How to Select the Right Generator for Your Needs
Whether you’re powering a construction site, data center, medical facility or industrial operation, the right generator keeps your operations running smoothly and reliably in all conditions.
At MacAllister Used Power Systems, we make the generator selection process easy and hassle-free. As a division of MacAllister Power Systems, we pull from over 80 years of power system expertise to help you find the best fit for your needs. We have the knowledge, tools and resources to help you make an informed decision.
Contact us for expert generator selection guidance.
Factors to Consider When Choosing a Generator
MacAllister Used Power Systems can help you look at these factors when picking the best generator for your operating environment:
- Power needs: Evaluate your required kW output requirements during generator sizing to ensure it provides enough power to cover critical loads.
- Application: Know if you’ll use the generator to provide prime, continuous use or standby power.
- Fuel: Depending on the model, a generator can run on diesel, natural gas or other fuel types. You’ll need to understand the advantages and disadvantages of each type, such as cost, accessibility and emissions compliance.
- Location: Do you need a portable generator for a remote jobsite or a stationary unit for a commercial or industrial facility? If it’s the latter, are there any installation challenges to address?
- Compliance: Verify the generator complies with relevant emissions standards and other regulatory guidelines to avoid fines and penalties.
- Technical requirements: Will the generator meet your facility’s or site’s electrical needs regarding technicalities like amperage, voltage and phase?
Using a Generator Specification Tool to Assist With Selection
Generator sizing software like SpecSizer from Caterpillar can simplify the generator selection process even further. This free online generator power calculator uses information like power requirements, load types and operating conditions to help you get the right equipment for your project or application. You can even use it to compare generator sizes.
This easy-to-use online generator selection tool lets you calculate your total power requirements, including both continuous running power and the higher starting power (surge capacity) needed when equipment begins to operate. You can specify the type of fuel the generator will use, like diesel or natural gas, and find a unit with the correct voltage and frequency for your electrical system. You can also determine an acceptable control solution for complex projects.
Contact Us for Generator Selection Assistance
At MacAllister Used Power Systems, we help commercial and industrial operations in the U.S., Canada, Mexico and around the world meet their power generation needs with high-quality used power systems and support services. Contact us to learn more about our generator selection capabilities today.

