Schedule No 10: Commitment on Annual Operating Costs Item Consumable Unit Unit Price Contractor's  Value Annual Cost  Euro/year a b c d = b x c 10.1 Net Power  Consumption = Total  Power Consumption for  hydraulic, organic, and  sludge load - Power  Production by CHPs. kWh 0.100 Euro/kWh 0,00 - Chemicals 10.2 Polymer (dry) Ton 3,000 Euro/ton 0,00 - 10.3 Ferric Chloride (40%  FeCl$_{3}$)  Ton 250 Euro/ton  0,00 - 10.4 Methanol Ton 500 Euro/ton 0,00 - Gas  10.5 Natural Gas for Sludge  Drying m3 0.55 Euro/Sm 3 0,00 - Spare Parts (for WWTP) 10.6 - - STAGE 1 - AVERAGE FLOWS AND LOADS 1% of the total investment cost for each year ((SUM of Schedules  2 to 9) X 1%) ONE YEAR OPERATING COST (OPEX), Total for Schedule  No 10 (to be carried forward to Schedule No 1)