Abstract

The following storage options were evaluated in this study:

• Enhanced oil recovery
• Enhanced coal bed methane recovery
• Depleted oil reservoir storage
• Depleted gas reservoir storage
• Deep saline aquifer storage
• Ocean storage via pipeline
• Ocean storage via tanker

For each option, the CO₂ source is a nominal 500 MWe gross Integrated Gasification Combined Cycle (IGCC) plant, operating at an 80 percent capacity factor. This plant delivers 7,389 tonnes of CO₂ per day. Given this source of CO₂, a baseline conceptual design was generated for each option. From the baseline conceptual design, capital and O&M costs, and an economic analysis with several figures of merits were developed. These were then used to develop sensitivity and life cycle analyses.

In the case of the ocean storage options, it is assumed that three IGCC power plants supply CO₂ to a shoreline collection point. Based on this, the ocean storage systems need to be designed to handle three times the quantity of CO₂, i.e. 22,167 tonnes of CO₂ per day.