In Estonia the team leaders was received at combi-station Tartu Fortum which is one of the biggest enterprises in the Tartu municipality. Producing heat energy, mediating, selling and purchasing heat and electricity, producing and supplying local fuels. Also Waste Water Sediment Treatment Complex, the department of Tartu Veevärk (the second largest water supplier in Estonia) was been visited during the team leader visit in Tartu municipality.
From the organic part of the waste water sediment will produced mostly methan consisting biogas by anaerobic fermentation in this Waste Water Sediment Treatment Complex. Biogas will used for production of electricity and heat, later on also as biofuel for the public buses. The Tartu Waste Water Sediment Treatment Plant was under reconstruction in this summer.