Potential contribution of coal to the future global energy system
Using a bottom-up type global energy model, this article explores in detail the potential role of coal over the 21st century and focuses on the prospects for coal gasification-based conversion technologies with CO<Subscript>2</Subscript> capture and sequestration (CCS) under the CO<Subscript>2</Subscript> stabilization target of 550ppm. The results show that even in the CO<Subscript>2</Subscript>-constrained world, coal can remain one of the important primary energy sources throughout the century on the condition that the resulting CO<Subscript>2</Subscript> is properly captured and sequestered. Coal’s competitiveness in such a world would increase with the introduction of CCS, but decrease with the leak rate for CO<Subscript>2</Subscript> stored underground. For the optimal coal use, a common trend toward producing convenient and clean final energy carriers via gasification is observed. Under the CO<Subscript>2</Subscript> constraint, coal is increasingly converted via gasification with CCS into electricity and hydrogen, thereby providing CO<Subscript>2</Subscript>-neutral energy carriers and facilitating CO<Subscript>2</Subscript> capture, which helps China and India develop in a sustainable manner. These findings prove to be robust with respect to the costs of gasification-based conversion technologies and CCS. It is suggested that the establishment of reliable CCS technologies and low-cost gasification-based conversion technologies and their transfer to developing regions would raise the value of coal and provide energy security benefits under the CO<Subscript>2</Subscript> constraint. However, it is also indicated that large-scale introduction of coal with CCS into leaky reservoirs would cause large CO<Subscript>2</Subscript> emissions from leaks over the very long term. Copyright Springer Japan 2006
Year of publication: |
2006
|
---|---|
Authors: | Takeshita, Takayuki ; Yamaji, Kenji |
Published in: |
Environmental Economics and Policy Studies. - Society for Environmental Economics and Policy Studies - SEEPS. - Vol. 8.2006, 1, p. 55-87
|
Publisher: |
Society for Environmental Economics and Policy Studies - SEEPS |
Saved in:
Online Resource
Saved in favorites
Similar items by person
-
Prospects for interregional energy transportation in a CO<Subscript>2</Subscript>-constrained world
Takeshita, Takayuki, (2006)
-
Takeshita, Takayuki, (2002)
-
Important roles of Fischer-Tropsch synfuels in the global energy future
Takeshita, Takayuki, (2008)
- More ...