A recent systematic review conducted by Bonginkosi A. Thango from the Department of Electrical and Electronic Engineering Technology at the University of Johannesburg sheds light on the potential of Hybrid Renewable Energy Systems (HRESs) to provide reliable electricity during power interruptions, particularly in rural and remote areas of sub-Saharan Africa. With around 600 million people in the region lacking access to electricity, the need for sustainable energy solutions has never been more pressing.
HRESs typically combine renewable energy sources like rooftop solar photovoltaic (PV) systems with diesel generators (DGs) and battery energy storage systems (BESSs). This combination aims to create a more reliable and cost-effective electricity supply, especially in areas where the traditional electric grid is either non-existent or unreliable. Thango’s review highlights that while renewable energy sources are inherently intermittent, integrating them with reliable backup systems can smooth out supply issues.
“Hybrid Renewable Energy Systems offer significant advantages in managing energy supply during power interruptions,” Thango noted. This is particularly relevant in regions with high solar potential but inconsistent grid access. By leveraging solar PV alongside diesel generators, communities can ensure a steady power supply even during outages, which is crucial for both daily living and economic activities.
The research analyzed the techno-economic performance of various HRES configurations across different countries, revealing that these systems are not only cost-efficient but also environmentally beneficial compared to traditional single-resource energy systems. The review highlights the commercial opportunities that arise from adopting HRESs, particularly in developing markets where energy access is a significant barrier to growth.
One of the key findings of the study is the importance of understanding the economic aspects of HRESs. Thango emphasized that “without an in-depth comprehension of the techno-economic facets, the adoption of HRESs faces formidable obstacles.” This insight is vital for stakeholders, including policymakers and investors, as it underscores the need for informed decision-making when considering energy infrastructure investments.
The review also points out that while diesel generators are often viewed as a transitional technology, they play a critical role in ensuring energy reliability in areas where fully renewable systems may not yet be feasible. This presents a unique opportunity for businesses involved in the energy sector to develop and promote hybrid systems that can effectively address immediate energy needs while paving the way for a more sustainable future.
As governments and organizations increasingly seek to address energy challenges, the insights from this systematic review published in ‘Eng’ (an engineering journal) can serve as a foundational document for future research and development in hybrid energy systems. The findings call for further innovation in financing models and policy frameworks that can support the wider adoption of HRESs, ultimately contributing to improved energy access and sustainability in regions most in need.
In summary, the research provides a comprehensive look at how HRESs can transform energy access in sub-Saharan Africa, highlighting both the commercial viability and the environmental benefits of such systems. As the energy sector continues to evolve, the integration of hybrid systems may well be the key to overcoming the challenges of power interruptions and fostering economic growth in underserved communities.
