Smart Energy Technologies & Energy Storage
Energy storage is a key enabler for high shares of renewables in power supply systems – for mini-grids as well as for interconnected grids. Especially advanced battery storage technologies play a major role in this context allowing new business models for various stakeholders of behind-the-meter and before-the-meter applications on a distribution and transmission grid level. In the first part of this presentation an overview of these various opportunities will be described and selected international examples will be highlighted. Corresponding challenges will be addressed, especially these issues which come along with innovative technologies and new systems concepts. The second part of this presentation deals with risk mitigation as long-term experiences especially with advanced battery technologies are missing, which leads to a lack of confidence for the investment and insurance sector. Therefore quality assurance measures are key. Amongst others the single steps of quality assurance include proper analyses of load profiles, simulation based system design, component selection according to the specific requirements of the single project, characterization of the components, yield prediction in case of a combination with a PV generator, system testing including commissioning tests as well as quality monitoring to identify at an early stage technical problems on the component and/or system level as well as their optimization potential. This presentation will describe the developed concept for quality assurance and will show results of residential PV battery systems, field examples of mini-grid implementations as well as commercial PV battery applications highlighting lessons-learnt from various projects.