Abstract: An energy management system for managing an energy flow of a photovoltaic system comprising a user interface used to notify a user about an emergency operation mode of the photovoltaic system triggered by a power supply grid failure and to provide recommendations for the user with respect to a handling of power-consuming loads of a load network of the photovoltaic system during the power supply grid failure.

Abstract: In a method for analyzing an electrical energy storage device, in particular an accumulator or a battery, the energy storage device is electrically connected to at least one consumer and to at least one electrical energy source in an electrical energy supply system. An electrical energy flow into or out of the energy storage device is directly or indirectly measured using a measuring unit, in particular a smart meter, and at least one energy storage device parameter is iteratively determined on the basis of recorded values of the measured energy flow. The energy flow is expressed by the unit energy per time, and an energy profile of the energy flowing into the energy storage device and extracted from the energy storage device is identified from the energy flow by integrating the energy flow over time. The at least one parameter is determined on the basis of the energy profile.

Abstract: Energy system (1) comprising an inverter (3) for converting an electrical direct voltage into an alternating voltage which can be used to supply electrical consumption units (4) of the energy system (1) and can be converted into heat by means of at least one heat pump (7) of the energy system (1), characterised in that in that the heat pump (7) can be controlled by means of a system control (10) of the energy system (1) via a control interface (12) in accordance with a heat pump configuration file (WPK) loaded specifically for the at least one heat pump (7) in a data memory (11) of the system control (10), wherein a communication of the system control (10) with a heat pump control (8) provided for the heat pump (7) is effected in accordance with at least one control type of the heat pump (7) indicated in the heat pump configuration file (WPK).