Representation of white spots
The following visualization shows the energy infrastucture in a future energy system based on hydrogen and (renewable) gas:
Description of white spots
Although several projects in Germany and Austria already deal and dealt with the topic of H2 supply, there are still open questions concerning the ratio of gas components on the one hand and concerning quality on the other hand; also relating to gas utilization after feed-in. The ÖVGW constantly works on investigations of these topics. These open questions are particularly covered in an appropriate project submission. In terms of feed-out of H2 the projects Hyly Pure and Underground Sun Storage are to be mentioned. Since transportation of hydrogen within existing natural gas pipelines is an option, projects dealing with this topic can be submitted as well. At least the results of the named projects need to be discussed explicitly.
Looking at the transformation of the energy system, the utilisation of existing infrastructure is an important component that is inherent in the system. Projects that emphasize the optimized utilization of pipeline and storage infrastructure (within the context of green hydrogen or resultant hydrocarbons) can be submitted as Show Case for existing technologies as well.
Methanisation can play an important role for application scenarios in terms of using the existing gas distribution system. Currently two projects (Renewable Gasfield, Underground Sun Conversion) cover this topic in the scope of the flagship region. Since there are different technologies for methanization, more projects can be submitted as long as they can show that significant improvements (for different target parameters) of the existing methods are possible.
Green hydrogen based on electrolysis can be used for active bridging technology. Firstly this process path offers the possibility to relieve capacity of the power grid as well as long term storage of excess engery, by transporting and storing green hydrogen (optional SNH) in the gas system. On the other hand electrical power can be utilized for new fields and applications in the energy and mobility system, gas system, district heating and industrial processes. That way these processes and technologies support an increased integration of different subfields of the energy system in terms of utilization and transfer.
Development projects with focus on bridging of fields should refer back to results of existing projects of the flag ship region (like wind2hydrogen).
Additional to hydrogen production via electrolysis other possibilities can be taken into account; however, CO2 neutrality is a requirement. This means, biomass can be used, since it is classified as CO2 neutral.
Producing electrical energy and subsequently green hydrogen through wind, water or solar power leads to peak loads in electricity and H2 production. These peaks need to be buffered with continuous storage. Besides storage as hydrogen or methan, ammoniak (and other hydrocarbons) offer storage possibilities. Hydrogen storage in metal hydrides is an appropriate option as well. One of these innovative storage options should be targeted in the project.
Electric vehicles with hydrogen based fuel cell systems allow large driving ranges, fast refuelling, good driving performance and high value in use. The challenge is to develop more efficient, more durable and cheaper fuel cell systems with improved dynamic behavior and low noise emissions.
The only way to represent electrified heavy-duty vehicles is to use fuel cell systems with high efficiency in use that can therefor be utilized economically viable. This concerns all fields of heavy-duty traffic on streets, rails and water, as well as special-purpose vehicles for building and mining industry, airport-apron or other. These applications require the development of highly robust and durable fuel cell systems.
This topic covers demonstration projects that use CO2free/neutral fuels.
Within this scope demonstration projects with according business models for taxi and bus fleets shall be implemented. Existing process chains of the public transportation system should be regarded.
Hydrogen is already part of numerous industrial processes (often gained by steam reformation). Projects that apply green hydrogen need to have demonstration character and should include according business models.
Carbon can be bound with hydrogen and should show at least one-time reutilization (with an CO2 reduction of at least 50%). The overall target is to create a carbon recycling economy.
Based on hydrogen completely new procedures for industrial processes can be developed. The project SuSteel can be mention as an example.