Germany, Patrizia-Gasunie settlement to retailer hydrogen in salt caverns | EUROtoday

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Underground caverns in Lower Saxony – already large-scale oil and fuel storage – will even change into hydrogen storage. Patrizia SE and Storag Etzel (an working firm wholly managed by Patrizia) have signed, with the Dutch power infrastructure firm Gasunie, a lease with choice for the event of hydrogen storage caverns within the Etzel cavern plant, in Lower Saxony. Under the settlement, Storag Etzel – which has been working oil and fuel storage amenities in underground caverns for greater than 50 years – will develop the identical storage modality for hydrogen storage.

The settlement consists of an choice for the storage of over 1 TWh of hydrogen (which is the same as 1,000 million kilowatt hours and offers sizzling water and warmth to 100 thousand common households per yr). The “H2CAST Etzel” hydrogen storage pilot venture, carried out by Storag Etzel, Gasunie and different companions from 2022/2023, is predicted to show the feasibility of hydrogen storage in Etzel's underground caverns.

The pilot venture

The hydrogen storage pilot venture referred to as “H2CAST Etzel” consists of the conversion of two caverns into hydrogen storage caverns, the development of an above-ground facility and a subsequent testing and analysis part which can be accomplished by the top of 2026. The pilot venture is financed by the German federal authorities and the state authorities of Lower Saxony with an funding overlaying greater than a 3rd of the whole prices of the pilot check.

The goal of the pilot check is to show the feasibility of high-volume hydrogen storage in underground caverns with an industrial-scale storage quantity. The check can be carried out below real-world circumstances, together with hydrogen injection and withdrawal in multi-cyclic operation mode, hydrogen fuel purification and storage facility integrity testing.

Currently, the salt dome consists of 75 working caverns that as we speak retailer 3.9 billion cubic meters of pure fuel and might retailer one other 10 million cubic meters of crude oil. The Etzel underground facility might be expanded to 99 already accepted caverns, which represents a further capability of 24 caverns with the equal of roughly 5 TWhH2. Due to the decrease calorific worth of H2, the storage quantity required for hydrogen is 4 instances greater than that of pure fuel.