Authors : Jean Paul Nshimiyimana; Dr. Jean De Dieu Dushimimana

Volume/Issue : Volume 11 - 2026, Issue 9 - September

Google Scholar : https://tinyurl.com/d8hb8p25

DOI : https://doi.org/10.38124/ijisrt/26sep112

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

Abstract : The study examined the effect of project management approaches on the performance of the Solar Power Project Plant in Kayonza District, Rwanda. The study specifically evaluated the influence of Agile, Waterfall, and Lean project management approaches on solar energy project performance, with a focus on adaptability and efficiency, structured execution, and resource optimization respectively. The research was guided by three objectives: to assess the impact of Agile project management approach on project performance, to examine the influence of Waterfall project management tactics, and to determine the effect of Lean project management ethics on project outcomes. Accordingly, the study tested the hypotheses that Agile, Waterfall, and Lean project management approaches have significant positive effects on project performance. A mixed-methods research design was adopted, combining descriptive and correlational approaches. The target population consisted of 273 individuals directly involved in the solar project, including project managers, engineers, financial officers, and local leaders. A sample size of 162 respondents was selected using stratified random sampling techniques to ensure proportional representation of all relevant groups. Primary data were collected using structured questionnaires based on a 5-point Likert scale, supplemented by documentary analysis for secondary data. Reliability and validity were ensured through a pilot test, Cronbach’s alpha coefficient, and expert review. Data were analyzed using SPSS, employing descriptive statistics, correlation analysis, and multiple regression analysis.

Keywords : Project Management Approaches; Agile Project Management; Waterfall Methodology; Lean Project Management; Solar Energy Projects; Project Performance; Renewable Energy.

References :

