Strategic Assessment of the Utilization of Energy-Efficient Lighting Devices in Municipal Residential Complexes in Selected States in Southwestern Nigeria

This study characterized electric lighting devices utilized in municipal residential complexes in Southwestern Nigeria, assessed the utilization of energy-saving lighting devices, and investigated the factors influencing this utilization to assess the effectiveness of energy savings policy implementation in the region. The study entailed a survey analysis of 300 housing units across three government-approved housing estates in Oyo and Lagos States located in Southwest Nigeria. The study determined that energy-saving lighting devices constituted 97% of lighting bulbs in municipal residential complexes in the region, with the 15W-light emitting diode (LED) bulbs being the dominant bulb type. The study provided evidence of a significant shift in lighting bulb usage from the dominant incandescent bulb (especially the 60W type) in the early 2000s to the LED bulb (especially 15W type) in 2023. Furthermore the study revealed that the most important factors influencing the utilization of energy-saving bulbs in the study area (on a 10-point Likert scale) were the energy-saving lighting devices’ (ESLD) performance trustworthiness (8.71), energy-saving capabilities (8.63), bulb luminance (8.36), bulb durability (8.14), product availability (7.77), and price-to-performance perception (7.45). Government policy awareness and implementation was revealed to be a moderately important factor (5.88). The study concluded that the Nigerian government’s strategic energy policy measures to promote the usage of energy-saving lighting devices in municipal housing could be considered as effective, albeit a secondary rather than a primary consequence of the policy in selected States in the Country’s Southwestern Geopolitical Zone.