This study examined the barriers to the adoption of affordable and clean energy solutions in Maiduguri, with a view to identifying key factors limiting the uptake of renewable energy technologies among households and small-scale businesses. The study adopted a quantitative approach using a cross-sectional survey design, and data were collected from 400 respondents through structured questionnaires. Descriptive and inferential statistical techniques, including multiple regression analysis, were employed to analyze the data. The findings revealed that although awareness of clean energy solutions is relatively high, the level of adoption remains low. Economic barriers, particularly high initial costs and limited access to credit facilities, were identified as the most significant constraints. Technical challenges such as lack of skilled personnel and poor maintenance services, as well as institutional barriers including weak government policies and inadequate incentives, were also found to significantly hinder adoption. The regression results showed that these barriers have a negative and statistically significant effect on the adoption of clean energy solutions. The study concludes that addressing these challenges requires a comprehensive approach involving financial support mechanisms, capacity building, and policy reforms. The study recommends the provision of subsidies, improved access to financing, technical training, and strengthened regulatory frameworks to enhance the adoption of clean energy solutions in the study area. 

Keywords: Clean Energy, Renewable Energy Adoption, Economic Barriers, Technical Barriers and Institutional Barriers.