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Conditions for a 100% renewable energy supply system in Japan and South Korea

机译：日本和韩国建立100％可再生能源供应系统的条件

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In the wake of the Fukushima nuclear accident, alternative energy paths have been discussed for Japan, but except for a few studies the assumption is usually made that Japan is too densely populated to be suited for a near-100% sustainable, indigenous energy provision. The studies emphasizing renewable energy have proposed the use of photovoltaic power as the main source of electricity supply, in combination with diurnal battery storage and supplemented by other renewable sources such as wind, hydro, and geothermal power. Here, an alternative approach is explored, with wind and derived hydrogen production as the main energy source, but still using solar energy, biofuels, and hydropower in a resilient combination allowing full satisfaction of demands in all sectors of the economy, i.e., for dedicated electricity, transportation energy as well as heat for processes and comfort. Furthermore, the possible advantage of establishing a regional energy system with energy interchange and coordinated management of the mix of renewable energy resources across a wider region is discussed. As the closest neighbor, the energy system of South Korea is considered, first regarding the possibility of a similar full renewable energy reliance, and then for possible synergetic effects of connecting the Korean and the Japanese energy systems, in order to be able to better cope with the intermittency of renewable energy source flows.
机译：在福岛核事故之后，日本已经讨论了替代能源之路，但除少数研究外，通常假设日本人口太稠密，无法满足近100％的可持续本地能源供应。强调可再生能源的研究建议将光伏发电作为主要的电力供应，与日间的电池存储相结合，并辅以其他可再生能源，例如风能，水能和地热能。在这里，探索了一种替代方法，以风能和衍生氢的生产为主要能源，但仍以弹性组合使用太阳能，生物燃料和水力发电，从而完全满足了经济各部门的需求，即专用电力，运输能源以及过程和舒适度的热量。此外，还讨论了建立区域能源系统的可能优势，该区域能源系统具有能量交换功能，并在更广泛的区域内协调管理可再生能源的混合使用。作为最接近的邻国，首先考虑韩国的能源系统，首先要考虑类似的完全可再生能源依赖的可能性，然后再考虑将韩国和日本的能源系统连接起来可能产生的协同效应，以便能够更好地应对与可再生能源流动的间歇性。

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