Decentralised Electricity Storage Possibilities - From a Geographical Viewpoint
Subject: decentralised energy system
The development of energy systems has a quite conspicuous direction which can be described as renewable energy based decentralisation. This way of the energy evolution demands an extensive presence of storage applications, in regional and local level, as well. The battery storage is the simplest solution but the financial part of these applications (pumped hydro-, power-to-gas-, liquid air-, and compressed air energy storage) can be demanding. This is why this research is focused on some alternative technologies and their spatial dimension. This latter is considered as limitation in some of the researches. In our approach the spatial aspect is considered as possibility for the less-developed rural regions, as the research area of this paper, the operation area of the “Bükk LEADER rural development region” in North-East Hungary. According to the GIS analysis, all the four storage technologies seem to be applicable: 78-160 pumped storages; 29 power-to-gas storages; 7 liquid air storages and significant number of small-scale compressed air energy storage would be applicable in the research area. However, it is important to underline, that the above mentioned values are not comparable from the quantity of the stored energy point of view, because it is mostly affected by the technology.