toololis
⚙️

Motor Efficiency Class IE1-IE4 ROI

Premium efficiency motor lifecycle savings

📚
Learn more

Motor Efficiency IE1-IE4 ROI Calculator

Lifecycle cost comparison of IEC 60034-30 motor efficiency classes. Calculate when IE3/IE4 premium pays back via energy savings. EU industrial standard.

How to use this tool

  1. 1

    Motor specs

    kW + IE class + operating hours.

  2. 2

    Energy cost

    Industrial €/kWh.

  3. 3

    Lifecycle ROI

    IE3/IE4 premium vs lifetime savings.

Frequently Asked Questions

IE classes meaning?
IEC 60034-30: IE1 (standard), IE2 (high), IE3 (premium), IE4 (super-premium). EU mandates IE3 minimum since 2017 for >0.75kW. IE4 advisable for high-runtime applications.
Real efficiency difference?
IE2 → IE3: ~2-4% gain. IE3 → IE4: ~1-2% gain. Sounds small but on a 75kW motor running 8000h/yr at €0.20/kWh = ~€2,400/yr per 2% gain.
When does IE4 NOT pay back?
Low runtime (<2000h/yr), low energy cost, or motor near end-of-life. Generally: IE4 only worthwhile if motor runs >3000h/yr at industrial €/kWh ≥ 0.10.

You might also like

Age Calculator

Calculate exact age in years, months, days, hours

Open

BMI Calculator

Body Mass Index — metric and imperial

Open

Tip Calculator

Calculate tips and split bills between people

Open
🔒
100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.