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Motor energy cost calculator: annual kWh, cost and savings
Annual kWh and running cost of an electric motor, and the savings of a higher IE efficiency class (IEC 60034-30-1) at your kWh price. Free, no sign-up.
- Instant result
- Formula and standards shown
- On desktop and phone
Result
97,826kWhEnergy per year
- Annual cost
- 14,674€
- Energy saved
- 3,089kWh
- Annual saving
- 463 €
Free during the beta, no credit card
Motor energy figures kept with the replacement decision
Here, the calculator is free and the result is gone when you close the page. In Reglova, it is attached to the work order on the right machine: you find it again at the next breakdown, and on audit day.
The CMMS software comparison, our gaps included- Attached to the work order with its inputs: the server recalculates it, it stays verifiable.
- On the technician's phone, even without a network.
- In the machine's history, for the next breakdown.
- The asset's nameplate data pre-fills the calculation.
When to compare motor energy costs
01
Choose between rewinding a burnt-out motor and replacing it with a more efficient one.
02
Rank the site's motors by energy cost to choose which to replace first.
03
Justify an investment with its payback time.
Good to know
Enter the power actually delivered to the machine, not the nameplate rating: an oversized motor runs below its rated power, and its efficiency drops at low load.
Motor energy formula and IE efficiency classes
A motor running all year costs far more in electricity than to buy. The calculator gives the annual energy use, E = P/η·h, its cost at the kWh price you enter, and the savings from a higher-efficiency motor (IE classes of IEC 60034-30-1).
Formula · Reference documents
E = P/η·h ; cost = E·price ; savings = P·h·(1/η − 1/η′)
IEC 60034-30-1 (IE efficiency classes)
Inputs and accepted ranges
| Input | Unit | Accepted range | Example |
|---|---|---|---|
| Output power | kW | 0.001 to 100,000 | 15 kW |
| Current efficiency η | 0.01 to 1 | 0.92 | |
| Running hours per year | h | 0 to 8,784 | 6,000 h |
| Price per kWh | €/kWh | 0 to 10 | 0.15 €/kWh |
| Efficiency of a better motor | 0.01 to 1 | 0.95 |
Calculated results
- Energy per yearkWh
- Annual cost€
- Energy savedkWh
- Annual saving€
Rewind or replace decisions kept in the motor history
- Breakdowns reported by QR code
- Work orders on the phone, even without a network
- Mandatory inspections reminded by email
- Audit file as a PDF, in one click
Free during the beta, no credit card