1. Adebayo, O., and Osei, T. (2023). Lean project management and cost efficiency in renewable energy projects: A case study of South Africa’s Jasper Solar Power Project. Renewable Energy Journal, 58(2), 214-230.
2. Algarni, A., Hussain, M. A., and Alghamdi, A. (2020). Performance Evaluation of Solar Power Projects: Case Study of a Large-Scale Photovoltaic Plant. Renewable and Sustainable Energy Reviews, 127, 109861.
3. Beck, K., Beedle, M., van Bennekum, A., Cockburn, A., Cunningham, W., and Fowler, M. (2020). Agile Manifesto. 
4. Boehm, B. W. (2017). Software Engineering Economics. Prentice Hall.
5. Conforto, E. C., Salum, F., Amaral, D. C., da Silva, S. L., and Almeida, L. F. M. (2016). Can Agile Project Management Be Adopted by Industries Other than Software Development? Project Management Journal, 47(3), 21-34.
6. GoR (2021). National Approach for Transformation (NST1) and Vision 2050. Government of Rwanda.
7. Highsmith, J. (2019). Agile Project Management: Creating Innovative Products. Addison-Wesley.
8. Hossain, M. S., et al. (2020). A Review on Solar PV Performance and Maintenance Approaches. Renewable Energy Journal, 145, 100-120.
9. Hughes, B., and Cotterell, M. (2020). Software Project Management: A Unified Framework. 7th ed. McGraw-Hill Education.
10. IEA (2021). World Energy Outlook 2021. International Energy Agency.
11. IRENA (2022). Renewable Power Generation Costs in 2022. International Renewable Energy Agency.
12. Iyer, P., Singh, R., and Patel, S. (2023). Stakeholder management and project success in large-scale solar projects: Lessons from India’s Rewa Ultra Mega Solar Project. Energy Policy and Management, 45(3), 312-328.
13. Jones, D. T., and Womack, J. P. (2019). Lean Thinking: Banish Waste and Create Wealth in Your Corporation. Simon and Schuster.
14. Kerzner, H. (2021). Project Management: A Systems Approach to Planning, Scheduling, and Controlling. 12th ed. Wiley.
15. Kisembo, J., and Takunda, P. (2023). Waterfall project management and solar energy performance: An empirical study of Uganda’s Soroti Solar Power Plant. African Journal of Energy Studies, 41(1), 78-96.
16. Lazard (2022). Lazard’s Levelized Cost of Energy Analysis-Version 16.0.
17. Liker, J. K., and Convis, G. L. (2020). The Toyota Way to Lean Leadership: Achieving and Sustaining Excellence through Leadership Development. McGraw-Hill Education.
18. Lourenço, T., et al. (2018). Lean Project Management and Its Effectiveness in Renewable Energy Projects: A Case Study Approach. Journal of Project Management, 33(2), 45-59.
19. MININFRA (2024). Rwanda’s energy policy and project performance assessment report. Ministry of Infrastructure, Government of Rwanda.
20. Modig, N., and Åhlström, P. (2020). This is Lean: Resolving the Efficiency Paradox. Rheologica Publishing.
21. Moran, C. (2020). Agile Project Management for Dummies. Wiley.
22. Müller, R., and Jugdev, K. (2020). Critical Success Factors in Project Management: Perspectives from Practitioners and Academics. Project Management Journal, 51(4), 356-372.
23. Müller, R., and Jugdev, K. (2023). European best practices in renewable energy project management: An analysis of Germany’s solar initiatives. International Journal of Project Management, 37(4), 490-508.
24. Nicholas, J. M., and Steyn, H. (2022). Project Management for Engineering, Business and Technology. Routledge.
25. NREL. (2020). National Renewable Energy Laboratory: Solar Performance and Monitoring. https://www.nrel.gov
26. OECD (2021). Aligning Energy Projects with Sustainable Development Goals.
27. Ohno, T. (2021). Toyota Production System: Beyond Large-Scale Production. Productivity Press.
28. Okonkwo, C., Adekunle, S., and Uchenna, R. (2022). Risk-based project management in solar energy development: Evidence from Nigeria’s Nova Scotia Power Plant. Journal of Energy and Environmental Management, 29(5), 152-167.
29. Omolo, L., and Wanjiru, K. (2023). Agile project management and adaptability in solar energy projects: Case study of Kenya’s Garissa Solar Power Plant. East African Journal of Renewable Energy, 33(2), 105-121.
30. PwC (2020). The Future of Energy Project Management. PricewaterhouseCoopers.
31. REG (2022). Rwanda Energy Group Annual Report 2022. Rwanda Energy Group.
32. REN21 (2022). Renewables 2022 Global Status Report. Renewable Energy Policy Network for the 21st Century.
33. Rigby, D. K., Sutherland, J., and Takeuchi, H. (2019). Embracing Agile: How to Transform Your Organization with Agile Principles. Harvard Business Review Press.
34. Rigby, D. K., Sutherland, J., and Takeuchi, H. (2020). Agile at Scale: How to Go from a Few Teams to Hundreds. Harvard Business Review.
35. Royce, W. W. (1970). Managing the Development of Large Software Systems. Proceedings of IEEE WESCON.
36. Rwanda Development Board (2024). Vision 2050: The roadmap for sustainable energy expansion in Rwanda. Government of Rwanda Publication.
37. Rwanda Energy Group (REG) (2024). Solar power project performance report: Challenges and recommendations. Rwanda Energy Sector Review.
38. Serrador, P., and Pinto, J. K. (2021). Does Agile Work? – A Quantitative Analysis of Agile Project Management Success. International Journal of Project Management, 33(1), 29-40.
39. Sharma, R., and Goel, S. (2019). Solar Energy Systems: Advances and Applications. Springer.
40. Shenhar, A. J., and Dvir, D. (2018). Reinventing Project Management: The Diamond Approach to Successful Growth and Innovation. Harvard Business Press.
41. Smith, and O’Connor, T. (2019). Project Management: A Systems Approach to Planning, Scheduling, and Controlling. Wiley.
42. Smith, and Brown, P. (2023). Agile methodologies in renewable energy projects: Enhancing efficiency and cost reduction in US solar projects. Project Management Review, 55(1), 89-105.
43. Solangi, K. H., Islam, M. R., Saidur, R., and Rahim, N. A. (2019). A Review of the Key Challenges in Solar Power Projects: Technological, Financial, and Regulatory Perspectives. Renewable and Sustainable Energy Reviews, 74, 364-376.
44. Solangi, K. H., Islam, M. R., Saidur, R., and Rahim, N. A. (2019). A Review of the Key Challenges in Solar Power Projects: Technological, Financial, and Regulatory Perspectives. Renewable and Sustainable Energy Reviews, 74, 364-376.
45. Sung, Y., Lee, J., and Lee, D. (2021). Impact of Technological Advancements on the Performance of Solar Power Plants. Solar Energy, 213, 358-367.
46. Tawalbeh, M., et al. (2021). Environmental and Sustainability Challenges of Solar Photovoltaic Systems. Renewable and Sustainable Energy Reviews, 145, 110-125.
47. Turner, J. R. (2016). Gower Handbook of Project Management. Routledge.
48. Turner, J. R. (2023). Governing Large-Scale Renewable Energy Projects: A Global Perspective on Project Management Approaches. Routledge.
49. UNEP (2020). Sustainable Energy Solutions for Rural Electrification. United Nations Environment Programme.
50. World Bank (2021). Financing Renewable Energy Projects in Emerging Markets.
51. Wysocki, R. K. (2020). Effective Project Management: Traditional, Agile, Extreme. Wiley.
52. Zhao, X., Li, Y., and Chen, W. (2022). Strategic planning and execution of China’s Tengger Desert Solar Park: A case study of large-scale solar project management. Asian Journal of Sustainable Development, 48(3), 229-245.