Commenting on the start of drilling, Michael Pollmann, State Councillor, said: "Deep geothermal energy holds considerable potential for decarbonizing the heat supply." The pilot project in Wilhelmsburg is thus an important step towards phasing out coal in Hamburg. Although deep drilling "always holds a residual risk with regard to the discovery", based on the indications, "we are confident that the project will be successful." Drilling is expected to be completed by next August. The planned geothermal plant will then extract energy from the thermal water at the surface before returning it to the thermal layer of water underground.