No.2 diesel oil consumption for a single 3.5MW genset is ~ 200 g/kW.h. Spot price for no.2 diesel oil is ~ $3 / US gallon ($3.50 for low sulphur). Density is ~

No.2 diesel oil consumption for a single 3.5MW genset is ~ 200 g/kW.h. Spot price for no.2 diesel oil is ~ $3 / US gallon ($3.50 for low sulphur). Density is ~ 920 kg/m^3, US gallon is 0.00378541 m^3, so running at rated capacity a single genset is: 700 kg / h 0.76 m^3 / h 201 US gallons / h (isn't that convenient?) $703 / h running on the good stuff $17k / day $123M for 20 years at today's spot price For a single genset. Call it $750M for a 20MW plant running continuously for 20 years. Feel free to factor in a prediction for rising cost of fuel oil. I pay over $9 per US gallon for premium diesel car fuel in the UK...