Considering environmental impacts of energy storage technologies: A life cycle assessment of power-to-gas business models
Considering environmental impacts of energy storage technologies: A life cycle assessment of power-to-gas business models
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考虑储能技术的环境影响：电转气商业模式的生命周期评估
DOI：
10.1016/j.energy.2018.07.105
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发表时间：
2018
期刊：
影响因子：
9
通讯作者：
M. Topić
中科院分区：
文献类型：
--
作者：
Karin Tschiggerl;C. Sledz;M. Topić
电力转天然气技术为高效和大量储存能源提供了一个有希望的答案。可再生能源由此转化为天然气，然后利用现有的天然气基础设施进行运输和储存。一种相当新的方法是将来自挥发性可再生能源的能量以氢或甲烷的形式储存在地质构造的孔隙空间中。除了技术和法律的可行性之外，在大规模部署之前，还必须考虑到实施的环境影响。在示范项目的框架内，开发了替代商业模式，并使用生命周期评估（LCA）方法评估了其对环境的影响。所进行的生命周期影响评估清楚地表明，无论实施何种商业模式，能源都是电力天然气工厂环境绩效的关键因素。这意味着后台进程主导前台进程。生命周期评估包括对相关参数的敏感性分析和不同环境影响指标的结果。此外，还发现了进一步提高发电厂和相关单位效率的潜力。这一创新方法在可再生能源储存方面的成果对于未来能源系统的战略发展具有突出的重要性。
The Power-to-Gas technology offers a promising answer to store energy efficiently and in high amounts. Renewable energy is thereby transformed into gas, which is then transported and stored using the existing infrastructure for natural gas. A quite new approach is to store energy from volatile renewable sources in the forms of hydrogen or methane in pore spaces of geological formations. Besides its technical and legal feasibility the environmental impacts of an implementation have to be considered before large-scale deployment is tackled. In the frame of the demonstration project alternative business models were developed and evaluated regarding their environmental effects using the methodology of Life Cycle Assessment (LCA). The conducted Life Cycle Impact Assessment clearly shows that, regardless of the implemented business model, the source of energy is the key factor for the environmental performance of a Power-to-Gas plant. This means that background processes dominate the foreground processes. The LCA includes sensitivity analyses for relevant parameters and results for different environmental impact indicators. Additionally, further potential to increase the efficiency of Power-to-Gas plants and involved units was uncovered. The outcomes of this innovative approach regarding the storage of renewable energies are from outstanding importance for the strategic development of future energy systems.