IE1→IE3 Efficiency Upgrade Savings
Annual energy and USD savings from replacing an IE1 standard motor with an IE3 premium-efficiency motor.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Motor rated shaft power | kW | |
| Average load factor | ||
| Old / new efficiencies | ||
| Operating hours | h/yr |
Source: IEC 60034-30-1 - IE efficiency classes
In short
Annual energy and USD savings from replacing an IE1 standard motor with an IE3 premium-efficiency motor.