Turning old into new

A project by Technik Gebert

Ecology and innovation are the intrinsic drives of a doctor from the southern Hesse region. This is why the 23-year-old photovoltaic system has now been extensively upgraded, including a salidomo® 9 salt battery storage system, to become a self-sufficient stand-alone system in the event of a power failure.

In the first decade of the new millennium, it was still considered revolutionary and innovative to have a photovoltaic system installed on the roof of your own home. The forward-looking doctor was immediately on board. After 23 years, the small 2.3 kilowatt peak photovoltaic system was slowly getting on in years. The old, outdated photovoltaic inverter was disposed of and replaced with new, more powerful MPPTs. Additional solar modules were installed and a salidomo® 9 salt battery storage system from innovenergy® was purchased. A total of 7.3 kilowatt peak now flows as direct current directly onto the DC bus of the salt battery, from where it is fed into the battery or via the inverter into the domestic grid to the consumers. The surplus is fed into the public grid.

Thanks to the installation via MPPTs, i.e. without conventional photovoltaic inverters, this system is completely self-sufficient in the event of a power failure. This means that the solar power continues to flow, nothing is curtailed in the event of a power failure and the household continues to be supplied with its own electricity. The battery continues to be charged and also provides electricity overnight, of course only within the scope of its own electricity production. Additional electricity from the grid can therefore not be drawn and nothing more can be fed in until the public grid is fully available again.

The key experience was a film about the mining of raw materials for lithium-ion batteries. The doctor was so shocked by the environmental devastation in South America, the misery of people in Africa for the extraction of precious earths and the general overexploitation of raw materials by this entire industry that she began to research alternative storage methods. Her daughter, a biotechnologist, introduced her to the technology of salt batteries. So it did exist, the ecological and sustainable storage battery. She was also concerned about the fire risk of conventional storage batteries. Even though all statistics estimate this risk to be low, she did not want to be part of this low probability. The salt battery met her desired safety standards.

For years, the doctor from southern Hesse and many of her colleagues have been looking at ways to personally contribute to climate change. Prof. Daschner and his «Lebensretter/Klimaretter» movement for doctors have published a catalogue of measures on how to optimise your carbon footprint on a small scale. With his app, you can even actively participate and see how much you save every day. It starts with «drinking more tap water» and «cycling more often» through to «eating vegan». She has been living by these principles for years and passes this knowledge on to her patients. We are also happy to share the climate saver tool sponsored by the Federal Ministry for Economic Affairs and Climate Protection here:

«Anyone can do standard», says Daniel Gebert from Technik Gebert. He loves working out complex solutions or developing something special. Personalised advice is his top priority. He always keeps an eye on ecology and sustainability – for everything that has a plug.

Daniel Gebert 

Technik Gebert