Relationship between Power Supply Interruptions and Financial Performance of Manufacturing Companies in Machakos County

  • Nyangwaria Martha Cheruto Management University of Africa
  • P. Munene Management University of Africa


The importance of power supply to economic development of any nation cannot be overemphasized. Availability and access to reliable electricity supply has a rippling effect on productivity of manufacturing firms. Unreliable power leads to disruptions in production, loss of perishable goods, damage to sensitive equipment and loss of orders. The study examined the relationship between power supply interruptions and manufacturing companies’ financial performance in Machakos County. The study employed descriptive research design. The population for this study constituted the 69 manufacturing firms in Machakos County. The study found that scheduled maintenance and financial performance are positively and significantly related. Equipment vandalism and financial performance are negatively and significantly related. It was also established that response time and financial performance are positively and significantly related. Repair costs and financial performance are negatively and significantly related. In conclusion, electricity is necessary for the operation of any manufacturing company and any interference with electricity supply makes manufacturing companies run into serious losses. The financial performance of manufacturing companies in Machakos County are always affected by; scheduled maintenance by power utility, vandalism of electrical equipment, the response time by power utility staff to restore power and the cost the companies incur in terms of paying losses as a result of damage caused by power outage. Due to the important nature of electricity in the manufacturing industry, there is need to create clear policy framework protecting manufacturing companies from regular power outage which has  an adverse effect on the operations of the manufacturing companies in the country. Scheduled maintenance by should be done in such a way that it does not interfere with the normal operations of manufacturing companies. The government and the utility company should ensure that there are vigilant groups are formed to  safe guard power equipment and power lines against vandalism which has become a major setback to the utility company in its attempt to maintain constant power supply.

Keywords: scheduled maintenance, equipment vandalism, response time, interruption repairs, financial performance, manufacturing companies, Machakos County

Author Biographies

Nyangwaria Martha Cheruto, Management University of Africa

Postgraduate Student, Management University of Africa

P. Munene, Management University of Africa

Senior Lecturer, Management University of Africa


Aghion, P., & Holden, R. (2011). Incomplete contracts and the theory of the firm: What have we learned over the past 25 years? Journal of Economic Perspectives, 25(2), 181-97.

Akiri, S. E., Ijuo, O. A., & Apochi, M. P. (2015). Electricity supply and the manufacturing productivity in Nigeria (1980-2012). IOSR Journal of Economics and Finance (IOSR-JEF), 6(6), 90-94.

Alam, M. (2013).Coping with blackouts: Power outages and firm choices. Department of Yale University. ABC Publishing.

Allcott, H., Collard-wexler, A., & O’connellú, S. D. (2015). How Do Electricity Shortages Affect Productivity? Evidence from India, Journal of Energy Technologies and Policy, 23(4), 1-79.

Amadi, H. N. (2015). Impact of power outages on developing countries: evidence from rural households in Niger Delta, Nigeria. Journal of Energy Technologies and Policy, 5(3), 51-58.

Andersen, T. B., & Jensen, P. S. (2014). Is Africa's recent growth sustainable? .International Economic Journal, 28(2), 207-223.

Andersen, T. B., &Dalgaard, C. J. (2013).Power outages and economic growth in Africa. Energy Economics, 38, 19-23.

Brown, R. E. (2008). Electric power distribution reliability. CRC press.

Campbell, R. J. (2012). Weather-related power outages and electric system resiliency. Washington, DC: Congressional Research Service, Library of Congress.

Cissokho, L., & Seck, A. (2013). Electric Power Outages and the Productivity of Small and Medium Enterprises in Senegal

Doe, F., & Emmanuel, S. E. (2014). The effect of electric power fluctuations on the profitability and competitiveness of SMEs: A study of SMEs within the Accra Business District of Ghana. Journal of Competitiveness, 6(3), 23-34

Dong, D., & Petersen, I. R. (2010). Quantum control theory and applications: a survey. IET Control Theory & Applications, 4(12), 2651-2671.

Dorcas, Q., Agyeman, B., & Bonn, J. (2017). Power Outages On Performance Of Selected Manufacturing Firms On The Ghana Stock Exchange. European Journal of Business, Economics and Accountancy, 5(6), 94-102

Dzansi, D. Y., Rambe, P., &Mathe, L. (2014). Cable Theft and Vandalism by Employees of South Africa’s Electricity Utility Companies: A Theoretical Explanation and Research Agenda. Journal of Social Sciences, 39(2), 179-190.

Enofe, O. M., &Aimienrovbiye, G. (2010). Maintenance impact on Production Profitability-A Case Study. (Unpublished Thesis, Linnaeus University).

Fernandes, A. M. (2006). Firm productivity in Bangladesh manufacturing industries. The World Bank.

Fisher-Vanden, K., Mansur, E. T., & Wang, Q. J. (2015). Electricity shortages and firm productivity: evidence from China's industrial firms. Journal of Development Economics, 114, 172-188.

Forkuoh, S. K., & Li, Y. (2015). Electricity power insecurity and SMEs growth: a case study of the cold store operators in the Asafo market area of the Kumasi metro in Ghana. Open Journal of Business and Management, 3(03), 312-325

George, E.O. (2012). The Relationship between Electricity Power and Unemployment Rates in Nigeria. Iwoye, Nigeria: Australian Journal of Business and Management Research 2(2), 1-3.

