How to choose an electric generator for your home: complete guide and comparison 2026

Electric generators have become an increasingly popular solution for homes.

They can be used as backup power during blackouts, in isolated homes without connection to the power grid, or as support for solar systems.

However, choosing the the right home generator isn’t always easy. Many people buy a generator with too little power that can’t power their home, or one that’s too big and uses more fuel than necessary.

A home generator allows you to:

• power essential appliances
• maintain power supply during blackouts
• charge solar batteries
• ensuring energy supply in isolated homes

In this guide, we explain which generator to buy for a home, how much power to choose, and which type of generator is best suited for each situation.

What kind of electric generator does a house need?

The power of the home generator depends mainly on the number of appliances you want to power and the size of the home.

As a general reference:

A 5000W-7000W generator is usually sufficient for most homes, allowing essential appliances to be powered.

These may include:

• refrigerator
• lighting
• television
• microwave
• small appliances

If you want to power higher-consumption equipment such as air conditioning or water pumps, it is advisable to use more powerful generators.

What devices can a home generator power?

To correctly calculate the power required, it is advisable to know the approximate consumption of the appliances.

For example, a 3000W–4000W generator can power:

• refrigerator
• lighting
• television
• small appliances

If you also want to use a water pump or air conditioning, it is recommended to increase the power to 5000-7000 W.

Types of electric generators for the home

There are different types of generators depending on the fuel and technology.

Gasoline generators

They are the most common for domestic use.

Key benefits:

• lower initial cost
• simple maintenance
• ideal for occasional use

They are a good option for backup during power outages or occasional use.

Diesel generators

Diesel electric generators are designed for more intensive use.

Advantages:

• greater efficiency in prolonged use
• more durable engines
• better performance with high loads

They are frequently used in isolated homes or professional facilities.

Silent inverter generators

Inverter generators produce more stable power and less noise.

Advantages:

• stable, safe current for electronics
• lower consumption thanks to ECO mode
• quieter operation

They are the best option if you are looking for a quiet home generator or if you need to power sensitive electronic equipment.

Electric generators for homes with solar panels

More and more homes are using photovoltaic installations.

In these cases, the generator is used as a backup when solar production is insufficient.

A generator enables:

• charge solar batteries
• maintain the power supply on cloudy days
• ensure energy independence

So-called photovoltaic backup generators are specifically designed to work alongside solar systems.

Comparison of Genergy generators recommended for single-family homes

Below are some examples of generators suitable for different types of housing.

These models cover most household needs.

Quick comparison 

Best home generator by home type:

Best generator for a small home
→ Limited 3000 Diesel

Best generator for an average-sized home
→ Limited 7000

Best home solar power system
→ Mulhacén SOL 7000W

Best advanced home generator
→ Creta SOL Silent 7500W

Best generator for a whole house based on noise level:

Quieter → Creta SOL Silent
Better power/noise balance → Mulhacén SOL

Which generator to choose depending on the type of home

Small house

Recommended generator for a single-family home:

Limited 3000 Diesel

Allow:

• power basic appliances
• use during power outages
• low consumption

Average housing

Recommended generator:

Limited 7000

Allow:

• power several appliances
• full domestic use
• sufficient power for most homes

House with solar panels

Recommended generator:

Mulhacén SOL 7000W

Allow:

• photovoltaic system backup
• charging solar batteries
• maintain energy supply

High-consumption housing

Recommended generator:

Creta SOL Silent 7500W

Ideal for:

• large homes
• complete solar systems
• advanced energy backup

Actual consumption of a domestic generator

Consumption depends mainly on the power and load of the generator.

Automatic ECO mode reduces consumption when energy demand is low.

Noise level of a domestic generator

The noise level depends on the type of generator.

Genergy inverter generators:

59 dB → very quiet
65 dB → quiet
74 dB → standard level

Inverter generators are much quieter than conventional generators.

Inverter generator vs. conventional generator

Advantages of inverter generators:

• stable current
• insurance for electronics
• lower consumption
• less noise
• greater energy efficiency

For these reasons, inverter generators are the most recommended for domestic use.

Generator as backup power source

One of the most common uses is as a backup in case of a power outage.

Allow:

• keep the electricity on at home
• power essential appliances
• ensure energy independence

It is also very useful for isolated homes or autonomous solar systems.

Conclusion

A domestic electric generator is an effective solution for ensuring energy supply in homes.

It allows you to cope with power outages, power essential appliances, or support solar systems.

Choosing the right power and type of generator is essential for obtaining the best performance.

Genergy generators offer solutions tailored to different needs, from small homes to complete solar installations.