Beckify Electrical Engineering Toolbox

On-site Power

Size UPS, generator, hybrid generator-and-battery, or BESS peak-shave from connected loads. One family — four modes.

About this calculator

Use this free browser-based calculator to work through the relevant electrical inputs, review the result, and compare it with field conditions.

For design, installation, or safety decisions, verify assumptions against the applicable code edition, equipment documentation, and site requirements.

Open the interactive tool