Hydrogen for a sustainable energy supply

Hydrogen can play an important role in the transition to a sustainable energy supply. At present, grey hydrogen is mainly produced by burning natural gas and blue hydrogen when CO2 is captured in that process. But when it comes to green hydrogen, which is produced entirely from the sun and wind, there are still technological barriers to be overcome. TNO works on innovations for the production, transport and storage of hydrogen and applications such as fuel cells and gas turbines in order to accelerate the energy transition.

Ten things you need to know about hydrogen

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Hydrogen as CO2-free energy carrier

Our country can even play a pioneering role in the development of components for the new generation of electrolysers. These devices use electricity to split water into hydrogen and oxygen. When that electricity is generated by the sun or wind, it is CO2-free, green hydrogen. The current generation of electrolysers still does not provide enough power to play an important role in the energy transition, and it is hardly profitable. Together with companies in the manufacturing industry, TNO is working on electrolysers with a significantly higher power output, a longer life span and lower costs. In addition, together with partners at home and abroad, we have started to design the green hydrogen power plant of the future, which will be able to produce considerably more sustainable hydrogen at a third of its current cost.

Reliable and inexpensive components

The Netherlands can become an important supplier of components to electrolyser manufacturers, and by working with these companies on robust, reliable and cheaper parts, our country can acquire a key position in this global growth market. Cooperation between research institutes, manufacturers and end users is necessary in order to build and scale up pilot plants.

Hydrogen from natural gas with carbon

Methane pyrolysis can greatly accelerate large-scale deployment of emission-free hydrogen. Sustainable electricity can also be used for the required energy. The total CO2 emissions are therefore zero. In addition, significantly less energy is required per hydrogen molecule than with steam methane reforming or with electrolysis of water. It is affordable and commercially applicable within a few years. Methane pyrolysis produces hydrogen from natural gas with carbon - and not CO2 - as a valuable by-product. With this technology, methane is split at high temperature in a molten metal alloy into hydrogen and pure carbon. The reaction takes place in a bath of about 900 degrees Celsius with molten metal. Natural gas flies out at the top and solid carbon comes to the surface. However, emissions can be greatly reduced and even neutralized. TNO is working on refining the process to produce pure carbon and is going to build a pilot installation after which the commercial application will follow. Scaling up the technology is not complicated and can be modularly built and expanded in factories.

Hydrogen as raw material and fuel

The current grey hydrogen is now produced and used in industry to serve mainly as a raw material for ammonia and fertiliser, among other things. In the future, green hydrogen as a fuel can be an alternative to natural gas in production processes and to high-temperature heat in industry. The use of hydrogen as a fuel for vehicles is still limited. For longer distances and heavier transport, safe, compact tanks are needed to store hydrogen in a truck, an inland and seagoing vessel and possibly even an aircraft. TNO is investigating which materials are suitable for storing hydrogen at extremely low temperatures or at high pressure in a liquid state.

HYDROGEN AND THE FUEL CELL

In the mobility domain, TNO concentrates on solutions for the design, deployment, and operation of clean drive systems for vehicles powered by hydrogen fuel cells and hydrogen combustion engines. TNO offers algorithms for state estimation of hydrogen fuel cells, and model-based calibration and validation of optimal drivetrain configurations. TNO’s flex-fuel combustion concept for sustainable fuels, including hydrogen, enables high fuel efficiency, low pollutant and greenhouse gas emissions. The TNO powertrain test centre facilitates performance assessment and validation of sustainable and hybrid technologies.
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Unique infrastructure

Offshore wind farms are increasingly producing more electricity than the current electricity grid can handle. Converting electricity into hydrogen and transporting hydrogen through part of the existing gas grid is an alternative to upgrading the electricity grid. The natural gas pipelines can be made suitable for hydrogen with relatively minor interventions. Thanks to this unique infrastructure, the Netherlands is well prepared for this.

Underground storage

An advantage of hydrogen is that it can be transported and stored relatively cheaply on a large scale. Storage is possible, for example, in underground salt caverns. TNO is also investigating the opportunities and challenges for storage in depleted gas fields. Underground storage of hydrogen is very suitable for bridging longer periods (days to months) in which there is a difference between supply and demand for electricity or heat. The Netherlands, for example, has a strong difference in the demand for heat in summer and winter. The supply of electricity from the sun and wind is also highly dependent on the weather and the seasons. With hydrogen as an energy carrier, periods of surpluses and shortages of energy from wind or sun can be compensated so that the energy system remains in balance.

System questions

Technically, wherever natural gas is currently used, it can be replaced by green hydrogen gas. But economically and socially, this is certainly not the best option in all cases. For example, for the built environment it is often more efficient to use sustainable soil heat or a heat pump, or a combination of the two. It is important to assess this at system level.

Hydrogen is therefore more than a technological issue. It affects not only our energy system, but also has economic, legal and other social implications, with many different interests having to be considered. TNO combines in-depth knowledge of technologies, markets, revenue models and legislation to help parties make the right choices. Our active involvement in numerous projects at home and abroad provides us with a comprehensive overview of all the issues relating to hydrogen.

Knowledge

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News

Starting signal for design of gigawatt electrolysis plant

21 March 2019
There is still a lot to be done to supply Dutch industry with sustainable hydrogen, an important step in the energy transition. Sustainable hydrogen can be produced by the electrolysis of water, using... Read more
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New insights on offshore energy transition combining offshore wind and gas

06 February 2019
The second phase of North Sea Energy program reports on the role of offshore platform electrification for cleaner production of natural gas as a stepping stone for offshore power-to-hydrogen and CO2 storage.... Read more
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Port of Rotterdam sees opportunities for Power to Hydrogen

20 October 2017
In 2030 additional wind turbines on the North Sea will result in some 70 gigawatt of installed generation capacity, some 12 gigawatt of which will be available to the Netherlands. This is such a significant... Read more

Towards CO2 neutral fuels and feedstock
Contact

Lennart van der Burg MSc

  • Hydrogen Expert
  • Electrolyse
  • Heat networks
  • Energy Transition
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