Faits sur le projet
- PV power
- Type of building
- Heat storage size
- my-PV product in use:
- System control by:
A heat pump for heating and hot water has been in operation in our two-family house since 2001. Since 2009 we have also been generating our own electricity from a photovoltaic system with 10 kWp. Of the approximately 10,000 kWh of electricity that the system generates annually, around two-thirds were fed into the public power grid until AC ELWA-E was purchased, which means that we were able to use a maximum of one third of it ourselves in the house. Since the commissioning of AC ELWA-E, this value has decreased to less than a quarter! So we use about 75% of the photovoltaic electricity ourselves, for heating purposes and for household consumers. We use the excess electricity to preheat the 1,000 litre buffer tank. To maximize self-consumption, AC ELWA-E was installed at the bottom, this means at the coldest point.
The linear power modulation of my-PV has the advantage over the heat pump that even the smallest excess yield can be compensated for quickly and very precisely. In line with the increase in self-consumption of photovoltaic electricity, we were able to significantly reduce the electricity consumption from the grid.
Since January 2021, we have also kept a very close eye on device performance. In addition, system access is now also possible for us from outside the home network! This has been a wish of mine for a very long time. We are all the happier that this is possible with an innovative product from the surrounding region.
Opinion personnelle du client et résumé
"Since January 2021, we have also kept a very close eye on device performance. In addition, system access is now also possible for us from outside the home network! This has been a wish of mine for a very long time."
AC ELWA 2 in use
Make the most of solar energy and increased self-consumption
To maximize the self-consumption of your current PV system, AC ELWA 2 harnesses the system's surplus photovoltaic energy to heat your water. Increasing self-sufficiency simultaneously safeguards against unpredictable or rising operating costs.More infos about AC ELWA 2
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