The discovery of the dynamo-electric principle has brought about greater changes to the way our society lives than practically any other scientific breakthrough. By inventing the dynamo machine, not only did Werner von Siemens help bring about the advent of electrical machinery, he was also instrumental in accelerating and facilitating industrial processes. Seen from the perspective of society, this completely changed accepted concepts of time and mobility.
In May 2014 Siemens, together with the public utilities of Mainz, Linde and the RheinMain University of Applied Sciences, has laid the foundation stone for a new type of energy storage system. Now, time has come: By pressing a symbolic button, the Chairman of the Board of Linde Group, Dr. Wolfgang Büchele, Siemens board member Professor Siegfried Russwurm, two board members of Stadtwerke Mainz AG, Detlev Höhne and Dr. Tobias Brosze, and Professor Dr. Detlev Reymann, President of RheinMain University, officially launched a hydrogen production plant at the Energiepark Mainz on July 2, 2015. With the support of the German Federal Ministry of Economics and Technology as part of the Energy Storage Funding Initiative the 17-million-project could be realized. The system, equipped with an electrolyzer from Siemens, will convert surplus electricity from wind farms to hydrogen from now on. In this way, it will be possible to store electricity from renewable sources over longer periods of time. With a peak rating of up to 6 megawatts the plant is the largest of its kind in the world.
The principle of electrolysis has been tried and tested for decades. What is special about the Mainz system is that it involves highly dynamic PEM high-pressure electrolysis which is particularly suitable for high current density and can react within milliseconds to sharp increases in power generation from wind and solar sources. In this electrolyzer a proton exchange membrane (PEM) separates the two electrodes at which oxygen and hydrogen are formed. On the front and back of the membrane are precious-metal electrodes that are connected to the positive and negative poles of the voltage source. This is where the water is split. The system in Mainz will thus have a capacity relevant for bottlenecks in the grid and small wind farms.
On the first day of Hannover Messe, April 25, Klaus Helmrich welcomed you to the yearly Siemens press conference. As member of the Managing Board of Siemens AG, Klaus Helmrich is responsible for the Divisions Digital Factory as well as Process Industries and Drives. The press conference took place at 6:30 PM, in room 1 of the fair's Convention Center.
Together with Munich Mayor Christian Ude, Siemens President and CEO Peter Löscher has laid the foundation stone for the company's new headquarters building, which will be completed on Wittelsbacherplatz in Munich by the end of 2015. The future inner-city complex will provide employees with a 21st-century working environment and be freely accessible to the general public at ground level. Siemens has set the highest standards for sustainability for its new headquarters, and will fulfill the criteria for minimum energy consumptions in buildings.