Effectiveness of Vertically Mounted Solar Panels on Buildings - a Case Study of Radisson Blu Hotel

Abstract

Solar energy is a renewable energy source that can help reduce a hotel’s energy demand. Hotels being some of the largest energy consumers in Kenya can incorporate solar to save on energy costs. This research suggests the use of vertically mounted solar panels on building walls, especially tall buildings as the wall area is generally larger than the roof area. This is considered an element of Building Integrated Photovoltaic where a building’s structure is used to produce power. The aim of this research was to establish how effective and feasible are vertical, wall-mounted PV panels in the case of Radisson Blu Hotel located in Nairobi, Kenya. An experimental model was set up to evaluate and determine the output and efficiency of vertically mounted solar panels (VMSP). The results obtained were compared with the traditional horizontal models. The results were also compared to the current guest energy use to determine the savings expected. With this experimental setup, savings of USD 52.28 and a payback period of 7 years with a return on investment of 14% can be realized. The payback period and Return on Investment (ROI) can be improved by using higher power-rated panels and increasing the number of modules. Recommendations for further research and studies were also suggested. Overall, hotels and buildings in general in Kenya should take advantage of the good climate and incorporate solar in their list of energy sources in order to maximize its benefits. With this, they can gain a competitive edge over their peers by saving on energy costs and being labeled as green buildings.