All You Need to Know: the Costs of Automatic Generators

by Anna

In an increasingly connected world, reliable access to electricity is essential. Power outages can disrupt daily life, leading to inconvenience, discomfort, and even financial losses. This is where automatic generators come into play. These devices are designed to seamlessly provide backup power during electrical grid failures, ensuring that your home or business remains operational. However, understanding the costs associated with automatic generators is crucial for making informed decisions. In this comprehensive guide, we will explore the factors influencing the cost of automatic generators, from the unit itself to installation and maintenance.


Factors Influencing the Cost of Automatic Generators

The cost of an automatic generator can vary significantly based on several factors. To accurately estimate the total expense, consider the following key influencers:


1.Generator Size and Capacity: The generator’s size and power capacity play a primary role in determining its cost. Larger generators with higher wattage outputs will generally cost more than smaller units. The size of the generator should be chosen based on your specific power needs during an outage.

2. Fuel Type: Automatic generators can run on various fuel types, including natural gas, propane, diesel, and gasoline. The fuel type you choose can affect both the initial purchase price and long-term operating costs. Natural gas generators, for example, are typically more expensive upfront but may be more cost-effective over time due to the lower price and accessibility of natural gas.

3. Brand and Model: The brand and model of the generator can significantly impact its cost. Well-established brands with a reputation for reliability and durability often command higher prices. Research different brands and models to find one that meets your needs and budget.

4. Installation Requirements: The installation process for an automatic generator involves electrical work, plumbing (for certain fuel types), and potentially construction to create a suitable foundation or enclosure. The complexity of the installation can influence the overall cost. Professional installation is crucial to ensure safe and efficient operation.

5. Transfer Switch: Automatic generators require a transfer switch to disconnect your home or business from the grid during an outage and connect it to the generator. The size and type of transfer switch needed can vary, affecting the overall cost.

6. Accessories and Features: Additional features and accessories, such as remote monitoring, weather-resistant enclosures, soundproofing, and automatic load shedding, can add to the cost of the generator. Consider which features are essential for your specific needs.

7. Location: Your geographical location can influence the cost of an automatic generator. Factors such as local labor rates, permitting requirements, and the availability of fuel sources can vary from one area to another.

8. Maintenance: Over time, generators require routine maintenance to ensure their reliability. Maintenance costs may include oil and filter changes, battery replacements, and periodic inspections by a qualified technician.

9. Warranty: The length and terms of the manufacturer’s warranty can affect the cost of the generator. Generators with longer warranties may have higher upfront prices but offer greater peace of mind.

Understanding Generator Sizes and Capacities

Determining the appropriate size and capacity of your automatic generator is crucial to meeting your power needs during an outage while avoiding overspending. Generators are typically categorized by their power output, measured in kilowatts (kW). Here are some common generator sizes and their typical applications:

Small Generators (6-20 kW): These generators are suitable for powering essential circuits in a home, such as the refrigerator, heating or cooling systems, and a few lights and outlets. They are often used for residential backup power.

Medium Generators (20-45 kW): Medium-sized generators can support more extensive power needs, including essential household circuits and additional appliances or devices. They are commonly used in larger homes and small businesses.

Large Generators (45-150+ kW): Large generators are designed to provide backup power for an entire house or a substantial portion of a commercial building. They can handle multiple appliances, HVAC systems, and lighting circuits simultaneously.

Cost Breakdown: Initial Purchase, Installation, and Maintenance

To provide a comprehensive understanding of the costs associated with automatic generators, let’s break down the expenses into three main categories: initial purchase, installation, and maintenance.

1. Initial Purchase Costs

The initial purchase cost includes the price of the generator itself and any necessary accessories or features. Here are estimated price ranges based on generator size:

Small Generators (6-20 kW): $2,000 – $5,000

Medium Generators (20-45 kW): $5,000 – $12,000
Large Generators (45-150+ kW): $12,000 – $50,000+

Keep in mind that these are rough estimates, and prices can vary widely depending on the factors mentioned earlier, such as brand, fuel type, and additional features.

2. Installation Costs

Professional installation is essential to ensure the safe and efficient operation of your automatic generator. Installation costs can vary based on factors like location and complexity, but here’s a general breakdown:

Small Generators: $1,000 – $3,000

Medium Generators: $2,000 – $6,000

Large Generators: $4,000 – $10,000+

These costs cover electrical work, fuel line installation (if applicable), transfer switch installation, and any necessary construction or foundation work. Permitting fees and local labor rates can also influence installation costs.

3. Maintenance Costs

Proper maintenance is critical to the longevity and reliability of your automatic generator. Maintenance costs can vary depending on the generator’s brand, model, and size, but here are some average annual maintenance costs:

Small Generators: $100 – $300 per year

Medium Generators: $200 – $500 per year

Large Generators: $300 – $800+ per year

Maintenance tasks typically include oil and filter changes, battery replacements, inspections, and any necessary repairs. It’s essential to follow the manufacturer’s maintenance guidelines to keep your generator in optimal condition.


1. Can I install an automatic generator myself to save on installation costs?

While some experienced individuals may have the skills to install a generator, it’s highly recommended to hire a licensed and qualified electrician or generator installer. Proper installation ensures safety and compliance with local codes and regulations.

2. Do automatic generators require regular fuel deliveries?

The need for fuel deliveries depends on the type of fuel your generator uses. Natural gas and propane generators typically connect to a continuous fuel supply, eliminating the need for regular deliveries. Diesel and gasoline generators require periodic refueling, which should be factored into maintenance costs.

3. How long does the installation of an automatic generator typically take?

The installation timeline can vary based on factors such as generator size, site preparation, and local permitting requirements. Small generators may take a few days, while larger installations can take a week or more.

4. Do automatic generators require a dedicated fuel source, like a propane tank or natural gas line?

Yes, automatic generators that run on propane or natural gas require a dedicated fuel source. This involves either installing a propane tank or connecting to a natural gas line. The type of fuel source will depend on your location and preferences.

5. Are there financing options available for purchasing and installing automatic generators?

Yes, many manufacturers and dealers offer financing options to help spread out the cost of purchasing and installing an automatic generator. Additionally, some government incentives or grants may be available to help offset the cost of backup power solutions in certain regions.


Automatic generators provide a reliable solution for maintaining power during outages, ensuring that homes and businesses can continue to function smoothly. The cost of automatic generators varies based on factors such as size, fuel type, brand, and installation requirements. Understanding these cost factors and budgeting for the initial purchase, installation, and ongoing maintenance is essential for making an informed decision about investing in backup power. While the upfront expenses may seem significant, the peace of mind and convenience provided by an automatic generator can prove invaluable in the event of a power outage.


You may also like

Copyright © 2023