DECENTRALISED RENEWABLE ENERGY SYSTEMS: A SUSTAINABLE SOLUTION FOR NIGERIAS ENERGY CRISIS

Abstract

Nigeria faces an enduring energy crisis marked by low electrification rates, frequent power outages, and overreliance on a centralized, fossil fuel-dependent grid. This study investigates the role of Decentralised Renewable Energy Systems (DRES) as a viable and sustainable alternative to bridge Nigeria's persistent energy access gap. The research adopts a qualitative, descriptive methodology based entirely on secondary data sourced from international development agencies, Nigerian regulatory bodies, academic literature, and case-specific project reports. The analysis explores current electrification patterns, the technical and economic feasibility of decentralised solutions-especially solar-based mini-grids and home systems-and assesses socioeconomic , environmental, and institutional dimensions critical to effective deployment. Key findings highlight that Nigeria's high solar insolation (averaging 5.5 kWh/m²/day), combined with the successful rollout of initiatives like the Nigeria Electrification Project (NEP), underscores the technical and economic viability of decentralised systems. The deployment of over 770,000 solar home systems and more than 100 mini-grids under NEP has already improved energy access for 3.5 million Nigerians, particularly in underserved rural communities. The study also evaluates national and international policy frameworks, such as Nigeria's Renewable Energy Master Plan (REMP) and India's Saubhagya scheme, identifying best practices that could be adapted locally. Key barriers identified include institutional fragmentation, limited financing channels, and inconsistent policy enforcement, which inhibit large-scale adoption. The research further analyses the environmental benefits of decentralised systems, such as reductions in greenhouse gas emissions and decreased reliance on diesel generators. It also assesses economic impacts at the household and microenterprise levels, revealing increased productivity, income generation, and willingness to pay for reliable electricity. In light of these findings, the study recommends structural reforms, including streamlining licensing processes, enhancing inter-agency coordination, scaling performance-based grant programs, and integrating gender-sensitive policies into energy planning. Ultimately, the study concludes that DRES, when supported by a coherent policy framework, strategic funding mechanisms, and community engagement, can drive Nigeria's transition towards inclusive, sustainable, and resilient energy access. This research contributes to the discourse on energy justice in sub-Saharan Africa and underscores the importance of decentralised models in achieving universal electrification and climate goals.