This paper presents an assessment of solar energy resources in Niger Delta case study of Port Harcourt and Yenagoa. The use of alternative sources of electricity is gaining popularity in different parts of the world especially with lots of interest being focused on harnessing solar energy. This work point out the irradiance viability and characteristic of solar sunshine per hour in Port Harcourt and Yenagoa City in the Niger Delta region of Nigeria. Several literatures were reviewed. Data were collected from the Nigerian Meteorological Agency (NiMET) and were analyzed. Matlab/Simulink was employed in the analyses and the output results were discussed. The result shows that Yenagoa City has more solar energy viability than Port Harcourt.