Stiebel Eltron SG-Ready und Solar
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SG-Ready is a standardized signal that photovoltaic inverters or energy management systems send to heat pumps whenever cheap electricity is available. Stiebel Eltron heat pumps have supported this signal for many years, letting them run automatically on surplus solar power.
The Swiss website describes the coupling in detail, lists compatible device combinations, and points to energy manager systems such as the WPM EQ. Installers and planning offices will find the technical parameters needed for system sizing there. The combination of a brine-to-water heat pump, solar system and borehole heat exchanger is one of the most efficient heating systems available for new builds.