Featured in Distributed bliss – 06-2022

Efficiency and prices determine economics

Estimating the total cost of energy storage connected to a rooftop PV installation is a complex affair, involving factors such as tax, the policy environment, system lifetimes, and even the weather. As part of its extensive overview of distributed energy storage in Germany, pv magazine Deutschland analyzed the efficiency of different battery energy storage systems to create a comparable index that illustrates the cost of a stored kilowatt-hour.

By

Cornelia Lichner

24 Jun 2022

RCT’s Power Storage DC 10.0 product achieved the highest performance in our index, at 95.1%. | Image: pv magazine/Julia Malcher

Based on available information on system performance and pricing research conducted by pv magazine Deutschland, the following analysis looks at the efficiency of different solar plus storage systems available on the residential/commercial market in Germany. The System Performance Index (SPI) was developed by researchers at HTW Berlin and allows for comparison of systems across two performance classes. …

This article is part of pv+

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