Fuel type Plant type Effici ency Life time Product per year Capital investment Operation and maintenance Fuel Total cost MW     % Yrs MWh/yr    DKK/ MW DKK/ MWh *** % of investment per  year DKK/ MWh Calorific value in MJ/kg Price in DKK/k g Cost in DKK/M Wh DKK/ MWh Hard coal 400 47 30 1.75E6 8E6 110 3.2 59 25.1 0.28 84 250 Nat. gas 15 36 25 6.6E4 5E6 82 2.5 59 39.6 (MJ/m³) 1.3 (/m³) 330 470 Nat. gas 250 CC* 54 30 1.1E6 5E6 68 2.5 34 39.6 (MJ/m³) 1.3 (/m³) 220 320 Heavy fuel oil 15 43 25 6.6E4 6E6 99 - 100**    40.6 0.69 140 340 Bio- mass 250* CFB 45 30 1.1E6 8E6 110 4 73 17.5 0.53 240 420 * CC: Combined Cycle in which a natural gas driven turbine and another turbine driven from steam produced from the exhaust gas of the gas turbine. CFB: Circulating Fluid Bed. Technology at experimental stage. ** Authors’ estimate. Total cost 250-320 DKK/MWh according to Hammar (1997) excl. capital goods. *** Includes a factor 1.8 on the values from the previous column to take into account 6% interest on the investment over 20 years.