Models and specifications of Danish commercial energy storage cabinets

Elsystemansvar A/S (subsidiary of Energinet) has asked Ea Energy Analyses to analyse the benefits and main drivers for the installation of storage units in the Danish power system. This will supplement the technology aspects in the recent Technology Catalogue on Energy Storage (DEA and Energinet, 2019).

The Danish Energy Agency publishes catalogues of technology data for energy technologies. Technology Catalogues provides information about technology, economy and environment for a number of energy installations and are among other things used by the Danish Energy Agency for energy projections.

Cost figures are derived from the Danish technology cata-logue (DEA and Energinet, 2019); operation and maintenance costs are ne-glected as their effect is limited. The figures do not include costs and revenues from arbitrage activities (i.e. from the charging pattern in the proposed strat-egy).

As reported in Table 1, two significant storage demonstration projects were carried out in Denmark in the past years. The batteries installed in Nordhavn (Copenhagen) were tested mainly for the provision of primary regulation (TSO service) and peak shaving (DSO service).

IEEE. Zeh, A., Muller, M., Naumann, M., & Hesse, H. (2016). Fundamentals of using battery energy storage systems to provide primary control reserves in Germany. Batteries. Table 9 carries the requirements and the remuneration for units participating in the Danish ancillary services markets.

In Denmark, a storage facility can by definition (Energinet, 2019): The participation of storage assets in different markets may be a challenge. These challenges might be just as much a consequence of regulatory design as technical limitations.