Diemuodeke, Ogheneruona E., and Imeghri M. Okorho. 2016. “Optimal Hybrid PV-Battery-Diese Generator Energy System for the Oil Producing Communities in Niger-Delta, Nigeria: A Case Study”. Distributed Generation &Amp; Alternative Energy Journal 31 (3):33-54. https://doi.org/10.13052/dgaej2156-3306.3132.