As of March 2015, the total number of hydrogen refuelling stations in operation is 184. This is the result of the seventh annual assessment by H2stations.org, a website of Ludwig-Bölkow-Systemtechnik (LBST) and TÜV SÜD. Several countries are planning a targeted development of their hydrogen refuelling infrastructure. As a result, the number of publicly accessible stations will increase further.