Project Planning Analysis of an Off-Grid Photovoltaic Power System Development for the Ikeja Suburb of Metropolitan Lagos, Nigeria
Abstract
The study examined project-planning parameters for rooftop-based off-grid photovoltaic (PV) energy generation in Ikeja, Metropolitan Lagos using energy planning and analysis methodology. The study determined predominance of small-roof types (97%), with highest orientation from the North between 45 – 90o and rooftop slopes less than 15o (65%). Balance of System analysis showed that inverter capacities (24 – 480 V), required 11.85 – 1848.9 m2 roof areas, 7 – 1154 solar panels, 4 – 52 200AH batteries, 2 – 500 kVA in inverter sizes, and producing 1.11 – 173.5 kVA of power. The PV System’s Levelised and Social Costs of Energy were N 42.42 – 108.12/kWh and 0 N/kWh respectively, much lower than alternative petrol- and diesel-generation systems (LCOE: N 113.40 and N 87.85/kWh respectively; SCOE: N 123 – 282.10 and N 109.73 – 494.38/kWh respectively). The solar supply curves indicate that subsidies would be required the least when carbon costs are the highest. The study showed that the off-grid PV power generation option was techno-economically viable.
