Energy & Sustainability calculator
Motor Efficiency Savings Calculator
Motor efficiency savings apply to premium-efficiency motors, VFDs, pump/fan trimming, compressed-air controls, and right-sizing projects. This calculator converts expected kWh reduction into a financial savings estimate.
What this calculator does
- Estimate motor efficiency savings from annual kWh avoided, electricity value, savings capture, and project cost.
- an energy or maintenance manager needs to value a motor or drive efficiency measure
- Returns the motor efficiency savings for the selected facility, line, product, project, or reporting boundary.
Formula used
- Captured motor energy savings = annual electricity avoided × electricity value × savings persistence rate
- Net motor efficiency savings = captured motor energy savings + project implementation cost
Inputs explained
- Annual electricity avoided: Use calculated or measured kWh savings from motor, drive, pump, fan, or compressor changes.
- Electricity value: Use blended electric rate or marginal value including demand if appropriate.
- Savings persistence rate: Account for runtime, load variation, control settings, and degradation.
- Project implementation cost: Include motor, VFD, installation, alignment, programming, or verification cost.
How to use the result
- Use it for energy management, sustainability reporting, utility-cost review, project screening, compliance planning, or operational performance tracking.
- It does not replace certified emissions inventories, utility tariff analysis, engineering M&V studies, or regulatory reporting review.
Common questions
- What does the motor efficiency savings calculator tell me? It converts the stated energy, carbon, utility, water, waste, or project assumptions into the motor efficiency savings result shown on the page.
- Which data should I enter? Use values from utility bills, submeters, emissions-factor tables, production records, supplier data, project estimates, or approved reporting workbooks for the same boundary and period.
- How should I use the result? Use it to compare projects, support reporting, prioritize audits, update product costing, estimate savings, or prepare a business case before committing resources.
- When is this only an estimate? Treat it as an estimate until final tariffs, emissions factors, production allocation, metering accuracy, weather or production normalization, and project performance are confirmed.
Last reviewed 2026-05-12.