Solar energy storage using phase change materials
The continuous increase in the level of greenhouse gas emissions and the climb in fuel prices are the main driving forces behind efforts to more effectively utilise various sources of renewable energy. In many parts of the world, direct solar radiation is considered to be one of the most prospective sources of energy. However, the large-scale utilisation of this form of energy is possible only if the effective technology for its storage can be developed with acceptable capital and running costs. One of prospective techniques of storing solar energy is the application of phase change materials (PCMs). 
Toward Cost-Effective Solar Energy Use
At present, solar energy conversion technologies face cost and scalability hurdles in the technologies required for a complete energy system. To provide a truly widespread primary energy source, solar energy must be captured, converted, and stored in a cost-effective fashion. New developments in nanotechnology, biotechnology, and the materials and physical sciences may enable step-change approaches to cost-effective, globally scalable systems for solar energy use. 
Silicon Solar Energy Converters
Theory is given for the design of silicon solar energy converters commonly known as the Bell Solar Battery. Values are given for the various parameters in the design theory. Experimental data are presented and compared with the theoretical relations based on a simple model. 
Enforcement of Access to Effective Technical Support Services in the Kenyan Solar Energy System
Energy is the prime mover of development cutting across industrialisation, manufacturing and residential consumption. Recently, Kenya, being ranked high among the most developed countries in Africa, has mapped way for embracement of renewable energy technology with increasing debate on sustainable development and environmental issues associated with fossil fuels, as the prime energy sources. 
Solar Energy as an Alternative for an All Year Round Production of Vegetables in Anambra, Nigeria
Epileptic power supply is a major problem in Nigeria and one of the ways Nigerians have solving this challenge is by using renewable energy as an alternative power supply in place fossil fuels. Among renewable energy sources, solar is the most important because it is available in this part of the world. 
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 Prince, M., 1955. Silicon solar energy converters. Journal of Applied Physics, 26(5), pp.534-540.
 Mugo, J. and Muguthu, J. (2019) “Enforcement of Access to Effective Technical Support Services in the Kenyan Solar Energy System”, Journal of Energy Research and Reviews, 3(1), pp. 1-6. doi: 10.9734/jenrr/2019/v3i130086.
 Ikeh, C. U. (2019) “Solar Energy as an Alternative for an All Year Round Production of Vegetables in Anambra, Nigeria”, Journal of Energy Research and Reviews, 2(3), pp. 1-5. doi: 10.9734/jenrr/2019/v2i330079.