Table 4 Fixed and variable operating expenses
From: Stochastic techno-economic analysis of the production of aviation biofuel from oilseeds
Fixed expenses | Variable operating expenses | Unit prices (US$) | ||
|---|---|---|---|---|
Labour | 12 staff @ $72Â k/year | Vegetable oil | ||
 Camelina | 323/tonne seed | |||
 Carinata | 356/tonne seed | |||
Overhead | 0.2% of TPI | Â Jatropha | 254/tonne seed | |
Maintenance | 5.5% of TPI | Natural gas | 3.05/GJ | |
Insurance | 0.5% of TPI | Electric power | 0.21/kWh | |
Taxes | 1% of TPI | Water | 1.62/kL | |
Contingency | 10% of the above subtotal | Hydrogen gas | 1.21/kg | |