FIDIC Silver Book (EPC/Turnkey)

The FIDIC Silver Book is the informal name for the FIDIC Conditions of Contract for EPC/Turnkey Projects, designed for high-value, fixed-price contracts where a single contractor takes comprehensive responsibility for engineering, procurement, and construction and delivers a fully operational facility at contract completion.

What is the FIDIC Silver Book (EPC/Turnkey)?

The Silver Book concentrates nearly all project risk in the contractor. The employer defines the desired output and hands over the site; the contractor designs, procures all equipment and materials, constructs, commissions, and delivers a working facility. There is no independent engineer with an ongoing certification role as in the fidic-red-book-works or fidic-yellow-book-plant-and-design-build; the employer's representative oversees progress but does not administer the contract in the same interventionist way. Payment is on a fixed lump-sum basis, and the contractor bears the cost of ground conditions, weather, delays, and design errors, risks that the Red and Yellow Books allocate more evenly between the parties.

The Silver Book is suited to private finance or BOT (Build-Operate-Transfer) projects and to situations where the employer wants certainty of cost and completion date and is willing to pay a risk premium in the contract price for that certainty. It is less suited to projects with incomplete scope definition or significant ground uncertainty, where the employer's risk bearing capacity is limited. Development banks are cautious about recommending the Silver Book for publicly financed projects precisely because the risk transfer to the contractor can lead to adversarial relationships and poor project outcomes when site conditions are uncertain.

Why the FIDIC Silver Book matters for bidders

Contractors bidding Silver Book projects assume a concentration of risk that demands thorough pre-bid due diligence on site conditions, design assumptions, procurement lead times, and construction programme. The fixed lump-sum structure means that cost overruns caused by any factor within the contractor's risk perimeter -- including ground conditions and weather -- are the contractor's loss. Profitability on Silver Book contracts is won or lost in the bid phase through the quality of scope definition, risk quantification, and contingency pricing, not during execution. Contractors who approach a Silver Book bid with Yellow Book assumptions about employer risk sharing will systematically underprice their exposure. Understanding the specific allocation of employer risk (typically limited to specific listed employer risks) versus contractor risk (essentially everything else) is the critical first read of any Silver Book contract.

FAQ

When is the Silver Book used instead of the Yellow Book?

The Silver Book is used when the employer wants maximum certainty of cost and programme and minimal involvement in execution, and when the scope is sufficiently defined to allow the contractor to absorb ground and design risk without extreme uncertainty. The Yellow Book is more common where the employer retains some design involvement or where ground conditions are uncertain.

Is there an engineer under a Silver Book contract?

No independent engineer in the same sense as under the Red or Yellow Book. The employer appoints an employer's representative, but that representative does not perform the impartial certification and determination functions that characterise the engineer under the other FIDIC books. This concentrates more contractual authority with the employer.

Do development banks use the Silver Book for their projects?

Development banks generally prefer the Red or Yellow Book for publicly financed infrastructure, because the Silver Book's extreme risk transfer to the contractor can deter competitive bidding or lead to claims-heavy execution when scope is not fully defined. The Silver Book is more common in private finance and PPP transactions.