How Delayed Learning about Climate Uncertainty Impacts Decarbonization Investment Strategies

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Tác giả: Adam Michael Bauer

Ngôn ngữ: eng

Ký hiệu phân loại: 304.25 Climatic and weather factors

Thông tin xuất bản: Washington, DC: World Bank, 2024

Mô tả vật lý:

Bộ sưu tập: Tài liệu truy cập mở

ID: 294680

 The Paris Agreement established that global warming should be limited to "well below" 2°C and encouraged efforts to limit warming to 1.5°C. Achieving this goal presents a challenge, especially given (i) economic inertia and adjustment costs, which penalize a swift transition away from fossil fuels, and (ii) climate uncertainty that, for example, hinders the ability to predict the amount of emissions that can be released before a given temperature target is exceeded. This paper presents a modeling framework that explores optimal decarbonization investment strategy when both adjustment costs and climate uncertainty are present. The findings show that climate uncertainty impacts investment in three ways: (i) the cost of policy increases, especially when adjustment costs are present
  (ii) abatement investment is front-loaded relative to the certainty policy
  and (iii) the sectoral allocation of investment changes to favor declining investment pathways rather than bell-shaped paths. The latter effect is especially pronounced in hard-to-abate sectors, such as heavy industry. Each of these effects can be traced back to the carbon price distribution inheriting a "heavy tail" when climate uncertainty is present. The paper highlights how climate uncertainty and adjustment costs combined result in a more aggressive least-cost strategy for decarbonization investment
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