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Home Storage Services - Transparency Template

CUGS Mogilno

The Cavern Underground Gas Storage [CUGS] Facility Mogilno is located in the territory of Kujawsko-Pomorskie Voivodeship, in the Mogilno and Żnin districts and the communes of Mogilno and Rogowo. It is situated within the Gniezno Lake District, which makes part of the eastern part of the Wielkopolska Lake District macroregion. The area is on the right-bank side of the Warta River basin. The absolute altitude above the sea level in the Gniezno Lake District ranges from 100 to 125 m

Information about the storage facility

First year of UGS operation: 1997

Working volume	580,92	[million m³]	6 471,4	[GWh]
Maximum injection capacity	9,6	[million m³/day]	106,9	[GWh/day]
Maximum withdrawal capacity	18,00¹⁾	[million m³/day]	200,5	[GWh/day]

¹⁾ Due to limitations on the part of the interconnected transmission system, the maximum gas withdrawal capacity from the CUGS has been reduced from 28.8 million m3/day to 18.0 million m³/day.

Information about the salt dome

Key parameters of the salt dome:

Dome size	3200×500	[m]
Dome height	6000	[m]
Cavern construction interval	600-1800	[m]
Number of caverns in operation	14
Number of caverns under construction	0

The CUGS Mogilno was developed within the Mogilno salt dome at the halite deposit Mogilno II and is situated in the N-E part of Łódź-Miechów Synclinorium dating back to the Mesozoic ‎Era. The synclinorium is buried between the underlying Variscan sediments of the Western European Platform and the overlying Cenozoic formations. The salt dome is formed by Zechstein halites which belong to 3 cyclothems: Stassfurt (older halites), Leine (younger halites), Aller (youngest halites). Considering that older halites are fine- and medium crystalline and contain little K-Mg salts, anhydrites and clay, they offer the best environment for cavern salt mining.

Geological section

przekroj-mogilno