E-heat is the future

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Electric heating with photovoltaic

The dream of a homeowner or entrepreneur: complete self-sufficiency from the energy provider.

Thanks to falling prices for photovoltaic systems, the latest developments in the storage market and particularly energy-efficient construction methods, this scenario is becoming increasingly likely. In addition, the guaranteed feed-in tariffs for self-generated solar energy are steadily decreasing and will disappear altogether in the not too distant future. Both of these factors, together with rising electricity prices, make it particularly efficient to operate one’s own solar system if the electricity generated is also consumed by the company itself.

Arguments for the combination

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What matters in the end

In the future, therefore, the insulation and thus the energy efficiency values of a house will be important on the one hand. And secondly, to have enough electrical devices that consume the electricity generated. As well as storage facilities that allow electricity to be called upon when it is needed. In a private household, mostly in the evening and in winter – at times when the sun is not shining.

Technological development is aimed precisely at this: Low-energy and passive houses reduce the overall energy demand, and sophisticated, affordable storage systems are already storing solar power generated during the day. In addition, more and more consumer appliances can be controlled digitally – via an app, even while on the move – so that they consume electricity when it is actually generated.

This is where our electric panel storage heaters come in. Thanks to their
firebrick, they are particularly efficient and reheat even without electricity once they reach the set temperature. And with our controller technology, you control all radiators smartly via app from anywhere.

Thermotec AG - Photovoltaics - Thermotec AG Aeroflow Hotel 2021 by Paul Glaser 082 7 9

The advantages of photovoltaics


Independence from politically and naturally limited fossil fuel availability and rising prices.

Storage option

Improved options for storing the solar power generated and thus holding it until consumption.


Electricity generated with photovoltaics does not bring dirt and odors into the house as with fossil fuels.

Less energy consumption

More and more new buildings are being constructed as low or passive energy houses. However, old buildings can also be renovated in such a way that they comply with energy requirements.


Improved options for storing the solar power generated and thus holding it until consumption.


Self-use of self-generated solar power instead of feeding it into the public grid at low compensation rates. A high degree of self-sufficiency can thus be achieved through intermediate storage of the solar power.

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Photovoltaic modules
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Thermotec AG - Photovoltaics - Group 15254
Energy storage
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Surface storage heating with digital control
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Other electrical consumers

The overall concept is decisive

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Plan with tomorrow's possibilities

Many important steps towards self-sufficient energy supply have already been taken. But much is also still under development. That’s why it’s important to think about tomorrow’s possibilities when planning today.

Buildings that are still heated with oil or gas today, for example, can be supplemented with electric heating in the short term and completely converted in the long term. But even today you can supply heat to an entire building exclusively with electric heaters via a photovoltaic system. Below are a few key data:

  • a house with average insulation and approx. 100 m² requires approx. 6,500 kWh per year with our AeroFlow electric radiators
  • a conventional PV system with 10 kWp is sufficient for this purpose
  • for a 10 kWp solar system you need about 100 m² roof area

Due to the extremely increased prices for gas and oil, there are hardly any serious differences to heating with electricity. You can additionally minimize your costs through feed-in tariffs, the savings of a classic heating system for oil or gas as well as the missing maintenance costs like chimney sweep or wearing parts in the heating system. Furthermore, optimized heating behavior and good building insulation can further reduce costs.

Thermotec AG - Photovoltaics - Thermotec AG Aeroflow Hotel 2021 by Paul Glaser 082 7 10
Thermotec AG - Photovoltaics - Frame 494
Thermotec AG - Photovoltaics - Group 15130
Made in Germany. Made by Thermotec.

Electric heaters of the latest generation

All Thermotec electric heaters can be easily combined with a photovoltaic system.

Use solar energy to bring the warmth into your home!

The future looks like this

Solar cells are no longer only found in classic PV modules on the roof, but also on window panes and in masonry.

Electricity storage systems are becoming larger and cheaper and will be installed with every PV system in the future

Prices for solar cells continue to fall

There will be even more low and passive energy houses

Electric heaters become more efficient and act as storage themselves

Oil and gas become more expensive and are only used in combination with electricity

E-heat is the future

The self-sufficient photovoltaic-powered heating system consists of a combination of surface storage heaters with other innovative heating methods. Developing visions for the future is a big part of Thermotec’s philosophy.