By P Gosselin
An article on NDR German public broadcasting clearly conveys the dimensions of hydrogen. It reports on a planned factory for green hydrogen in Neumünster.
A hydrogen factory with an output of 50 megawatts corresponds to the output of ten wind turbines, which means that the output of ten wind turbines can be stored. A hydrogen factory of this size could produce 3,000 tons of green hydrogen with an energy content of 100 gigawatt hours, says Prof. Oliver Opel from the West Coast University of Applied Sciences (FHW) in Heide. If the green hydrogen were burned, it could be used to heat 5,000 single-family homes per year. And the waste heat could be used to heat a further 2,500 houses, according to Opel. If electricity is made from the green hydrogen again and heat pumps are used, 7,500 single-family homes could be heated, as well as another 7,500 homes with the waste heat.”
To put this into perspective: Schleswig-Holstein has around 650,000 single-family homes, 80,000 two-family homes and 95,000 multi-family homes. It is in any case no surprise that high German electricity prices are an obstacle.
Prof. Oliver Opel heads the Institute for the Transformation of the Energy System, ITE, at the West Coast University of Applied Sciences in Heide. He says that the construction and operation of electrolysis plants are still too expensive. One crucial aspect is the high price of electricity. Opel explains: ‘In other European countries, the electricity price is much better. One option could be a division according to geographically different electricity price zones, as already exists in other countries.’
Opel also points to another problem: ‘The purchase prices for electrolysis systems have continued to rise, as they are nowhere near mass production.’”
The question of what the hydrogen and the electricity generated in this way will ultimately cost remains unanswered in the article. In any case, the country’s plans are ambitious. It would be a factor of 30 of the first project.
Schleswig-Holstein wants to achieve an electrolysis capacity of 1.5 gigawatts (1,500 megawatts) by 2030, according to the state government’s updated hydrogen strategy. The federal government has also set itself a target. By 2030, the government wants to achieve an electrolysis capacity of 10 gigawatts (10,000 megawatts) to cover the demand of 95 to 130 terawatt hours of electricity per year.
And according to the energy expert at the West Coast University of Applied Sciences, Oliver Opel, this is a real challenge, precisely because of the current poor framework conditions.”
So the road is not only long, but also expensive.
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