Make the most of solar energy and increased self-consumption


AC ELWA-E is a 0 - 3 kW linearly controlled water heating device for grid-connected photovoltaic systems. It uses excess PV energy for hot water heating and thus optimizes the self-consumption of the system. The linear control of the power sets the PV feed-in power to zero. The AC ELWA-E also has our proven hot water boost-backup function: if the sun does not seem to be enough, the hot water can optionally be heated to the desired temperature by using energy from the public power grid. It can be installed in hot water boilers and buffer storages.

Advantages of AC ELWA 2

  • Self-consumption increases significantly

  • Easy communication via network cable or powerline

  • Heating power is linearly controlled

  • Practically no energy is fed into the grid

  • Installation in hot water boilers and buffer storage possible

  • Flexible control by various inverters, battery systems and Smart Homes

AC ELWA-E in combination with my-PV WiFi Meter

In combination with my-PV WiFi Meter, the AC ELWA-E uses only excess energy from your photovoltaic system. The heat output is linearly controlled so that no energy is fed into the grid and your self-consumption increases significantly.

Further information about my-PV WiFi Meter.

Hausgrafik_AC ELWA-E_my-PV WiFi Meter_EN my-PV

AC ELWA-E in combination with battery storage

AC ELWA-E is compatible with many commercially available battery storage systems. Thereby it takes into account the optimal use of photovoltaic energy. The battery storage is always charged first. As soon as the battery is full, the AC ELWA-E takes over the storage of the surplus energy in the form of hot water. No surplus is fed into the grid in the process. Water is the cheapest form of storage and complements chemical storage batteries perfectly.

Click here for the compatible manufacturers.

Hausgrafik_AC ELWA-E_EN my-PV

AC ELWA-E in combination with Smart Home

Thanks to its flexible control, AC ELWA-E also communicates with smart home and energy management systems. The control is then carried out by the smart home system. As a result, even complex controls with consumer priority regulations can be realized.

In apartment buildings, we realize systems with a huge number of devices on this basis. Remote monitoring and energy billing at the apartment level are possible.

Click here for the compatible manufacturers.

Hausgrafik_AC ELWA-E_SmartHome_EN my-PV


my-PV Products in use

With our innovative partners we help you to use solar power effectively, easily and economically for your own needs. Learn more in our reference projects.

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Hot water with photovoltaics

Get the most out of your PV system!

Simply use your photovoltaic electricity yourself instead of feeding it into the public power grid. Our principle enables you to make the best possible use of your self-generated solar power in your own household.

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