Put a number on the energy your plant is wasting.
Free calculators for maintenance engineers and energy managers. Each one shows its formula, its assumptions and a worked example, so you can defend the result in a budget meeting.
One air leak at 7 bar, running 8,000 h a year at 0.12 per kWh, costs
–per year
- Air lost
- –
- Compressor power wasted
- –
Calculators
- Compressed air leak costAir, kW and money lost through leaks, from hole size and pressure.
- Power factor correction and capacitor bank sizingkvar needed, standard bank size, current and kVA reduction.
- VFD energy savings for fans and pumpsThrottling against variable speed, including static head.
- Motor upgrade payback (IE2 to IE3 or IE4)Replace a working motor, or buy new instead of rewinding.
- Compressor pressure reduction savingsWhat each bar off the setpoint saves, leaks included.
- Transformer losses and annual costIron and copper losses, efficiency, and low-loss replacement payback.
- Load factor and peak demand costLoad factor, effective cost per kWh, and the value of shaving peaks.
- LED lighting retrofit paybackSavings and payback from replacing high-bay and fluorescent lighting.
- Energy cost per unit of productionSpecific energy consumption and cost per tonne, piece or m³.
- EnPI and energy baseline regression (ISO 50001)Regression baseline, R², CV(RMSE) and normalised savings.
About
PlantEnergyKit is built and checked by a practicing industrial electrical engineer who works on substations, plant electrical rooms and energy management systems. Every calculator uses published engineering methods, and every formula is written out on the page.
Results are estimates for screening and prioritising projects. Confirm important decisions with measurements on your own equipment. More about how the calculators are checked.