Carbon Capture Costs: FEED & pre-FEED Cost Reports

Tampa Electric Company, with ION Clean Energy, Sargent & Lundy, Koch Specialty Plant Services, and Siemens Energy, completed a FEED study to retrofit post-combustion CO2 capture onto Unit 2 of the Polk Power Station, a 1,190 MWe (1,168 MWe net) 4x4x1 natural gas combined cycle plant in Mulberry, Florida. Using ION Clean Energy's ICE-31 advanced solvent across two parallel capture trains, the design targets at least 95% capture, nearly 3.7 million tonnes of CO2 per year, with downstream Siemens compression and dehydration and integrated pipeline transport to dedicated Class VI geologic storage. Each train includes a direct contact cooler, absorber, stripper, and compression, with the absorber columns sized to support 1x1 operation at 75% combustion turbine load to preserve dispatch flexibility. The study was funded under DOE Award DE-FE0032224 and produced an AACE Class 3 (-20%/+30%) capital cost and cost-of-capture estimate.

The Peterhead CCS Project in Aberdeenshire, Scotland, was designed to demonstrate the world’s first commercial-scale post-combustion CO₂ capture from a gas-fired power station. Using amine-based CANSOLV technology, it aimed to capture around one million tonnes of CO₂ annually from one turbine at SSE’s Peterhead Power Station, compress and condition it, and transport it via a new offshore pipeline for injection into the depleted Goldeneye gas reservoir over 2 km beneath the North Sea. The FEED study defined project scope, refined CAPEX and OPEX estimates, and assessed cost uncertainties, providing a basis for the Execute phase while also documenting budget performance and emergent costs during FEED.

Prairie State Generating Company is conducting a FEED study for a carbon capture facility on its 816 MWe Unit #2 in Illinois, using Mitsubishi Heavy Industries’ KM CDR Process™ with KS-21™ solvent. Designed to treat all flue gas from the unit, it would be the world’s largest post-combustion capture plant, compressing CO₂ for off-site sequestration. The project will leverage engineering support from Kiewit, Sargent & Lundy, and MHI.