Die vier Partner Enertrag, Vattenfall, Total und Deutsche Bahn wollen es beweisen: Die erneuerbaren Energien sind in der Mischung besonders stark. So lässt sich auch ihre Leistung besser planen. Das wollen die drei Energiekonzerne und die Bahn mit dem Wasserstoff-Hybridkraftwerk in Prenzlau in der Uckermark zeigen.
Das Projekt, in das die Partner 21 Millionen Euro investieren, ist eine Weltpremiere: Es bringt erstmals die Energiequellen Wind, Wasserstoff und Biogas in einem Verbund zusammen. Matthias Platzeck, Ministerpräsident des Landes Brandenburg, feierte das Projekt gar als “Quantensprung in der modernen Speichertechnologie”, als es Ende Oktober in Betrieb ging.
Das Kraftwerk in Prenzlau ist erst einmal ein Pilotprojekt, bei dem die beteiligten Konzerne viel praktische Erfahrungen sammeln wollen, um Wasserstoff-Hybridkraftwerke noch zu verbessern. Denn es soll nicht bei dem einen in der Uckermark bleiben. “Die Erfahrungen der Forschungs- und Entwicklungsanlage in Prenzlau wollen wir nutzen, um weitere Kraftwerke zu bauen”, so Werner Diwald, ENERTRAG Vorstand.
Dear Mr. Döring,
many thanks for your prompt answer. It was clear to me, that Prenzlau is a research power station only. The production of hydrogen for mobility seems to be its main purpose.
Nevertheless, for the REN energetics future, the most important problem to solve is energy storage. Most experts emphasize the maximum power in MW or energy in MWh/year,that the REN sources could supply in favorable conditions, but not many of them care, what could happen, if the conditions will turn to bad for a relatively short period of time.
In the end, for the energy consumers so as for the country economy, what is important is to have reliable energy supply, not depending on weather, daytime, or season of the year. Especially in our Czech republic conditions, where, except photovoltaics, the possibilities of REN sources e.g. of wind farms etc. are not very favorable.
Therefore I asked to have the lines ” Stationary gas storage, composed by 5 pressure vessels with a total storage capacity of 1.350 kg of hydrogen at the pressure of 31 bar (abs.)”, in the > http://www.ENERTRAG Hybridkraftwerk Broschüre Englisch_korrigiert vsp.doc < explained, and to receive standard technical data of the Prenzlau research power station, prepared by an expert technician. Sorry to say, neither this explanation nor the technical data are contained in your answer.
One other question more stands here: Why will the hydrogen be compressed after electrolysis, with corresponding heating and energy losses by its compression, when subsequently it is blended with the methane in the low-overpressure bio-gas storage? As it looks like, there is no problem in hydrogen production, but in its safe storage in bigger quantities, and this problem is not being solved in Prenzlau, I am afraid.
Yours Ivan Pergler
Dear Mr. Pergler,
thank you very much for your interest in our power plant. As this plant is a R&D-project, it is built to run at different modes of operation – base-load operation is one of them, hydrogen-production (mainly for the mobility-sector) and re-electrification through chp-usage of variable biogas/hydrogen-mixtures are others.
You are certainly right that the installed wind-capacity (6.9 MW) is significantly higher than the electrolysis-component (.5 MW). In the future, hybrid power plants will be larger in scale and composed of optimized components for specific purposes. In the R&D-phase however, we use industry-standard components to prove and test the modes mentioned above.
If you have further questions, please feel free to give me a call: +49 39854-6459-368
Best regards,
Robert Döring
Sehr geehrte Frau Anderson,dear Sirs,
as a member of the Czech Green Party and a former R&D power-electric Dipl. Engineer I am extremely interested in renewable energy sources and especially in energy storage possibilities. As energy storage is a crucial problem in most REN applications development, I welcomed the ENERTRAG groundbreaking action of the Prenzlau hybrid power station. Sorry to say, between many popular, non-professional journalistic references about this station I have not found any qualified information anywhere.
In the http://www.ENERTRAG Hybridkraftwerk Broschüre Englisch_korrigiert vsp.doc, there is a lot of questionable information, so as disproportion of the primary power of the wind turbines and the real energy storage capacity, if I understand well the document. It looks like if the power of wind, stored in hydrogen, should be a fraction only of the overall hybrid power station rated power. In an “insular” regime the station could operate for a few minutes on limited power, if there were no biogas back-up. The station looks to be practically a combined wind-and-biogas power station with a small additional hydrogen storage facility.
Is it not possible, that the ” Stationary gas storage, composed by 5 pressure vessels with a total storage capacity of 1.350 kg of hydrogen at a pressure of 31 bar (abs.)” is not correct in that report?
I hope, I am mistaken, and the problem is in the poor journalistic interpretation only. Therefore I am asking for a more professional information.
Ivan Pergler
Ing. Ivan Pergler 14700 Praha 4, Nad Údolím 21 tel. + 420 241 772 917 mobil +420 604 363 720 e-mail ivan.pergler@seznam.cz