Concession Duration

The duration of a concession contract is not arbitrary. It is the financial linchpin of the entire arrangement: the period over which the concessionaire must earn enough from revenue from users or availability payments to recover its capital investment, cover its operating costs, and earn an acceptable return for its equity investors. Setting the right term requires careful modelling of revenues, costs, and risk, and EU law imposes a principled limit on how long that term can be.

What is Concession Duration?

Article 18 of Directive 2014/23/EU establishes that concession durations must be limited. Specifically, for concessions lasting more than five years, the duration must not exceed the time a concessionaire could reasonably be expected to need to recoup its investments made in executing the works or services, together with a return on invested capital.

The directive does not set a fixed maximum in years. Instead, it requires a case-by-case assessment based on the specific investment profile of the concession. A motorway costing EUR 2 billion to build, with user revenues recovering costs over 30 years, may justify a 30-year term. A municipal car park concession requiring EUR 5 million of fit-out costs, with revenues recovering costs in 8 years, would not justify a 30-year term without explanation.

Common concession durations across European markets range from 10 to 35 years for infrastructure, with some particularly capital-intensive projects, such as large metro systems or long tunnels, extending to 40 years or more with regulatory justification. Social infrastructure concessions (schools, hospitals) under availability-based PPP models commonly run 25 to 30 years to align with asset lifecycle financing horizons.

The duration directly affects the demand risk profile. A longer concession gives the operator more time to recover from periods of low demand. A shorter concession concentrates revenue recovery in fewer years and increases the sensitivity of the financial model to demand fluctuations in any given period.

After the concession term expires, the right to exploit the works or service reverts to the contracting authority. The authority must then decide whether to re-tender, bring operations in-house, or extend the concession under the concession modification rules, which govern whether a term extension requires a new award process.

Why concession duration matters for bidders

The concession term is one of the most important variables in the financial model. A term that is too short relative to the capital invested creates an unsustainable repayment burden and may make the concession unbankable. A term that is too long relative to investment is vulnerable to legal challenge by unsuccessful bidders or by competition authorities.

Bidders should validate their proposed financial model against the Article 18 test: can the term be justified by the investment and required return? If the authority has pre-set a duration, bidders should assess whether that term is realistic for the investment expected. A duration that forces an unrealistically high return implies either very high user charges or a distorted risk model that will not survive lender scrutiny.

The duration also defines the horizon for lifecycle replacement obligations. Equipment replaced in year 15 of a 30-year concession must be planned and funded from day one. Missing lifecycle provision is one of the most common causes of financial stress in European concessions.

Example

A Belgian rail authority awards a concession for a new tram line. The concessionaire invests EUR 180 million in rolling stock and infrastructure, collects fares for 28 years, and then transfers the assets to the authority. The 28-year term was set by modelling fare revenues under base and downside scenarios to find the minimum term at which the concessionaire could service its project finance debt and earn an equity internal rate of return of 7 to 9 percent. A shorter term would have required higher fares or a public subsidy; a longer term would have been challenged as providing a windfall return.

Frequently Asked Questions

Can the concession duration be extended after award?

An extension that goes beyond what was provided for in the original contract documents requires assessment under the concession modification rules in Article 43 of Directive 2014/23/EU. Extensions to compensate for authority-caused delays or force majeure events are generally permissible. Extensions that simply give the concessionaire more revenue without justification require a new award procedure.

How does the concession duration affect the operating risk assessment?

Duration affects demand risk significantly. Over a very long term, virtually any infrastructure project will eventually recover its costs if it serves a real need. The operating risk requirement under Directive 2014/23/EU is assessed at the point of award, based on the real possibility that costs will not be recovered. A very long duration can reduce demand risk to a level where it is nominal rather than genuine, potentially affecting the concession classification.

What happens to assets at the end of the concession duration?

Asset transfer provisions in the concession contract govern what happens at expiry. Typically, the concessionaire transfers the works or infrastructure to the contracting authority in a defined condition (often defined by a handback standard specifying the state of repair required). The concessionaire must fund lifecycle replacement during the term to meet the handback standard. Failure to do so can result in handback deductions or liability at contract end.