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Global Developments in Public Infrastructure Procurement

Evaluating Public–Private Partnerships and Other Procurement Options

Darrin Grimsey and Mervyn K. Lewis

There is widespread acceptance of the importance of infrastructure, but less agreement about how it should be funded and procured. While most public infrastructure is still provided in-house or by traditional procurement methods – with well-researched strengths and weaknesses – the development of service concession arrangements has seen a greater emphasis on lifecycle costing, risk assessment and asset design as featured in a variety of public private partnership (PPP) delivery models. This book examines the various procurement approaches, and provides a framework for comparing their advantages and disadvantages. Drawing on international experience, it considers some of the best and worst examples of PPPs, and infrastructure projects generally, along with the lessons for improving infrastructure procurement processes.
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Chapter 7: Comparing public infrastructure procurement models

Evaluating Public–Private Partnerships and Other Procurement Options

Darrin Grimsey and Mervyn K. Lewis

Extract

Undertaking comparative studies of alternative procurement models is a false trail for the various models have different drivers of value and merits. Consequently, the present chapter adopts a common approach to determine their characteristics and strengths. These models are: 1. Conventional unbundled procurement models Construct only Design and construct (D & C) / Design and build (DB) Engineering, procurement, construction (EPC) Design, construct, novate Construction management. 2. Other non-traditional unbundled models Managing contractor Alliance contracting Competitive alliance Early contractor involvement (ECI). 3. Bundled PPP models Design, build, operate, maintain (DBOM) Design, build, finance (DBF) Design, build, finance, operate (DBFO); Design, build, finance, maintain (DBFM) / Design, construct, maintain, finance (DCMF) Build, operate, transfer (BOT); Build, own, operate, transfer (BOOT); Build, own, operate (BOO). 4. The regulatory asset base model RAB model for new or improved infrastructure. Associated tables list their respective benefits and disadvantages, a comparison which leads directly to Chapter 8.

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