Surplus photovoltaic power not used by self-consumption can be used for regenerative heating of the buffer storage tank.

The tubra®-eTherm is a hydraulic unit with integrated control for thermal storage of photovoltaic power for self-consumption optimization. The compact hydraulic unit can be connected modularly to hot water tanks with an integrated heat register and buffer tanks with heating water.

• applicable on drinking water or buffer storage tanks
• optimal for retrofitting to existing storage tanks
• energy storage in thermal accumulators with significantly higher storage capacities than in batteries
• control of charging temperature for immediately usable heat tubra®-eTherm P and C
• no required minimum terms or minimum services
• CE compliant in terms of EMC and electrical safety