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Allocating Output Electricity in a Solar-Aided Coal-Fired Power Generation System and Assessing Its CO2 Emission Reductions in China

by Jun Zhao 1,* and Kun Yang 2
1
School of Humanities and Social Sciences, North China Electric Power University, Beijing 102206, China
2
School of Economics and Management, North China Electric Power University, Beijing 102206, China
*
Author to whom correspondence should be addressed.
Sustainability 2020, 12(2), 673; https://doi.org/10.3390/su12020673
Received: 19 December 2019 / Revised: 11 January 2020 / Accepted: 13 January 2020 / Published: 16 January 2020
Coal-fired power generation in China is facing huge challenges due to its high share in the total electricity generation and its environmental problems. A solar-aided coal-fired power generation (SACPG) system, based on the integration of solar thermal energy into a conventional coal-fired power system, is an effective way to utilize solar energy and reduce coal consumption. The reasonable allocation of output electricity to solar energy and coal in a SACPG system and the evaluation of its CO2 emission reductions can help to acquire subsidies or financial support granted to renewable electricity and CO2 emission reductions. A methodology is proposed from the view of the technical characteristics of a SACPG system and the government regulation. The coal-to-electricity efficiency of the baseline unit or the coal-fired power system in a SACPG system is the key factor in the methodology, and it can be calculated on the basis of the norm of energy consumption of coal-fired power units in China. Then, the allocation of the output electricity to solar energy and coal can be calculated, and so can the CO2 emission reductions by the solar-coal hybrid system. Taking a 600 MW SACPG system as an example, the methodology is further illustrated. The methodology can guarantee that the calculation of output electricity allocation in a SACPG system and the calculation of its CO2 emission reductions are accurate, conservative and transparent for its subsidies or financial support.
Keywords: solar-aided coal-fired power generation system; allocation and assessment methodology in solar-coal hybrid systems; solar energy integration; coal-fired power generation; CO2 emission reductions solar-aided coal-fired power generation system; allocation and assessment methodology in solar-coal hybrid systems; solar energy integration; coal-fired power generation; CO2 emission reductions
MDPI and ACS Style

Zhao, J.; Yang, K. Allocating Output Electricity in a Solar-Aided Coal-Fired Power Generation System and Assessing Its CO2 Emission Reductions in China. Sustainability 2020, 12, 673.

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