What Should the Power Output of a Home-use Generator Be?

The generator power suited for home use can change according to your home’s requirements and consumption habits. Generally speaking, the power of a home generator is determined by the types, quantity and power consumption of the electrical equipment in the house. 

The first thing is to determine which appliances in your home will be supported by the generator. For example, make a list of the power consumption of appliances such as your fridge, oven, television, computers, lighting and heating/cooling systems.

Next calculate the total power consumption of all these appliances to determine the minimum generator requirements. Keep in mind that some devices consume more electricity at startup. This means that your generator should be able to handle these sudden increases in output. 

Typically, the output power of a home generator changes between 5 and 20 kilowatts. However, this output power may change according to the features and requirements of your home. You may need a bigger generator especially for large houses or if you have many electrical appliances. 

How Many kW are Required on Average for Home Needs?

The daily average kW consumption for home requirements changes according to the size of the house, environmental conditions, variety of appliances and consumption habits. Nevertheless as a general guide, a typical house may use on average between 10 and 30 kWh (kilowatt hours) a day.

Having said that, some houses may consume less or more electricity. For example, a large house may have more lighting, heating/cooling, larger home appliances and other electrical devices. This will increase daily consumption. In contrast, a small apartment or a one-bedroom house will tend to consume less electricity. 

It’s always a good idea to look at your electricity bills to correctly determine the daily power consumption of your house. From there you can make further assessments by considering your consumption habits. This data will help you in picking a generator and making a plan suited to your requirements.  

How to Calculate kW for Home Requirements?

You can follow these steps to calculate kW requirements for your home:

  1. List of Electrical Equipment: Make a complete list of all the electrical devices you want to use around the house. These would for example be the fridge, oven, washing machine, dishwasher, television, computer, lighting, heating/cooling systems.
  2. Power Consumption Information: Find out the power consumption data in watts for each device. You can usually find this information on the device labels or instruction booklets. If none of these are available, you can always search online with the model number. 
  3. Converting Power Consumption to kW: For converting power consumption in watts to kilowatts (kW), simply divide the watt power consumption by 1,000. One kW is equal to 1,000 watts.
  4. Calculating Total Power Consumption: After calculating the kW consumption of each device, simply add all of these together to determine the daily power consumption of your house.

For instance if the power consumption of a fridge is given as 200 watts, we divide 200 by 1,000 to convert this into kW and arrive at 0.2 kW. Similarly, you determine the power consumption of other devices in terms of kW and add them together.

For example:

  • Fridge: 0.2 kW
  • Television: 0.1 kW
  • Washing Machine: 0.3 kW
  • Total: 0.6 kW (this is a simplified calculation)

Thus, you can calculate the daily average kW consumption of your home. Again, keep in mind that some devices require more power at startup.So it’s important to allow for this in selecting the right generator.


What Type of Generator is Best Suited for Home Use?

When choosing a generator for home use, you should take note of certain factors according to the requirements of your house and your personal preferences:

  • Power Capacity: Calculate the total power consumption of the appliances you want to use around the house and select a generator accordingly. If your house is larger or you have more electrical devices, you may need a generator with a larger power capacity.
  • Portability: If you prefer a portable generator for your home, pay attention to dimensions, weight and portability features. A lightweight and compact generator may be more practical in terms of storage and portability.
  • Fuel Type: Generators generally run on different fuels such as regular, diesel or propane. Take the fuels type and availability into account to select the best type for your home.
  • Quiet Operation: You should prefer a quieter generator model for home use. This is important in terms of not disturbing neighbors or if you plan to run the generator at night.
  • Automatic Startup: Some generator models have an automatic startup feature. So the generator automatically kicks in when there is a grid power outage. This feature can be useful to provide your house with uninterrupted power.
  • Brand and Quality: It is important to choose a dependable brand and a quality generator. Pay attention to good warranty coverage and after-sales support for spare parts and maintenance.

Portable generators are commonly preferred for home use. Portable generators with output power between 3 and 10 kW are generally suited for home use. However, this can change according to the features and requirements of your house. It always makes sense to get advice from an expert or a generator seller in selecting the ideal generator for you.