VDI presents planning tool for electricity storage systems

25.11.2025

Source: E & M powernews

A website provides experts with digital support for planning electricity storage systems in buildings.

The Association of German Engineers (VDI) has developed a web tool for simulating the use of electrical energy storage systems in buildings. It is used for the practical implementation of the guideline "Planning and integration of energy storage systems in building energy systems - Electrical energy storage systems (ESS)" in accordance with VDI 4657 Sheet 3.

The web tool developed for this purpose makes the application of this guideline much easier, according to a VDI press release. It provides a "sound basis for experts who want to integrate battery storage systems in buildings connected to the public distribution grid".

Users can upload their own load profiles for peak load capping applications. The tool then analyzes how different storage sizes influence the maximum peak load and displays the results graphically. A subsequent economic evaluation takes investment and electricity costs into account.

Another functional area is aimed at building energy systems with their own power generation. After entering the location, building type and technologies used, the tool simulates five storage sizes. The energy results are displayed in a structured manner and can be combined with a profitability analysis.

In addition to preset charging profiles, individual profiles can be integrated and simulated. This allows various operating scenarios to be mapped directly in the browser. Forecast-based charging is also available for systems with feed-in limitation. An energy management system adjusts the battery charge based on solar power forecasts in order to avoid unnecessarily early full charging in the morning and reduce curtailment at midday.

The web tool can be used free of charge. It can be accessed via the VDI website.

Author: Stefan Sagmeister