CEZ Distribuce and its partners aim at demonstrating how the combination of new smart PV inverters with residential storage batteries, under real operating conditions within LV distribution networks, can increase the DER hosting capacity and flexibility in case of grid constraints. A successful demonstration requires appropriate conditions for testing residential PV systems using smart PV inverters with residential batteries installed under preselected MV/LV secondary substations.

An area with high penetration of PV systems and residential batteries compared to the baseline scenario were needed. To obtain a high penetration of systems in the selected LV network, CEZ Solarni secured customer recruitment and the subsequent installation of rooftop PV systems with smart PV inverters and residential storage batteries in the Luzany area.

The last systems needed for the project were installed and commissioned in July and August 2019. The demonstration of solution is ongoing and will be evaluated in the upcoming months.