天然气
煤
温室气体
电
发电
环境科学
可再生能源
替代天然气
可再生天然气
稳健性(进化)
自然资源经济学
废物管理
化学
燃料气
经济
物理
工程类
地质学
合成气
功率(物理)
电气工程
有机化学
海洋学
燃烧
基因
氢
量子力学
生物化学
作者
John Bistline,David Young
标识
DOI:10.1038/s41467-022-32468-w
摘要
Abstract Replacing coal with natural gas has contributed to recent emissions reductions in the electric sector, but there are questions about the near- and long-term roles for gas under deep decarbonization. In this study, we assess the potential role for natural gas and carbon removal in deeply decarbonized electricity systems in the U.S. and evaluate the robustness of these insights to key technology and policy assumptions. We find that natural-gas-fired generation can lower the cost of electric sector decarbonization, a result that is robust to a range of sensitivities, when carbon removal is allowed under policy. Accelerating decarbonization to reach net-zero in 2035 entails greater contributions from natural gas than in 2050. Nonetheless, wind and solar have higher generation shares than natural gas for most regions and scenarios (52-66% variable renewables for net-zero scenarios versus 0-19% for gas), suggesting that natural gas generation can be substituted more easily than its capacity.
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