主要钢铁公司的气候目标:对集体目标和计划减排措施的评估

IF 5.8 Q2 ENERGY & FUELS Energy and climate change Pub Date : 2023-11-07 DOI:10.1016/j.egycc.2023.100120
Maria Jose de Villafranca Casas , Sybrig Smit , Anna Nilsson , Takeshi Kuramochi
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引用次数: 0

摘要

本文系统评估了截至 2022 年中期最大钢铁生产企业设定的温室气体减排目标的现状、稳健性和潜在影响。评估范围包括 60 家产量最大的钢铁公司,占全球钢铁产量的 60% 以上。我们发现,只有 30 家公司制定了 2025 年至 2060 年不同时间段的温室气体减排目标。即使剔除 2060 年净零排放的 15 家中国国有企业,也有 15 家企业没有减排目标。21 家公司有长期目标(2040 年或之后),其中 18 家是净零排放目标;除一家公司外,其他所有公司都有中期目标。如果 60 家公司确定的所有气候目标都能实现,与基准情景相比,到 2030 年,60 家公司的二氧化碳年排放量最多可减少 12%,到 2050 年,最多可减少 39%。假设全球粗钢需求量从 2019 年的 19 亿吨逐渐增加到 2050 年的 250 亿吨,并假设全球钢铁行业其他部门的发展趋势与这 60 家公司相似,我们估计,全球钢铁行业目前的减排目标将使其到 2050 年的排放量比 2019 年的水平减少 38% 到 53%(3.钢铁企业在制定明确的减排计划以实现其目标方面也相对滞后。我们发现,在 30 家有目标的钢铁生产商中,有 14 家没有提供减排计划。在减排计划中确定了至少一项减排措施的 16 家公司中,最受欢迎的措施是氢基 DRI(14 家)、加强使用可再生电力(13 家)和高炉碳捕集利用与封存(CCU/S)(9 家)。虽然钢铁企业已开始为长期深度脱碳采取行动令人鼓舞,但我们的研究结果表明,未来还有很长的路要走,需要大大加快行动步伐。
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Climate targets by major steel companies: An assessment of collective ambition and planned emission reduction measures

This article systematically assesses the status, robustness, and potential impact of greenhouse gas emission reduction targets set by the largest steel producer companies as of mid-2022. The assessment covers the 60 largest steel companies by volume, accounting for more than 60 % of global steel production. Data on company-level greenhouse gas emission reduction targets and emission reduction measures were collected from publicly available documents.

We found that only 30 companies have their own greenhouse gas emission reduction targets of varying timeframes between 2025 and 2060. Even when excluding the 15 Chinese state-owned companies that are under the national 2060 net zero target, 15 companies had no emission reduction targets. Twenty-one companies had long-term targets (2040 or after), of which 18 were net zero emission targets; all but one also had interim targets. If all climate targets identified among the 60 companies are achieved, annual CO2 emissions for the 60 companies could be reduced by up to 12 % by 2030 and up to 39 % by 2050 in comparison to a baseline scenario. Assuming a gradual increase in global crude steel demand from 1.9 Gt in 2019 to 2.5 Gt in 2050 and assuming similar trends for the rest of the global iron and steel sector as observed for the 60 companies, we estimate that the current ambition of the global iron and steel sector on emission reductions would lead to a reduction of 38 % to 53 % by 2050 from 2019 levels (3.4 GtCO2 to 1.6–2.1 GtCO2), or compared to a 32 % to 43 % reduction in a baseline scenario in 2050.

Steel companies are also lagging in setting clear emission reduction plans to achieve their targets. We found that 14 out of the 30 steel producers with targets did not provide an emission reduction plan. The most popular measures amongst the 16 companies that identified at least one measure to achieve their target in their emission reduction plans were hydrogen-based DRI (n = 14), enhanced use of renewable electricity (n = 13) and Carbon Capture Utilisation and Storage (CCU/S) for blast furnaces (n = 9). While it is encouraging that the steel companies have started acting toward long-term deep decarbonisation, our findings suggest that there is a long way ahead and the action needs to be accelerated considerably.

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来源期刊
Energy and climate change
Energy and climate change Global and Planetary Change, Renewable Energy, Sustainability and the Environment, Management, Monitoring, Policy and Law
CiteScore
7.90
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