How do you calculate CO₂ compression electricity cost?

Multiply compressor power draw (kW) by runtime (hr) and electricity price ($/kWh). At 12 kW for 8 hr at $0.12/kWh that is 96 kWh and $11.52. Divide by tonnes compressed for cost per tonne.

What is the compression electricity cost per tonne CO₂?

In the example, $11.52 over 1,000 t CO₂ is about $0.0115 per tonne. Full-scale trains compressing to pipeline pressure run far higher because power draw is much larger; the calculation method is identical.

Why does CO₂ compression need so much power?

Raising CO₂ from near-atmospheric capture pressure to pipeline or injection pressure, often above 100 bar, takes multiple stages with intercooling. The work scales with the pressure ratio, so high delivery pressure means high power draw.

Compression power vs regeneration heat, which is bigger?

Regeneration heat usually dominates total capture energy, but compression is the largest electrical load. Run both calculators to see which controls your cost depending on energy prices and delivery pressure.

How do I reduce CO₂ compression cost?

Improve intercooling, optimize the staging and pressure ratio, use efficient compressor selection, and avoid over-compressing beyond the required delivery pressure. Each lowers the power draw term.

Carbon Capture & CO₂ Compression Equipment calculator

CO₂ Compressor Power Calculator

After CO₂ is captured it must be compressed, often to over 100 bar, into a dense or supercritical phase for pipeline transport or geologic storage, and that compression is the second-largest energy demand after solvent regeneration. This calculator converts the compressor power draw, runtime and electricity price into a compression electricity cost, then divides by tonnes compressed to give cost per tonne CO₂. Plant and energy engineers use it to track compressor energy efficiency and to budget the electricity that moves captured CO₂ to its end point. Multi-stage CO₂ compression trains are power-hungry, so the per-tonne figure is a key lever in the overall cost of carbon capture and storage.

What this calculator does

Estimate CO₂ compressor electricity cost and specific cost per tonne for a planned compression run or operating period.
Use it when co₂ compressor power in carbon capture and co₂ compression equipment is up for an upgrade and you want a defensible savings story.
It multiplies compressor power draw by runtime and electricity price for total cost, then divides by tonnes compressed for cost per tonne.

Formula used

CO₂ compression electricity cost = CO₂ compressor power draw × compression runtime × electricity price
Compression electricity cost per tonne CO₂ = CO₂ compression electricity cost ÷ CO₂ compressed

Inputs explained

CO₂ compressor power draw:
Compression runtime:
Electricity price:
CO₂ compressed:

How to use the result

Use it to budget compression electricity and to benchmark compressor specific power against design as conditions change.
It uses a single average power draw; real multi-stage compressors swing with suction pressure, intercooling and the CO₂ phase target, so a flat draw smooths over those variations.

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.
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 CO₂ compression electricity cost? Multiply compressor power draw (kW) by runtime (hr) and electricity price ($/kWh). At 12 kW for 8 hr at $0.12/kWh that is 96 kWh and $11.52. Divide by tonnes compressed for cost per tonne.
What is the compression electricity cost per tonne CO₂? In the example, $11.52 over 1,000 t CO₂ is about $0.0115 per tonne. Full-scale trains compressing to pipeline pressure run far higher because power draw is much larger; the calculation method is identical.
Why does CO₂ compression need so much power? Raising CO₂ from near-atmospheric capture pressure to pipeline or injection pressure, often above 100 bar, takes multiple stages with intercooling. The work scales with the pressure ratio, so high delivery pressure means high power draw.
Compression power vs regeneration heat, which is bigger? Regeneration heat usually dominates total capture energy, but compression is the largest electrical load. Run both calculators to see which controls your cost depending on energy prices and delivery pressure.
How do I reduce CO₂ compression cost? Improve intercooling, optimize the staging and pressure ratio, use efficient compressor selection, and avoid over-compressing beyond the required delivery pressure. Each lowers the power draw term.

Last reviewed 2026-05-12.