Ghajar, R. F., &Billinton, R. (2009). Economic costs of power interruptions: a consistent model and methodology. International Journal of Electrical Power & Energy Systems, 28(1), 29-35.

Glad, T., &Ljung, L. (2014). Control theory. CRC press.

Haanes C., Siddiqui, R., Jalil, H. H., Nassir, M. & Malik, W. S. (2011).The Cost of Unserved Energy: Evidence from Selected Industrial Cities of Pakistan. Working Papers No. 75 Pakistan Institute of Development Economics.

Hamachi La & Commare, K. (2013).A Quantitative Assessment of Utility Reporting Practices for Reporting Electric Power Distribution Events.In2012 IEEE Power & Energy Society General Meeting.

Jayalath, M. S., Varadan, S., Wijetunga, D. P., Comester, R., Fernando, R., Wijeratna, N. A. S., &Dinamulla, D. K. A. M. (2012). Assessment of economic impact of poor power quality on industry.

Kavishe, T. E. (2015). Coping with Power Interruptions in Tanzania: An Industrial Perspective A Case Study of One Small Scale Animal Food Processing Industry in Moshi Municipality (Master's thesis).

Kjølle, G. H., Utne, I. B., &Gjerde, O. (2012).Risk analysis of critical infrastructures emphasizing electricity supply and interdependencies. Reliability Engineering & System Safety, 105, 80-89.

Küfeoğlu, S. (2015).Economic impacts of electric power outages and evaluation of customer interruption costs.

Lai, R., Wang, F., Burgos, R., Pei, Y., Boroyevich, D., Wang, B.& Karimi, K. J. (2008).A systematic topology evaluation methodology for high-density three-phase PWM AC-AC converters. IEEE Transactions on Power Electronics, 23(6), 2665-2680.

Linares, P., & Rey, L. (2013).The costs of electricity interruptions in Spain. Are we sending the right signals? Energy Policy, 61, 751-760.

Majiwa, M. Y. (2014). The impact of Electricity Distribution Transformer Vandalism on electricity utility business in Kenya: case study of Kenya Power and Lighting Company Ltd (Doctoral dissertation, United States International University-Africa).

Marczyk, G., DeMatteo, D., &Festinger, D. (2005).Essentials of research design and methodology. John Wiley & Sons Inc.

Marr, B. (2012). Key Performance Indicators (KPI): The 75 measures every manager needs to know. Pearson UK.

Moyo, B. (2013). Power infrastructure quality and manufacturing productivity in Africa: A firm level analysis. Energy policy, 61(issue), 1063-1070.

Mpatane, L. M. (2015). The impact of electricity supply on the manufacturing sector output in South Africa (Doctoral dissertation).

Mugenda, O.M. & Mugenda, A.G. (2003). Research Methods: Quantitative and Qualitative Approaches. Nairobi: African Centre for Technology Studies.

Newing, H. (2011). Conducting Research in Conservation: Social Science Methods and Practice. New York: Routledge.

Olugbenga, T. K., Jumah, A. G. A., & Phillips, D. A. (2013). The current and future challenges of electricity market in Nigeria in the face of deregulation process. African Journal of Engineering Research, 1(2), 33-39.

Olusola, A.J., Olugbenga, O.M., Adeoluwa, Z.O., &Oluwagbemiga, O.E. (2013).Accounting Information on Investment in Nigerian Poultry Agricultural Sector. Research Journal of Finance and Accounting, 4(19), 24-34

Ongore, V. O., &Kusa, G. B. (2013).Determinants of financial performance of commercial banks in Kenya. International Journal of Economics and Financial Issues, 3 (32), 2146-4138.

Orodho, A. J., &Kombo, D. K. (2002).Research methods. Nairobi: Kenyatta University, Institute of Open Learning.

Oseni, M. O., & Pollitt, M. G. (2013). The economic costs of unsupplied electricity: Evidence from backup generation among African firms. (University of Cambridge, Faculty of Economics).

Osobase, A., & Bakare, A. T. (2014). The Nexus between Electricity Generation/Supply and Manufacturing Sector Performance in Nigeria (1975-2011). International Journal of Management Sciences and Humanities, 2(2), 123-139.

Panteli, M., & Mancarella, P. (2015). The grid: Stronger, bigger, smarter?: Presenting a conceptual framework of power system resilience. IEEE Power and Energy Magazine, 13(3), 58-66.

Reinikka, R., & Svensson, J. (2002).Coping with poor public capital. Journal of development economics, 69(1), 51-69.

Simon-Oke, O. O. & Olayemi, S. O. (2012). Electricity Crisis and Manufacturing Productivity in Nigeria. Developing Country Studies, 2(4), 16-21.

Solomon, K. K. (2013). Maintenance practices and performance of power sector in Kenya.

Von Ketelhodt, A., &Wöcke, A. (2008). The impact of electricity crises on the consumption behaviour of small and medium enterprises. Journal of Energy in Southern Africa, 19(1), 4-12.

Wacker, G., &Billinton, R. (2009). Customer cost of electric service interruptions. Proceedings of the IEEE, 77(6), 919-930.

Williamson, O. E. (2010). Transaction cost economics: The natural progression. American Economic Review, 100(3), 673-90.
How to Cite
Cheruto, N., & Munene, P. (2019). Relationship between Power Supply Interruptions and Financial Performance of Manufacturing Companies in Machakos County. Journal of Human Resource & Leadership, 3(3), 1 - 26. Retrieved from