Table 2.
Detail of costs evaluation for the baseline scenario.
| Cost type | Cost item | Best case | Baseline | Worst case | Unit |
|---|---|---|---|---|---|
| OPEX | Electricity | 47 | 59 | 71 | k€·y−1 |
| Water, reagents | 55 | 68 | 82 | k€·y−1 | |
| Labour | 72 | 90 | 108 | k€·y−1 | |
| Maintenance and cleaning | 38 | 38 | 38 | k€·y−1 | |
| Fees | 181 | 181 | 181 | k€·y−1 | |
| Depreciation | 210 | 247 | 283 | k€·y−1 | |
| Other costs | 15 | 15 | 15 | k€·y−1 | |
| Total yearly cost | 618 | 698 | 778 | k€·y−1 | |
| CAPEX | Photobioreactor (PBR) | 880 | 1,100 | 1,320 | k€ |
| Raceway ponds (RWP) | 1,360 | 1,700 | 2,040 | k€ | |
| Heterotrophic cultivation (HET) | 680 | 850 | 1,020 | k€ | |
| Pre-concentration and harvesting (BPC, BH) | 320 | 320 | 320 | k€ | |
| Land | 128 | 160 | 192 | k€ | |
| Other costs | 966 | 966 | 966 | k€ | |
| Total expenditure | 4,334 | 5,096 | 5,858 | k€ | |
| Specific costs | Total biomass production | 252 | 252 | 252 | t DW·y−1 |
| Specific biomass production cost | 2.5 | 2.8 | 3.1 | €· tDW−1 |