Cómo elegir un generador eléctrico para casa: guía completa y comparativa 2026

Electric generators have become an increasingly popular solution for homes.

They can be used as a backup during power outages, in remote homes without access to the power grid, or to supplement solar power systems.

However, choosing 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 during blackouts
• charge solar batteries
• ensure energy supply to remote 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 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.

Are you wondering what kind of generator you need for your home?

As a general guide for a home generator:

A 5,000- to 7,000-watt generator is usually sufficient for most homes, providing power for essential appliances.

These may include:

• refrigerator
• lighting
• television
• microwave
• small appliances

If you want to power high-consumption appliances such as air conditioners or water pumps, it is advisable to use higher-capacity generators.

What appliances can a home generator power?

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

For example, a 3,000–4,000-watt generator can power:

• refrigerator
• lighting
• television
• small appliances

If you also want to use a water pump or air conditioner, we recommend increasing the power to 5,000–7,000 W.

Types of home generators

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

Gasoline generators

These are the most common ones for home use.

Key benefits:

• lower upfront cost
• easy maintenance
• ideal for occasional use

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

Diesel generators

Diesel generators are designed for more intensive use.

Advantages:

• greater efficiency during prolonged use
• more durable engines
• better performance under heavy loads

They are frequently used in single-family homes or commercial facilities.

Silent inverter generators

Inverter generators produce more stable power and operate more quietly.

Advantages:

• stable, safe power supply for electronics
• lower fuel consumption thanks to ECO mode
• quieter operation

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

Home power generator with solar panels

More and more homes are installing solar panels.

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

A generator allows you to:

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

So-called photovoltaic backup generators are specifically designed to work in conjunction with solar systems.

Comparison of Genergy generators recommended for single-family homes

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

These models meet most household needs.

Home Generators: Quick Comparison  

Best home generator by home type:

Best generator for a small home
→ Limited 3000 Diesel

Best generator for an average 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
best balance of power and noise → Mulhacén SOL

Which generator to choose based on the type of home

Small house

Recommended generator for a single-family home:

Limited 3000 Diesel

Allows:

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

Average home

Recommended generator:

Limited 7000

Allows:

• power various appliances
• full home use
• enough power for most homes

House with solar panels

Recommended generator:

Mulhacén SOL 7000W

Allows:

• photovoltaic system support
• charging solar batteries
• maintain the energy supply

High-energy-consumption home

Recommended generator:

Creta SOL Silent 7500W

Ideal for:

• large homes
• complete solar systems
• advanced power backup

Actual power consumption of a home generator

Power consumption depends mainly on the generator's power output and load.

Automatic ECO mode reduces power consumption when energy demand is low.

Noise level of a home 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:

• steady current
• electronics insurance
• lower consumption
• less noise
• greater energy efficiency

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

Generator as a backup power source

One of its most common uses is as a backup power source in the event of a power outage.

Allows:

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

It is also very useful for remote homes or off-grid solar systems.

Conclusion

A home generator is an effective solution for ensuring a steady power supply in homes.

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

Choosing the right power rating and type of generator is essential for optimal performance.

Genergy generators offer solutions tailored to a variety of needs, from small homes to full-scale solar installations.