Photovoltaic power plant in homes are experiencing a Renaissance. Efforts to increase self-sufficiency, reducing the utility bill, and financial support for a solution that generates the maximum energy generated at the point of origin, are turning toward hybrid photovoltaic power plants, a combined power plant with battery storage. Modern lithium batteries have a high service life, i.e. a high number of charge cycles, but at the cost of the managed care for each elementary battery cell. Tecomat Foxtrot has both HW and SW peripherals for advanced battery management. For the full use of solar energy, the weather forecast must also be taken into account. For online predictions for the location, Tecomat Foxtrot will download current data from the Internet.