SpecSizer by Cat® Electric Power
A generator set sizing software aimed to help you find the right generator
set for your project needs.
FAQS
What is SpecSizer and how does it work?
SpecSizer is a free web-based generator sizing tool developed by Caterpillar. It helps you select the optimal generator set based on your specific power requirements load types and operating conditions.
Is SpecSizer free to use?
Yes SpecSizer is completely free. You can create a new account or sign in using your existing Cat login which also works across Cat.com, parts.cat.com and power.cat.com.
What information do I need to size a generator with SpecSizer?
To size a generator accurately you’ll need a clear understanding of the electrical loads it will support and the environmental conditions in which it will operate such as temperature , altitude and usage patterns.
Does SpecSizer account for load types like HVAC lighting and pumps?
Yes SpecSizer includes built-in options for common load types such as HVAC systems, lighting motors and pumps allowing for precise and realistic generator sizing.
Can I use SpecSizer outside of North America?
Absolutely. SpecSizer is available globally and supports seven languages English French German Italian Portuguese Spanish and Chinese.
Does SpecSizer recommend specific generator models?
Yes SpecSizer will recommend a specific Caterpillar generator set based on your inputs. You can also explore alternative models to find the best fit for your project.
Can I compare multiple generator sizes in SpecSizer?
Yes after receiving a recommendation you can compare different generator models and configurations to evaluate performance features and suitability for your needs.
Is there a way to learn more before creating an account?
READY TO GET STARTED?
Diesel, Gas and Mobile Generator Sets
Size products from 20 kW - 4000 kW
Guide Specs, 2D & 3D Drawings
Share your Sizing Project
Manage tens to hundreds of loads
To Access SpecSizer you will need a Caterpillar User ID and password.