Calculating Electrical Capacity: How It's Done and What You Need
Have you ever wondered how much electrical capacity your home or business needs? With i-DE's online capacity calculator, you can get an accurate estimate of the capacity you need.
How is Electrical Capacity Calculated?
To calculate the electrical capacity needed in your home or business, we have developed an easy-to-use tool that provides an estimate based on the characteristics of the installation.
By entering the details of your home or premises, you will get a recommended capacity range in kilowatts (kW). This will allow you to make more informed decisions about the recommended capacity to contract, ensuring more efficient consumption and avoiding overcosts.

Calculate your electrical power online
Frequently Asked Questions about Contracted Electrical Capacity Calculation
What is Contracted Capacity?
Contracted capacity is the maximum amount of energy you can use simultaneously in your home or business. It is measured in kilowatts (kW) and defines the electrical capacity that your installation can always support without causing interruptions in the supply.
How Much Capacity to Contract?
The capacity you should contract depends on several factors, such as the intended use or the characteristics of the electrical installation. To register the electricity supply in your home or business and get more information about the appropriate capacity, you can find more information here.
What Capacity Do Appliances Need?
Each appliance requires a certain amount of capacity. However, the values below are generic estimates used in many energy efficiency resources and may vary slightly depending on the brand, model, and efficiency of each appliance.
It is advisable to know which appliance demand the most electricity.
Appliance | Approximate Capacity |
---|---|
Microwave |
1.200 W |
Refrigerator | 200 W |
Washing Maschinne | 2.200 W |
Oven | 2.000 W |
Televisión | 150 W |
How to Change My Contracted Capacity?
If after using the electrical capacity calculator, you consider it necessary to adjust the contracted capacity of your home or business, learn how to change your contracted capacity.
What is the Formula for Electrical Capacity?
The recommended electrical capacity can be calculated by summing the kilowatts (kW) of capacity that each appliance has. The total kW must be multiplied by a simultaneity factor of 0.25 and 1 kW must be added to the result to calculate the minimum contracted capacity.