Single-family house – Brandstötter

Pioneer for solar-electric hot water: ELWA in operation for hot water preparation since 2014.

Facts about the project

Client/owner/planner
PV system
System
Hot water backup
Hot water demand
Referenz_ELWA_Brandstoetter_433x260px my-PV

Customer declaration:

Since 2014, the ELWA has been in operation, paired with a 2.25 kWp PV system. The installation took place in a 1,000-litre buffer storage with a fresh water station. While we usually do not utilize the optional hot water backup with mains power, this feature proved to be useful during a renovation phase in unfavourable weather conditions.

What initially appealed to me about the ELWA was the simple installation. Now, I appreciate that this solution is not only easy to install but also entirely maintenance-free. I have also acquired the USB interface from my-PV, allowing me to retrieve data and monitor both the PV thermal yield as well as the temperature profile.

On days with fluctuating weather conditions, when I inquire about my neighbour’s thermal solar system and whether it has delivered any results, he often denies it. In the meantime, my ELWA consistently generates 4 kWh of heat, even on overcast weather. It's truly a brilliant solution!

Product details ELWA:

  • 0 – 2,000 W infinitely adjustable

  • Target temperature adjustable with rotary knob

  • Works even during power outages

  • For hot water storage tanks ranging from 100 – 1,000 liters

  • Self-consumption: 2 W

  • Efficiency: >99% at rated power

  • Optional hot water provision: 750 W

Referenz ELWA Brandstötter my-PV

With the data interface "USB Interface" and the free ELWA software, the yield data can be easily monitored.

Screenshot Webinterface_ELWA_EN my-PV

An integrated data logger allows, among other things, the visualization of the achieved solar yields and the temperature profile.

Weitere Referenzprojekte

A backup for the heat pump

After experiencing three failures of their heat pump, the owners of a single-family home installed a PV heating element.

Read more...

Farmhouse in Lower Saxony heats hot water with photovoltaic electricity

Despite battery storage, enough surplus remains at the 100-year-old farmhouse, used as photovoltaic heat to boost self-consu

Read more...

Hot water from PV electricity instead of gas for football club

Using surplus photovoltaic electricity from the roof for hot water production at ATSV Neuzeug

Read more...

Masonry stove and photovoltaic heat instead of a heat pump

The newly built single-family home impresses with environmentally friendly construction and innovative heating technology.

Read more...

,

my-PV device trio achieves 98% PV self-consumption

By incorporating one AC ELWA 2 and two AC ELWA-E, a homeowner in Estonia achieved an impressive 98% of PV self-consumption.

Read more...

A Single-Family House with system openness

Maximizing photovoltaic power in combination: This renovated house exemplifies the effectiveness of my-PV's system openness.

Read more...