Working as a construction contractor will at some point require you to rent a generator. Generators provide electricity for appliances and lighting in places that do not have access to the electricity grid. They also provide backup power in case of emergency, thus minimizing the risk of costly outages.

The best generators for construction projects come in a variety of sizes, configurations, and power output capacities. It’s important to choose a model that offers enough power and reliability to keep your work going without interruption.

Factors Influencing When Choosing a Generator for Construction

As a rule of thumb, you need a generator that provides enough power to keep jobsite operations running at 70-90% capacity. A generator operating at less than 50% of its capacity significantly reduces the unit’s operating efficiency.

Considering the following factors helps you determine the right size and output capacity for your generator rental:

Country size: The bigger the construction site, the more power the generator will need to produce. Larger sites may even require more than one generator to meet power demands.

Types of equipment : If the construction site requires the use of heavy equipment and tools, you will need a generator with more power than when using smaller products that consume less electricity.

Power reserve: Some pieces of equipment require more electricity to turn on than to operate. Make sure you choose a generator that can handle the power surges required when running multiple machines or tools at the same time.

Voltage Capacity: Along with the power of the generator, you also need to consider the voltage. The higher the voltage output, the stronger the electric current that the generator will deliver.

Phase: Generators come in single-phase and three-phase options. For a construction project, you will probably need the latest version, as it will provide a more stable and reliable power supply.

An easy way to calculate the best jobsite generator size for you is to add up the wattage of all appliances and tools that require electricity. You can then compare this total with the power of the generators that are available for rent. Be sure to choose a model that offers extra capacity to account for energy increases and the possible addition of more equipment during the project.

Calculate Power Before Choosing a Construction Site Generator

Calculate the Power you need before choosing a construction site generator.

Start by making a list of all the equipment and machinery (air compressors, saws, hammers, portable office equipment, computers, etc.) that require electricity on the construction site. You can then check the starting and operating power for each, which is marked on the device.

Calculate the total power demand by adding all the kW or KVA quantities. The power capacity of the generator you choose should exceed this figure by 10-20%.


Diesel or Natural Gas Generator?

Another factor to consider when choosing a generator for your workplace is the fuel source. Diesel and natural gas models offer several advantages.

Advantages of Diesel Generators:

Efficiency: In Albania, oil is more expensive than natural gas, but it is more energy efficient. You will get more from a unit of oil than from the same volume of gas.

Consistent Power: Oil is a reliable source of energy, making it an excellent choice for workplaces that require a constant, long-term supply of electricity.

Robust construction: Diesel engines have a robust design that can withstand the rigors of heavy use and ensure longer life.

Security: Diesel is less flammable than many other types of fuel. The absence of spark plugs in diesel engines reduces the likelihood of self-ignition.

Advantages of Natural Gas Generators:

Clean combustion: These days, construction operations must meet increasingly stringent emissions requirements. Natural gas burns cleaner than other types of fuel, enabling you to stay compliant and protect the environment.

Lower upfront fuel costs : Natural gas is one of the cheapest fuel sources.

Efficiency: Like oil, natural gas is a very efficient fuel, resulting in low energy costs.

Choose the Right Generator for Building

AON has the right experts to help you to choose the best generator that meets your power requirements on a construction site. The AON team works closely with you to calculate your electricity needs based on all the above factors. You will receive the right-sized equipment and be instructed on how to set it up on your construction site.

AON will help you explore all the benefits of renting generators and other equipment, such as greater flexibility, lower operating costs, immediate availability and better results due to the use of specific models for work.

Visit for more information and advice on choosing a model – we are available around the clock to help you.