How BlueGEN works

The BlueGEN is a compact micro CHP unit that is installed in residential and commercial buildings in addition to an existing heating system. The following diagram shows a typical configuration for a BlueGEN installation:




The BlueGEN is monitored around the clock over the Internet and maintenance is carried out remotely if necessary. You can use the customer portal BlueGEN-net to enter current and recorded operating data from the system.

The connection to the (natural) gas network ensures a continuous supply for uninterrupted operation. At the present time it is not possible to operate it with gas from a tank.

The BlueGEN is connected to the power grid permanently and automatically feeds in excess electricity that is not needed on the spot. The electricity that is fed in is remunerated so that BlueGEN also runs economically even when local requirements are temporarily low. If local requirements exceed the output BlueGEN produces, additional electricity from the network is supplied automatically.

Waste heat is released via a heat exchanger and conveyed to a hot water tank. This means the BlueGEN supplies up to 200 litres of domestic hot water every day and thus relieves the load on the heating system for supplying hot water.

Additional heat requirements, for central heating in cold winter months for example, are supplied by an external peak load boiler. This can be an existing heating system or an entirely new installation. As the connection to the heating circuit is via the hot water tank, BlueGEN offers maximum flexibility here: whichever type of heating you use, the BlueGEN can be combined with almost any system without much outlay.



BlueGEN technology

The BlueGEN relies on ultramodern, innovative fuel cell technology in order to generate power and heat with maximum efficiency right where they are consumed – in your business, in your home and anywhere that extremely efficient electricity is needed.


But what exactly is a fuel cell?

To put it simply, a fuel cell is a small multi-layered membrane that can convert hydrogen-rich fuel cells into electricity by means of an electrochemical reaction. The fuel cell consists of an anode, a cathode and an electrolyte as depicted in the following diagram:


A single fuel cell supplies only a low amount of energy, which is why a so-called fuel cell stack is used in systems like the BlueGEN. A number of fuel cells are stacked on top of each other using carrier plates and in this way together generate sufficient energy for use in residential and commercial buildings.



How exactly do fuel cells work?

A fuel cell uses an electrochemical reaction in order to generate energy from suitable fuels. In the case of BlueGEN, conventional natural gas is broken down in an internal process into its constituent parts and the hydrogen it contains is used to generate energy. The fuel cell is charged on the cathode side with oxygen from the air while hydrogen is applied on the anode side. Due to the special material properties of the fuel cells, the oxygen penetrates the electrolyte’s membrane in order to interact with the hydrogen on the other side. Ultimately an electrical current is generated between the anode and cathode in this process.



What benefits does the fuel cell offer?



Maximum electrical efficiency

BlueGEN clearly produces more energy from the same amount of natural gas and other technologies. That protects the environment and is good for your wallet.

Quiet and without vibrations

Fuel cells run without moving parts. The BlueGEN therefore runs very quietly and without vibrating.

Long service life and low-maintenance

There is also no mechanical wear because no moving parts are used. This means the outlay for maintenance is considerably lower when compared with engine-driven systems, for example.

Learn how you can benefit from BlueGEN:   

For businesses

For private households

For installers

For utilities/ESCOs

Get in touch
Download Brochure