COR.stor now available — see what it can do for you. 5 + 5 years’ battery warranty. Up to 2.2 kW of your own winter power while heating.
Country house with a modern extension, rain and mist over the surrounding landscape

Engineered Freigeist.®

Generate heat and your own winter power from wood pellets. Store your own energy. Generate, store and use more of your own energy, and buy in less.

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Freedom you generate yourself.

From consuming energy to generating it.

A building used to be a place where energy arrives and is consumed. It can just as well be the place where it is generated.

Freigeist means having more say over your own energy. COR.set generates heat and your own power, especially in winter when electricity is expensive. COR.stor stores your own energy for later. The COR Platform connects everything into one system, so you generate and use more yourself and have more control over your energy costs.

  • The building generates energy.
  • It stores energy.
  • It uses energy when it is needed.
Further readingThe COR System

Three products. One system.

  • COR.set: the COR.gen heat and power plant next to the COR.stor storage unit with five battery packs

    COR.set

    Available

    Generate heat and power. Store energy.

  • COR logo on the dark corrugated wall of the COR.tainer

    COR.tainer

    In development

    The complete COR System in a container.

What could your home save?

The calculator simulates your building for a full year in 15-minute steps, using the weather data for your region: heating, electricity demand, photovoltaics and storage. You see the result straight away, and can also download it as a PDF.

35,040

quarter-hours simulated per year

9

weather locations across Austria

5

heating types compared

Energy when it matters most.

In winter, heat demand rises while photovoltaics deliver less. That is exactly when the heat and power plant in COR.set generates up to 2.2 kW of your own power while heating. Heat demand becomes a source of your own winter power, and you need to buy in less, or even none, of that expensive winter electricity.

Snow driving past a window, with a cup of tea and a wool blanket on the sill inside

Engineering you can see for yourself.

4

granted patents

Two more are pending.

92.5%

Overall efficiency, standard test

COR.gen, based on net calorific value, direct method.

70 kWh

usable

expandable to 210 kWh

up to 2.2 kW

power in COR.set

while heating

Engineered in Austria.

System architecture, combustion, integration and software.

This is COR in practice.

A completed installation, commissioned in 2026: three COR.stor units and three inverters, run together as one system.

Plant room of a completed COR.stor installation: three battery racks with five packs each, three hybrid inverters mounted above them, control cabinet alongside
Photograph of a completed installation, July 2026. Image editing: room brightened and cleaned up, equipment unchanged.

Your energy is your freedom.

Generate more yourself. Store more yourself. Use more yourself. That way you decide for yourself how you use your energy — when you use it and how little you need to buy in.

Engineered Freigeist.®