifications online by using the device make and model if you do not have access to labels or manuals.

For example, an LED lamp may have 10 watts of power, a fan may have 75 watts of power, a 32-inch LED television may have about 60 watts of power, and a 1 PK (Paard Kracht) air conditioner may have about 800 watts of power.

The final step is to record how long each appliance is used each day. This is important to calculate the total daily energy consumption of each device. Here is how you can do it.

Determine and record how many hours per day each appliance is used. For example, how many hours the lights in the living room are on, how long the air conditioner is on, and how many hours the television is watched.

For appliances that are not used every day such as washing machine then do record the frequency of use in a week and calculate the daily average. For example, if the washing machine is used 3 times a week for 1 hour each time then the average use is about 0.43 hours per day.

Pay attention to your daily activities that can affect your appliance usage. For example, during weekends you may use more electrical appliances than weekdays.

You can see an example of this when the living room lights are on for 5 hours every day. The fan is used for 8 hours a day. The television is on for 4 hours every day. The air conditioner is turned on for 6 hours a day at night and the refrigerator operates for 24 hours a day.

by following these steps, you can calculate your electricity costs per day

Use the following formula for each piece of equipment to calculate daily consumption:

**Daily Consumption (Wh) = Electricity Power (Watt) x Length of Use (hours) **

Example:

If you use a fan that has a power of 75 watts for 8 hours a day

Daily Consumption (Wh) = 75 Watt x 8 hours = 600 Wh

Add up the daily consumption of all appliances and convert to kWh (1 kWh = 1,000 Wh).

After knowing the total daily consumption in kilowatt hour kWh, then calculate the electricity cost per day with the following formula.

**Electricity Cost Per Day = Total Daily Consumption (kWh) x Electricity Tariff per kWh **

Example:

If the total daily consumption is 10 kWh and the electricity tariff is IDR 1,467 per kWh (Tariff data per class is created)

Electricity Cost Per Day = 10 kWh x Rp1,467 = Rp 14,670

You can calculate the cost of electricity per month by multiplying the daily cost by the number of days in a month.

**Electricity Cost Per Month = Electricity Cost Per Day x 30 **

Example:

If the electricity cost per day is IDR 14,670

Electricity Cost Per Month = IDR 14,670 x 30 = IDR 440,100

The safety of electrical installations is also very important in addition to the efficient use of electricity. By using SNI-standard cables such as NYM (type of cables) from Wilson Cables can ensure that the electrical installations in your home are safe and durable. NYM cables have double insulation that makes them safer and more resistant to high temperatures and humidity also reducing the risk of short circuits and fires.

Wilson Cables provides high-quality cables that fulfil the Indonesian National Standard (SNI), giving you extra confidence that your electrical installation meets strict safety standards. Thus, in addition to saving electricity costs, you also ensure the safety of your home.