Commercial Backup Generators

The runtime of a commercial backup generator depends on factors such as fuel capacity, load demand, and system configuration. These generators can operate in standby mode during outages or run continuously where a constant power supply is required.

Fuel consumption varies based on generator size and usage, but as a general guide, diesel-powered commercial backup generators may consume around 250 litres per megawatt hour under typical operating conditions. Gas-powered systems can offer improved efficiency, particularly when connected to a continuous gas supply or integrated into energy-efficient systems such as Combined Heat and Power (CHP). Overall running costs will depend on fuel prices, system efficiency, and how the generator is used within your business.

Commercial backup generators are designed for dependable performance with manageable maintenance requirements. The level of servicing needed will depend on operating hours, load conditions, and the environment in which the system is installed.

To ensure reliability and minimise downtime, regular maintenance is recommended. This typically includes scheduled inspections, system testing, servicing of key components, and access to replacement parts when required. Many businesses also benefit from ongoing maintenance contracts, which can include rapid-response support and proactive servicing. With the addition of remote monitoring, potential issues can be identified early, helping to prevent unexpected failures and maintain continuous operation.

Modern commercial backup generators are designed with efficiency and emissions reduction in mind. Many systems incorporate advanced technologies to minimise environmental impact while maintaining reliable performance.

Diesel generators can be fitted with emissions control solutions such as selective catalytic reduction (SCR) and particulate filtration systems to reduce harmful outputs. In addition, many models meet strict emissions standards, including EPA Tier 4 Final and EU Stage V. Gas-powered commercial backup generators provide a cleaner alternative, particularly when using lower-emission or renewable fuel sources. Businesses can further enhance sustainability by selecting energy-efficient configurations and integrating systems such as CHP.

The size of commercial backup generator required will depend on your facility’s total power demand and the critical systems you need to support during an outage. This includes equipment such as lighting, HVAC, IT infrastructure, and any specialised machinery.

A detailed load assessment is typically carried out to determine the appropriate generator capacity and configuration. This ensures the system is correctly sized to handle both current requirements and any future expansion, avoiding underperformance or unnecessary overspending.

We provide a range of market leading generators designed to meet various operational requirements, including fault management, load balancing, and resilience. Our engineers will work with you to help design and specify a power system tailored to your project requirements.

• System level controls: all our industrial backup generators are provided with a variety of integrated power solutions, including system level controls, transfer switches, switchgear, and remote monitoring systems.
• Load balancing, sharing, and shedding: our generators are equipped with an advanced power management system that helps you to handle load balancing, sharing, and shedding efficiently. This helps you optimise performance and prevent overloading. The generator’s load shedding capabilities depend on the control system in place. We can help you configure your controls to meet various load management scenarios.
• Simultaneous controls: It is possible to operate two controls concurrently; however, doing so may introduce complexities to your system. Effective synchronisation and a tailored system design are essential to ensure seamless operation and prevent potential conflicts.
• Hot swap and standby: our systems support both hot swapping and standby configurations, allowing seamless transitions between different power sources without interruption.
• Resilience and fault management: all generator solutions are engineered for dependable performance, with a fault-tolerant design capable of handling unexpected power disruptions. Each unit has options for standby and continuous prime power for full resilience in critical applications.

The planning of your installation will require careful consideration of the generator's footprint and the most suitable location for its installation. Factors such as the required clearance around the generator, as well as the potential impact of noise on staff, neighbouring businesses, and residential areas, must be taken into account during the design stage. In certain instances, development work may be necessary to accommodate the generator, and in some cases, property costs should also be factored into the overall project budget. Please do not hesitate to contact a member of our team for a comprehensive discussion of your options and the associated costs.

For many businesses, the upfront cost of a commercial backup generator can seem like a significant investment. However, the true value of these systems becomes clear when a power outage occurs. While disruptions to mains power may be infrequent, the financial and operational impact of even a short outage can be substantial.

A commercial backup generator helps protect your business from lost revenue, operational downtime, and potential damage to critical systems. By maintaining continuity, safeguarding data, and ensuring a consistent customer experience, these systems can quickly offset their initial cost during a single power event.

Beyond immediate financial protection, backup power also supports business resilience, preserves brand reputation, and minimises disruption to clients and partners. Although outages may be unpredictable, the risk they pose makes investing in a commercial backup generator a strategic and often cost-effective decision for many organisations.