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Solutions · Energy efficiency

Pump energy efficiency: how much you can save

Pumps use a large share of the energy in a factory or a water plant, and many run far from their best efficiency point. Calculate the possible savings and receive a free assessment based on real data.

Request the free assessment 0770 579 904
Why it matters

Energy costs more than the pump

Over the service life of an industrial pump, the energy it consumes usually costs several times the price of the pump. That is why a correctly selected pump pays for itself through savings.

The largest losses come from oversized pumps controlled by throttling valves, from old motors and from the lack of variable speed. We start from the station's data and tell you which change gives the best return on investment.

Correct sizingthe pump runs close to its maximum efficiency
Variable speedPumpDrive variable speed drive instead of a throttling valve
Efficient motorsIE3–IE5 efficiency classes
Free assessmentbased on operating data, before any quote
Calculator

What your pump costs you per year and how much you can save

Enter the data of one pump. The result is an estimate: the exact figure comes from an assessment of the installation's real data.

Typical savings: 10–20% through correct sizing, 20–40% with variable speed at variable flow, 3–10% from a more efficient motor alone.

Annual consumption—
Annual energy cost—
Annual savings—
Savings over 10 years—
Request an assessment on real data
Technical guide

Where the savings come from

Oversized pumps

A pump selected “with a margin” runs throttled, at low efficiency. Replacing it with the correct size directly reduces consumption.

Valve control

A throttling valve turns energy into losses. Variable speed matches the pump to the actual demand.

Old motors

An IE4–IE5 motor uses noticeably less energy than an old one, especially in continuous operation.

Hydraulic wear

Worn wear rings and impellers reduce efficiency over time. New parts bring the pump back close to its original performance.

KSB equipment

What we supply for this application

Each product has technical data, a PDF datasheet and a quote request. Add them to your request or let the engineer choose.

Frequently asked questions

Questions about energy efficiency

How much can I save by replacing an old pump?

It depends on how far the pump runs from its best efficiency point and on the operating hours. The calculator above gives you an order of magnitude; an assessment of real data gives you the figure for your installation.

What data do you need for the assessment?

The pump type (or a photo of the nameplate), the flow rate and operating pressure, the annual operating hours, the motor power and, if you have it, the measured consumption.

Is the assessment free?

Yes. We analyse the data and send you a proposal with the estimated savings, before any quote.

Is a variable speed drive worth it?

It is worth it when the flow rate varies or when the pump is controlled by a valve. For pumps running at constant flow, correct sizing matters more.

Request

Want the figures for your station?

Send the pump type, flow rate, pressure, operating hours and motor power.

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