Construction of MEKS, Sperenberg’s multi-energy power plant, now entirely hinges on state government approval. In mid-July, the mayors of the four German towns involved signed a contract for the establishment of a community working group. But whereas local authorities would certainly welcome MEKS, the ones at state level have put a hold on the project, saying the selected area was not suitable for the construction of wind power facilities. The plan was to set up a 5 MW electrolysis system on the premises of the old airport of the Kummersdorf Proving Ground. This system was to receive the required eco-power from a 100 MW PV array and a wind farm consisting of 45 turbines (with 3 MW each) – although both will still have to be built. The H₂ gas could be stored in an already existing pipe system used for peak shaving (diameter: 1.4 meters or 4.6 feet; overall length: 3.5 kilometers or 2.2 miles; volume: 480,000 m³ or 16.95 million ft³) by the Thyrow gas plant, so that the 50,000 inhabitants of the participating communities could be supplied almost entirely by renewable electricity. But without state approval, MEKS will go nowhere – despite the support pledged by BTU Cottbus and large companies, such as Enertrag, Vattenfall and McPhy.