How do you calculate cryogenic pump energy use?

Multiply the connected motor load in kW by the runtime in hours. A 12 kW pump running 8 hours uses 12 x 8 = 96 kWh for that transfer period.

What does the pump energy cost in the example?

$11.52. The 96 kWh used multiplied by the $0.12/kWh blended rate gives $11.52 for the full transfer.

What is the energy cost per unit of liquid moved?

About $0.0115 per unit. Spreading the $11.52 cost across 1,000 gallons (or kg) gives roughly 1.15 cents per unit pumped, which is what flows into per-unit product costing.

Why use connected motor load instead of measured draw?

Connected load is a quick, conservative proxy when you lack a meter. Real draw varies with head and flow, so for precise costing use measured kW or a load factor against the nameplate rating.

What is the hourly pump energy cost?

$1.44 per hour in the example — 12 kW times $0.12/kWh. That hourly figure is handy for estimating cost on transfers of different durations.

How can I lower cryogenic pump energy cost?

Minimize cooldown losses, avoid recirculation when not transferring, right-size the pump to the duty, shift transfers to off-peak rates, and keep the suction subcooled to avoid cavitation that wastes energy.

Cryogenic Storage & LNG Equipment calculator

Cryogenic Pump Energy Load Calculator

Cryogenic pump energy load is the electricity a cryogenic transfer pump consumes to move LNG, liquid nitrogen, oxygen, or argon over a transfer period, and the cost that energy represents. Plant engineers and energy managers use it to attribute power cost to each transfer batch and to compute a cost per gallon or kilogram of liquid pumped. Because cryogenic pumps run submerged or close-coupled and often cycle around fill and transfer operations, their energy footprint is easy to overlook yet meaningful at scale. Turning kW and runtime into a per-unit cost makes pumping energy visible in product costing and efficiency targets.

What this calculator does

Calculate energy cost for a cryogenic transfer or circulation pump from motor load, runtime, power rate, and liquid moved.
Use it when cryogenic pump energy load in cryogenic storage and lng equipment is up for an upgrade and you want a defensible savings story.
It computes the energy a cryogenic pump uses (motor load times runtime), the cost of that energy at your electricity rate, and the cost spread across the liquid volume moved.

Formula used

Pump energy used = cryogenic pump connected motor load × pump runtime
Cryogenic pump energy cost = pump energy used × blended electricity rate
Pump energy cost per liquid unit = pump energy cost ÷ cryogenic liquid moved

Inputs explained

Cryogenic pump connected motor load:
Pump runtime for transfer period:
Blended electricity rate:
Cryogenic liquid moved:

How to use the result

Use it to cost individual transfer operations, benchmark pump efficiency, or allocate pumping energy into per-unit product cost.
It uses connected motor load as a flat draw; it does not account for variable loading, soft-start surges, motor efficiency, power factor, or standby and cooldown energy between transfers.

Current U.S. benchmarks

As of Apr 2026, industrial electricity averages 8.7 cents per kWh across the U.S. (EIA), up 5.5% from a year earlier. State averages range widely, so plants should confirm against their own tariff.
Global copper trades at $13,484 per tonne (IMF via FRED, May 2026), up 41.5% in a year, and U.S. industrial electricity averages 8.66 cents per kWh. Both feed electrified-hardware unit economics.
Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).

Common questions

How do you calculate cryogenic pump energy use? Multiply the connected motor load in kW by the runtime in hours. A 12 kW pump running 8 hours uses 12 x 8 = 96 kWh for that transfer period.
What does the pump energy cost in the example? $11.52. The 96 kWh used multiplied by the $0.12/kWh blended rate gives $11.52 for the full transfer.
What is the energy cost per unit of liquid moved? About $0.0115 per unit. Spreading the $11.52 cost across 1,000 gallons (or kg) gives roughly 1.15 cents per unit pumped, which is what flows into per-unit product costing.
Why use connected motor load instead of measured draw? Connected load is a quick, conservative proxy when you lack a meter. Real draw varies with head and flow, so for precise costing use measured kW or a load factor against the nameplate rating.
What is the hourly pump energy cost? $1.44 per hour in the example — 12 kW times $0.12/kWh. That hourly figure is handy for estimating cost on transfers of different durations.

Last reviewed 2026-05-12.