System | Geo-political zones | ||||||
NC | NE | NW | SE | SS | SW | Average | |
PV annual cost (US$) | 97.54 | 91.62 | 91.62 | 105.82 | 112.45 | 103.69 | 100.46 |
DG annual cost (US$) | 231.24 | 231.24 | 231.24 | 231.24 | 231.24 | 231.24 | 231.24 |
GKL annual cost (US$) | 136.50 | 136.50 | 136.50 | 136.50 | 136.50 | 136.50 | 136.50 |
AI of PV (−) | 4.17 | 3.92 | 3.92 | 4.52 | 4.81 | 4.43 | 4.29 |
AI of DG (−) | 9.88 | 9.88 | 9.88 | 9.88 | 9.88 | 9.88 | 9.88 |
AI of GKL (−) | 5.83 | 5.83 | 5.83 | 5.83 | 5.83 | 5.83 | 5.83 |