Study of Rooftop Solar Integration in Residential Architecture in Ibadan, Oyo State

The proliferation of rooftop solar photovoltaic installations across Ibadan residential properties reflects both the failure of the national electricity grid and a growing household investment in energy independence, yet the architectural integration of these systems varies widely and often compromises roof integrity, aesthetics, and system performance. This study examines the approaches to rooftop solar integration in residential buildings across three neighbourhoods in Ibadan: Bodija, Ring Road, and Agodi GRA. Field surveys of eighty solar-equipped residences documented installation typology, mounting configuration, roof orientation and pitch alignment, aesthetic integration quality, and visible maintenance conditions. Interviews were conducted with fifteen solar installation contractors and forty homeowners. Installation quality was rated using a three-tier classification assessing structural adequacy, electrical safety compliance, and architectural integration. Results indicate that the majority of installations, accounting for sixty-two percent, were rated as functionally adequate but architecturally poor due to ad hoc mounting frames that conflict with roof lines and detract from building appearance. Structurally inadequate installations representing potential wind uplift failures were identified in fourteen percent of surveyed properties. Only nine percent of installations were rated as well-integrated, with panels mounted flush to roof slopes or within integrated racking systems. Contractor interviews revealed minimal engagement with the architecture of the host building during installation design. The study argues for the development of an architectural solar integration design guide for Oyo State, and recommends that building permit applications for residential development include solar-readiness provisions. Keywords: rooftop solar, photovoltaic integration, residential architecture, Ibadan, energy design.