Multi-use of Community Energy Storage

Energy Services and their Compatibility with Increasing Self-consumption as Primary Service with a Focus on Germany

DOI

10.2991/ahe.k.220301.015How to use a DOI?

Keywords

community energy storage; multi-use; collective self-consumption; energy services; energy prosumers; energy communities

Abstract

Battery energy storages play an important role in the energy transition toward an energy system based on renewable resources. Today, batteries on a household and community level in Germany are primarily used to increase consumption of self-produced electricity. However, batteries used solely for increasing self-consumption are neither profitable yet from an economic point of view, nor is the same battery capacity needed at all times when used only for self-consumption. At a considerable time of the day, the battery is either empty or fully loaded and could be used for other services. Community energy storages show several advantages compared to home storages and might also help to explore possibilities of using a battery for multi-use due to the size and simplification of control. Thereby, extra profits for a positive business case can be generated and a more efficient use of the battery is made possible.

This paper investigates and structures possible services of community energy storages in Germany. It highlights the most promising services for multi-use and shows what prerequisites regarding the state of charge of the battery is necessary to perform the service. Moreover, a technical simulation of energy flows of a community with a variation in the number of households, photovoltaic capacity, and battery dimensions provides evidence that multi-use of community energy storage is even possible with only minor effects on self-consumption levels inside the community. For instance, the results show, that, on average, more than 30% of battery capacity can be used for additional services if the share of storage capacity used for self-consumption is adjusted monthly depending on the season and solar radiation.

Copyright

© 2022 The Authors. Published by Atlantis Press International B.V.

Open Access

This is an open access article under the CC BY-NC license.

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TY  - CONF
AU  - Jan Wiesenthal
AU  - Frieder Schnabel
PY  - 2022
DA  - 2022/03/03
TI  - Multi-use of Community Energy Storage
BT  - Proceedings of the International Renewable Energy Storage Conference 2021 (IRES 2021)
PB  - Atlantis Press
SP  - 143
EP  - 151
SN  - 2589-4943
UR  - https://doi.org/10.2991/ahe.k.220301.015
DO  - 10.2991/ahe.k.220301.015
ID  - Wiesenthal2022
ER  -