Quantifying operational lifetimes for coal power plants under the Paris goals

Ryna Yiyun Cui (), Nathan Hultman, Morgan R. Edwards, Linlang He, Arijit Sen, Kavita Surana, Haewon McJeon, Gokul Iyer, Pralit Patel, Sha Yu, Ted Nace and Christine Shearer
Additional contact information
Ryna Yiyun Cui: University of Maryland
Nathan Hultman: University of Maryland
Morgan R. Edwards: University of Maryland
Linlang He: University of Maryland
Arijit Sen: University of Maryland
Kavita Surana: University of Maryland
Haewon McJeon: 5825 University Research Court
Gokul Iyer: 5825 University Research Court
Pralit Patel: 5825 University Research Court
Sha Yu: 5825 University Research Court
Ted Nace: Global Energy Monitor
Christine Shearer: Global Energy Monitor

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract A rapid transition away from unabated coal use is essential to fulfilling the Paris climate goals. However, many countries are actively building and operating coal power plants. Here we use plant-level data to specify alternative trajectories for coal technologies in an integrated assessment model. We then quantify cost-effective retirement pathways for global and country-level coal fleets to limit long-term temperature change. We present our results using a decision-relevant metric: the operational lifetime limit. Even if no new plants are built, the lifetimes of existing units are reduced to approximately 35 years in a well-below 2 °C scenario or 20 years in a 1.5 °C scenario. The risk of continued coal expansion, including the near-term growth permitted in some Nationally Determined Contributions (NDCs), is large. The lifetime limits for both 2 °C and 1.5 °C are reduced by 5 years if plants under construction come online and 10 years if all proposed projects are built.

Date: 2019
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DOI: 10.1038/s41467-019-12618-3

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