INFOGRAFICA INTERATTIVA Stoccaggio gas, Italia sale a 60,90%, media Ue a 61%

Manometers to measure pressure are seen inside the heat pump plant run by energy company Wien Energie in the Simmering district of Vienna, Austria on March 14, 2024. In a large hall on the outskirts of Vienna, shiny pipes carry treated wastewater through three giant heat pumps, part of Austria's drive to reduce carbon emissions and its dependence on Russian gas, with more and more European cities eyeing this alternative. The plant -- billed as Europe's most powerful one -- is churning out district heat to up to 56,000 Vienna households, with operator Wien Energie planning to double its capacity to 112,000 households by 2027. (Photo by Vianey Lorin / AFP)