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How to Choose the Right Back-up Generator for Your Business

How to Choose the Right Back-up Generator for Your Business Image

Avoid costly downtime with the right back-up generator for your business. Enhance productivity, protect essential equipment and maintain operational efficiency during unexpected power failures.

Why Your Business Needs a Back-up Generator

Power outages can cause significant disruption, leading to financial loss, downtime, and operational setbacks. Businesses that rely on continuous power, such as data centres, healthcare facilities, and retail stores, need a reliable solution to prevent interruptions. A back-up generator ensures that critical systems such as lighting, security, refrigeration, and IT infrastructure remain operational. This is particularly important in areas prone to extreme weather or unstable grid supply.

Investing in a back-up generator also enhances customer trust by ensuring uninterrupted service. Whether you run a small business or a large facility, having a generator in place allows you to maintain productivity, protect sensitive equipment, and avoid costly downtime during unexpected power failures.

Types of Back-up Generators

Back-up generators are available in different types, each suited to specific business needs. Portable generators are compact and cost-effective, ideal for temporary or low-power applications. Standby generators are permanently installed and automatically activate during a power failure, making them suitable for businesses requiring seamless transitions.

Inverter generators are efficient and produce clean power, which is essential for businesses using sensitive electronics. Industrial generators are designed for large-scale operations, offering higher capacity and durability. Choosing the right type depends on your power needs, budget, and operational scale. Understanding these options helps businesses select the most effective solution for maintaining operations during outages.

How to Choose the Right Back-up Generator for Your Business

For businesses that experience frequent power cuts, investing in a standby generator provides long-term reliability, ensuring essential operations continue without manual intervention. 

However, businesses with occasional power needs, such as construction sites or outdoor events, may benefit more from portable generators, which offer flexibility and mobility.

Inverter generators, though smaller, provide consistent voltage and reduced noise levels, making them ideal for businesses with delicate equipment such as hospitals, laboratories, and IT firms.

Meanwhile, industrial generators are the most robust choice, designed to handle high power loads for extended periods. These can be custom-fitted with additional features such as weatherproofing and noise reduction to suit specific industries. 

Selecting the right generator type depends not only on power requirements but also on the operational environment, ease of maintenance, and long-term cost efficiency.

Assessing Your Power Requirements

Determining your power requirements is crucial when selecting a generator. Start by identifying the essential systems that must remain operational during an outage, such as computers, security systems, refrigeration units, and production equipment. 

Calculate the total wattage required by checking the power ratings of each device. Consider both running wattage (continuous power needed) and starting wattage (power required at start-up).

For businesses with complex needs, consulting an electrician or generator specialist can help determine the right capacity. Choosing a generator with sufficient power prevents overloading and ensures efficiency. Oversizing may lead to unnecessary costs, while undersizing can cause performance issues, so accurate assessment is key.

Fuel Options: Diesel, Petrol, Gas, or Solar?

Selecting the right fuel type for your generator impacts performance, running costs, and environmental impact. Diesel generators are fuel-efficient, durable, and suitable for long-term use, making them popular for businesses with high energy demands. Petrol generators are typically more affordable but less fuel-efficient and better suited for short-term or occasional use.

Gas generators use natural gas or LPG, providing a cleaner alternative with lower emissions and reduced maintenance costs. Solar-powered generators are an eco-friendly option, harnessing renewable energy, though they may not provide the same reliability as fuel-based models for high-demand applications. The choice depends on availability, operating costs, and sustainability goals.

Fuel Options - the Right Back-up Generator for Your Business

Diesel generators, while more expensive upfront, are preferred for large-scale businesses due to their fuel efficiency and longevity, often lasting thousands of hours with proper maintenance. 

Petrol generators, though less durable, offer a cheaper initial investment and are widely available, making them a convenient choice for smaller businesses. Gas generators are gaining popularity due to their lower carbon footprint, but require a reliable gas supply to remain effective.

Solar generators are the most sustainable option, using battery storage to convert sunlight into electricity, but they require a significant initial investment and depend on sufficient sunlight exposure. 

When deciding on a fuel type, businesses should consider fuel storage capacity, refuelling convenience, maintenance costs, and the environmental impact of their operations. Choosing the right fuel source ensures reliable energy supply while aligning with budget and sustainability objectives.

Automatic vs Manual Start

Generators come with either automatic or manual start mechanisms, each offering distinct advantages. Automatic transfer switch (ATS) generators detect power loss and switch on immediately, ensuring seamless transitions without human intervention. These are ideal for businesses that rely on uninterrupted operations, such as healthcare facilities and data centres.

Manual start generators require an operator to turn them on when needed, making them a more cost-effective choice for businesses where immediate power restoration is not critical. While manual models reduce initial costs, automatic generators offer convenience and protection against unexpected outages, helping businesses maintain continuity effortlessly.


Looking for reliable domestic electrician services in Surrey? Redwood Electrical Services is a team comprised of experienced and qualified electricians in the Woking, Guildford, and Cobham areas. Our team delivers friendly and professional electrical services, whether you're dealing with small issues like changing lights or larger projects like full house rewiring.