Delays in Construction of Electrical Power Transmission Lines in Zambia

Abstract

Construction is one of the major industries contributing significantly to national economies, in terms of Gross Domestic Product (GDP), especially in developing countries. However, most of the projects world over are faced with challenges of schedule overruns. In Zambia, construction of electricity transmission lines is usually delayed, such that some towns are still powered by diesel generators to cushion such delays. Delays in construction of electricity transmission lines in the energy sector are a challenge faced by many other countries world over.A study was undertaken to establish the causes of delays in the construction of electricity transmission lines in Zambia and recommendations were made for the best practices that could be used to improve on the effectiveness and efficiency in the management of electricity transmission line projects, to address the causal factors. The methodology adopted for the study included; a comprehensive Literature review, structured interviews and a questionnaire survey. Purposive sampling was also conducted with key personnel such as project managers and engineers engaged on different projects from both clients and contractors.  The three major causes of delays during the project execution stage, are; late advance payments, poor financial management by the contractor, and irregular payments to sub-contractors.  To address the delay due poor financing by the contractor and subcontractor, it is recommended that employers conduct due diligence on financial standing of contractors, before contract award, and that the public procurement regulatory authority certifies availability of project funds before the tendering process, and that the client makes direct payments to sub-contractors.