Item number: 3700
EAN: 4250497813935

my-PV AC ELWA-E photovoltaic water-heater

AC ELWA-E is a 3kW continuously adjustable hot water generating device for grid-connected photovoltaic systems

The AC ELWA-E communicates via Ethernet with battery storage or smart home solutions and minimizes the feed-in of solar energy by using excess energy to produce hot water. The battery storage and electrical consumers have priority. Decentralised battery storage and hot water production avoids the usual distribution losses, while at the same time providing hygienic hot water.


  • you convert self-generated electricity into hot water
  • continuously adjustable control 0 - 3000W for maximum self-consumption
  • increase your self-consumption rate up to over 75%
  • you produce hot water even in case of power failure
  • you avoid energy loss and downtime problems
  • intelligent communication with energy management systems and battery storage
  • optimal PV-utilization with battery and water storage

Choose tax zone / country of delivery

starting from 874,98 €

including 19% VAT.

Recommended retail price: 899,99 €
(You save 2.78%, that is 25,01 €)
Shipping time: 299 - 300 workdays
Available from: 25.09.2023 (Pre-order is possible)
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AC ELWA-E Photovoltaic hot water heating device

AC ELWA-E communicates with the energy management system of the house or the battery management system As soon as excess energy is detected the manager activates the AC ELWA-E, the excess energy is transformed into hot water. With this method 10 - 20 kWh additional storage capacity can be easily and economically realised. On a clearly designed web interface the installed battery storage or the energy management system can be selected. The desired hot water temperature can be set with a rotary knob.


  • AC ELWA-E uses excess energy that can no longer be stored in the battery
  • Continuously adjustable regulation 0 - 3000W for maximum self-consumption
  • The AC ELWA-E communicates via Ethernet with the battery management system
  • Sinusoidal current consumption (no thyristor), compliant with TAB/TAEV
  • Guaranteed Hot water assurance
  • Suitable for numerous battery storage and smart home energy management systems

Technical data

Power 0-100 % linear, HF-switch mode
Heating power 0-3,000 W
Mains supply single phase, grounded plug, 230 V, 50-60 Hz
Control frequency based
Power cord 3 m
Standby-consumption <1.5 W
Efficiency >99 % at nominal power
Cos Phi 0.999 at nominal power
Operating temperature range 10°C to 40°C
Display 3 LEDs
Protection class IP21
Dimensions (lxhxd) 130 x 180 x 600 mm  including heating rod
Weight 2kg
Heating rod length 45 cm
Heating rod thread dimension 6/4 inch
Certification CE, TOR D1, TAEV, TAB
Warranty 2 years

AC ELWA-E Datahseet German

AC ELWA E Datasheet English

AC ELWA-E Manual German

AC ELWA-E Manual English

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