Most people understand the topic of "energy turnaround" as the use of sun and wind to generate electricity. However, in order to achieve the energy turnaround, the switch to renewable energies must be successful in all sectors. Sector coupling is when renewable electricity can also be used in other sectors.
Therefore, sector coupling means networking the three sectors of the energy industry (mobility, heat supply and electricity).
As the sectors are still largely separate from each other today, it is all the more important to have an exchange of sectors. Sector coupling is thus considered one of the focus strategies of the energy turnaround.
There are different technologies to successfully implement the sector coupling. Power-to-gas is one of the most important technologies. The electrical energy is converted into hydrogen. This energy is then stored on a medium- and long-term basis and can be used in a variety of ways.
The first mega-class PEM electrolyser with innovative power-to-gas technology
The company Gp Joule presents the first PEM electrolyser based on power-to-gas technology. It is shown how wind or solar energy can be converted into hydrogen and stored, almost without losses. The incidental heat generated by the process is removed using a heat exchanger, so that the production of green hydrogen becomes highly efficient. This can then be fed into heat sinks available on site for remote or local heat applications.
The hydrogen produced is versatile and so can be used in industry, research, and as fuel for mobility. In transport, electromobility comes up against limits in range. Here, above all, the hydrogen can serve as a green fuel. Particularly in the public transport of people and long-haul road transport, hydrogen is an unavoidable alternative for a climate-friendly mobility sector. Consequently, in the near future, wind farm operators will increase their value chain and new revenue potential can be generated in new markets.
Together with municipalities from all over Germany, GP JOULE has developed climate-neutral heat utilisation concepts for the heating sector to ensure a cost stable and secure supply. In addition to concepts for the use of process heat when using power-to-gas, the focus here is on the use of heat from local biogas plants.
Into the future with hydrogen
"From 2020 onwards, only cars equipped with environmentally friendly drive systems will be allowed to be registered," which means that all other combustion engines will have to be replaced by hydrogen and hybrid technology. This is the demand of CSU Secretary General Markus Söder.
Based on the lively energy and environmental debate, the focus is increasingly on the fuel of the future. Hydrogen is thus becoming more and more a long-running topic. The German Federal Government has already launched a national innovation programme to promote hydrogen and fuel cell development. After the failure of hybrid technology, automotive companies are coming under increasing pressure not to also miss out on fuel cell technology.
Hydrogen can be produced with the help of renewable energy sources and no harmful emissions are produced in the process. This is particularly attractive from the point of view of energy and environmental policy.
For the first time, H-TEC SYSTEMS, a company based in Lübeck, Germany, is presenting megawatt class hydrogen PEM electrolysers as well as the heart of every PEM electrolyser - the electrolysis stacks. Already today, hydrogen can be produced cost-effectively with these technologies.
The electrolysers can be used to convert electricity into hydrogen at low cost. Its usage is very diverse, so hydrogen can be made available in markets such as industry, mobility, refinery supply, methanisation, feeding into the gas network or for the return of electricity.
H-tec Systems strives to continuously reduce technology and transformation costs, so that the electrolysers of H-tec Systems achieve an efficiency of approximately 75 per cent when converting electricity into hydrogen. This is achieved through consistent mass production suitability, component durability, low power-to-weight ratio and high conversion efficiency.
In the near future, the specific costs of converting electricity into hydrogen can be reduced to up to 2 cents per kWh
H-TEC SYSTEMS is a research and production company of the GP JOULE Group based in Lübeck. The company has been working on innovative products in the hydrogen sector since 1997 and now offers customers H-TEC Series-S stacks and H-TEC Series-ME electrolysers. In 2010, GP JOULE integrated H-TEC SYSTEMS as a subsidiary into the company in order to move from the development of innovative technologies to intelligent, comprehensive system integration.
Whether it be solar, wind or biogas, GP JOULE stands by its partners throughout each project, from the initial concept to the safe production of clean energy. GP JOULE also helps maintain operating plants by offering a wide range of professional services. GP JOULE is committed to innovation and continues to invest in new technologies, and the development of holistic and integrated solutions for communities.