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SISL - Smart Industrial Solution Ltd.

Free Online Tool

VFD Energy Savings Calculator

Calculate how much your factory can save with a Mitsubishi Electric VFD. Based on the Affinity Laws — Power ∝ Speed³.

Up to 66% Savings

Reduce electricity bills dramatically with speed control

6-18 Month ROI

Fast payback on your VFD investment

Motor Protection

Soft start reduces mechanical stress & extends motor life

Instant Results

No signup needed - calculate savings in seconds

Motor Details

= 29.5 HP

20-40% typical

Affinity Laws: Power ∝ Speed³

20% speed cut = 49% energy saved. 30% cut = 66% saved.

Annual Savings

624,408

BDT/year (66% reduction)

Energy Saved

52,034

kWh per year

CO2 Reduction

30,700

kg CO2 (1395 trees equivalent)

Payback Period

N/A

Enter VFD cost above

Annual Cost Comparison

Without VFD950,400 BDT
With VFD325,992 BDT

1-Year

624,408 BDT

5-Year

3,122,040 BDT

10-Year

6,244,080 BDT

Monthly Savings Projection

JanFebMarAprMayJunJulAugSepOctNovDec0200000400000600000800000
  • Cumulative Savings

Monthly Cost Comparison

JanFebMarAprMayJunJulAugSepOctNovDec020000400006000080000
  • Without VFD
  • With VFD

Recommended

FR-A800

FR-A840-22K

Browse VFD Shop

Need help choosing?

Free consultation from our engineers

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Frequently Asked Questions

How much energy can a VFD save?
A VFD can save 20-66% energy depending on the application. According to the Affinity Laws, power consumption varies with the cube of speed — so even a 20% speed reduction saves approximately 49% energy. Pumps and fans benefit the most.
What is the typical payback period for a VFD in Bangladesh?
Most VFD installations in Bangladesh achieve payback within 6-18 months, depending on motor size, running hours, and electricity rates. Large motors running 16+ hours/day see the fastest ROI. At the current industrial rate of ~8.19 BDT/kWh, savings add up quickly.
Which applications benefit most from VFDs?
Centrifugal pumps, fans, blowers, and compressors benefit the most because they follow the Affinity Laws (cubic relationship between speed and power). Textile machinery, conveyors, and mixers also see significant savings of 15-35%.
How accurate is this calculator?
This calculator uses the Affinity Laws (P ∝ N³) which are well-established for variable torque loads like pumps and fans. Actual savings depend on system design, motor efficiency, and operating conditions. For a precise analysis, contact our engineers for a free site assessment.
What VFD brand do you recommend?
We are an authorized distributor of Mitsubishi Electric VFDs in Bangladesh. The FR-E800 series is ideal for general-purpose applications up to 7.5kW. The FR-A800 handles mid-range (up to 55kW), and the FR-F800 is designed for large fans and pumps. All come with local warranty and support.

Ready to Start Saving?

Get a free site assessment and VFD recommendation from our engineers. We'll help you choose the right Mitsubishi Electric VFD for maximum savings.

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