Research Article
Optimal Sizing and Analysis of a Small Hybrid Power System for Umuokpo Amumara in Eastern Nigeria
Table 4
Monthly solar radiation and clearness index [
9].
| | Month | Clearness index | Daily radiation (kWh/m2/d) |
| | January | 0.533 | 5.035 | | February | 0.506 | 5.047 | | March | 0.480 | 4.991 | | April | 0.446 | 4.647 | | May | 0.434 | 4.390 | | June | 0.397 | 3.917 | | July | 0.366 | 3.633 | | August | 0.398 | 4.072 | | September | 0.410 | 4238 | | October | 0.430 | 4.318 | | November | 0.498 | 4.747 | | December | 0.540 | 4.488 | | Average | 0.452 | 4.699 |
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