Table 10 Sensitivity analysis of biogas plant investment for changes in key variables
From: Cost-benefit Analysis and Financial Viability of Household Biogas Plant Investment in South Ethiopia
Variables | NPV values change as key variables change | |||
|---|---|---|---|---|
Plant size | Discount rate (9%) | Discount rate (10%) | Discount rate (12%) | |
Base case | 6Â m3 | 60,767 (55,263) | 56,508 (51,053) | 49,088 (43,731) |
8Â m3 | 59,738 (54,233) | 55,674 (50,219) | 48,591 (43,252) | |
Increase in price | 6Â m3 | 31,113 (18,462) | 27,648 (16,406) | 247,570 (1469) |
8Â m3 | 45,425 (1902) | 40,365 (1795) | 36,145 (1607) | |
Decrease in price | 6Â m3 | 22,430 (28,946) | 20,085 (32,325) | 23,770 (34,257) |
8Â m3 | 55,525 (2531) | 49,340 (2388) | 44,182 (2139) | |
Increase in level of expenditure savings | 6Â m3 | 49,089 (43,732) | 56,509 (51,055) | 60,768 (55,264) |
8Â m3 | 48,634 (44,152 | 55,743 (51,318) | 59,739 (54,236) | |
Decrease in level of expenditure savings | 6Â m3 | 59,667 (54,261) | 55,512 (51,641) | 48,189 (49,732) |
8Â m3 | 58,538 (55,333) | 56,673 (50,719) | 50,991 (44,651) | |