Phillips Ch10 Ppt 1

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A brief overview of the cost drivers for CO2 capture from coal power plants and what can be done to decrease those costs.

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Phillips Ch10 Ppt 1

  1. 1. Key Cost and Performance Drivers for CO 2 Capture and Storage Technology Dr. Jeff Phillips (jphillip@epri.com) Senior Program Manager Advanced Generation Austin, Texas February 17, 2010
  2. 2. Thought Experiment: If we could develop CO 2 Capture and Storage Technology that had no capital costs and no operating and maintenance costs beyond the loss in power output from current technology, what would be its impact on the cost of generating electricity?
  3. 3. Impact of “no cost” CCS on coal plant economics (assumptions listed at end of presentation) $0 $0 Non-fuel operating costs for CCS system $92/MWhr (9.2 cents per kWhr) $66/MWhr (6.6 cents per kWhr) Price needed for electricity to cover all costs $126 million $126 million Fuel Cost for 7000 hours of operation $2.65 billion $2.65 billion Installed Cost 720 MW 1000 MW Net Power Output With CCS, at no additional capital or operating cost No CCS
  4. 4. Thought Experiment: Now let’s look at the impact on cost of today’s CO2 capture and storage technology including the additional equipment, operational and maintenance costs.
  5. 5. Impact of full cost CCS on coal plant economics (assumptions listed at end of presentation) $117/MWhr (11.7 cents per kWhr) $66/MWhr (6.6 cents per kWhr) Price needed for electricity to cover all costs $71 million $0 Non-fuel operating costs for CCS system $126 million $126 million Fuel Cost for 7000 hours of operation $3.19 billion $2.65 billion Installed Cost 720 MW 1000 MW Net Power Output With “full cost” CCS No CCS
  6. 6. CCS Economics Summary $117/MWhr (77%) Electricity price with CCS +$15/MWhr (23%) Impact of capital cost & maintenance of CCS equipment +$10/MWhr (15%) Impact of CO 2 transportation and storage cost (assumes $10/tonne cost) +$26/MWhr ( 39% of base ) Impact of Power Loss due to CCS $66/MWhr Electricity price without CCS
  7. 7. Observations <ul><li>The negative impact on power plant output of adding current CO 2 capture and storage technology is the biggest economic burden </li></ul><ul><li>Compressing the captured CO 2 to the pressures needed for EOR or deep geologic storage (>2000 psi) requires a lot of power – responsible for about half of the loss in power output </li></ul><ul><li>Capturing the CO 2 also results in a loss in power </li></ul><ul><ul><li>Steam to regenerate the capture solvent in post-combustion capture </li></ul></ul><ul><ul><li>Electricity to produce oxygen for IGCCs (pre-combustion capture) and oxy-combustion </li></ul></ul><ul><ul><li>Steam to convert CO to CO 2 in pre-combustion capture </li></ul></ul>
  8. 8. Opportunities for Improvement <ul><li>More efficient CO 2 compression technology and processes </li></ul><ul><li>CO 2 capture processes which produce CO 2 at higher pressures </li></ul><ul><li>More efficient oxygen production technology </li></ul><ul><li>Solvents which require less heat for regeneration </li></ul><ul><li>Better management of “waste heat” in the overall process </li></ul>
  9. 9. Together…Shaping the Future of Electricity
  10. 10. Thought Experiment Assumptions <ul><li>Specific total capital requirement (TCR) of base plant is $2650/kW and thermal efficiency is 38%, see EPRI Report 1019539 on www.epri.com for details. </li></ul><ul><li>Delivered fuel cost assumed to be $2/MMBtu at plant. </li></ul><ul><li>7000 hours of full-load operation per year represents a capacity factor of 80% which is typical of a base load coal plant. </li></ul><ul><li>Thermal efficiency of plant with CCS is 27.4% and specific TCR of “full cost” plant is $4425/kW, ref. EPRI Report 1019539. </li></ul><ul><li>Non-fuel O&M CCS costs include additional plant personnel, scheduled equipment maintenance, and fee of $10/ton CO 2 to pipeline and storage operator. These estimates taken from EPRI report 1017495. </li></ul><ul><li>“ Electricity price needed to cover all costs” is calculated using the levelized cost of electricity methodology described in EPRI report 1019539. </li></ul>

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