Wallenstam AB and Midroc, Storage of Energy
“This can lead to a completely new, large-scale industry created around this area, i.e., hydrogen storage of surplus energy from wind and solar energy.”- Per Wassén, CEO of PowerCell Sweden AB
PowerCell Sweden AB (publ) in partnership with Wallenstam AB, Midroc Automation AB and Hydrogen Sweden to jointly launch a pilot study on developing a system where surplus energy from wind and solar energy can be temporarily stored as hydrogen which then together with fuel cells provides electricity on cloudy and windless days. The purpose of the study is that it will lead to a joint demonstration project in 2016 next to PowerCell’s premises in Gothenburg, Sweden. The Västra Götalandsregionen finances the feasibility study.
The electricity solar cells/windmills generates satisfies the continuous demand for electricity, and of the excess energy hydrogen is produced via electrolysis stored in the tank. The hydrogen can then be used in a fuel cell to generate new electricity and heat when needed. In the transition from fossil to renewable energy, the need for a flexible electricity network increases, where storage is a natural part of being able to balance the electricity grid. Especially now that nuclear power begins to be phased out. This is because renewable energy sources like solar and wind produce electricity in a non-controllable way. Since hydrogen can be produced in a renewable way, from water and electricity, it is natural to connect the grid with the production of hydrogen. For this to be done in a way that reduces the load on the electricity grid the system needs to be optimized for both hydrogen needs and the electricity grid perspective.
PowerCell will, along with the Hydrogen Sweden; property manager and wind farm owner Wallenstam AB and Midroc Automation AB, a part of Midroc Europe Group, a comprehensive partner in the areas of real estate, construction, industry and environment, now begin a feasibility study to develop a system where excess energy from wind and solar power can be temporarily stored as hydrogen which then together with PowerCell’s fuel cells provide electricity and heat in cloudy and windless days.
In the transformation “byproducts” occurs in the form of heat and oxygen that is possible to take advantage of. The heating is in a temperature range suitable for the district heating system and heating of premises. The oxygen is very clean and has a high value if the right customer (e.g. hospitals) and a distribution method can be found. Hydrogen that is not needed into the grid can be sold as vehicle fuel and then has a higher market value than electricity into the grid on windy and sunny days.