Risk Allocation Design in Public-Private Partnerships — Learning from Failures: 'Who Bears Which Risk'

PPP/PFI project outcomes depend more on risk allocation design at the project planning stage than on post-launch operational capability. When risk allocation is properly designed, the structure can absorb problems during execution. Conversely, when risk allocation design is flawed, it remains unclear "who does what" when problems arise, and the situation deteriorates until project failure becomes inevitable.

Japan Economic Research Institute's analysis classifies PPP/PFI failures into five typologies:

Among these five, risk allocation failure is the most difficult to remedy. Modifying risk allocation post-contract requires bilateral agreement, which is structurally difficult to achieve when one party is already bearing losses.

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Project Overview

Thalasso Fukuoka was a thalassotherapy facility utilizing waste heat from Fukuoka City's coastal waste incineration plant. Planned as a PFI project, it opened in April 2002.

Structural Failure Analysis

Thalasso Fukuoka's failure stemmed from full demand risk transfer to the private sector.

Over-estimated demand forecast: The business plan projected substantial annual visitors, but actual numbers fell far short from the first year. Demand projections for thalassotherapy — a service with low public awareness — were excessively optimistic.

Structural risk allocation deficiency: Demand risk (visitor volume fluctuation risk) was effectively transferred entirely to the private operator. The contract contained no provisions for government response (compensation, condition modification) when visitor numbers fell below projections, structuring the operator to absorb losses alone.

Project finance dysfunction: According to Daiwa Institute of Research analysis, lenders only extended financing "within the range recoverable through the city's facility buyback price," failing to perform the role expected of project finance lenders — due diligence on business viability and operator capability.

Lessons from This Case

• Full private-sector demand risk transfer is particularly dangerous for novel business formats with low awareness
• Demand forecast validity should be independently verified by the procuring authority (municipality)
• Prerequisites for project finance to function properly (lender due diligence) should be confirmed

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Project Overview

Omihachiman City General Medical Center in Shiga Prefecture was Japan's first application of PFI to hospital operations.

Structural Failure Analysis

The Omihachiman failure resulted from governance failure due to core/non-core business separation combined with demand risk design error.

Core/non-core separation problem: In hospital PFI, medical services (core) are performed by the hospital while facility management, cleaning, food service, and medical accounting (non-core) are handled by the PFI operator. However, core and non-core hospital operations are tightly interdependent. Having different management entities for each generated decision-making delays, cost allocation disputes, and service quality inconsistencies.

Structural deficit: Deficits emerged from FY2006 (the opening year) onward with cumulating losses. The early termination penalty for the 30-year PFI contract was approximately ¥2 billion, but the city determined that paying this penalty was more economical than the ¥11 billion in projected losses over the remaining 27 years.

Lessons from This Case

• The scope of PFI-applicable operations must be carefully assessed (hospital-like operations with high specialization and difficult core/non-core separation are poor fits)
• Long-term PFI contract early termination conditions and penalties should be rationally designed at contract stage
• Mechanisms for early determination (monitoring) of whether post-opening deficits are structural or temporary are essential

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Mitsubishi UFJ Research & Consulting has theoretically analyzed the "demand risk transfer paradox" in PFI projects.

Structure of the Paradox

To maximize VFM (Value for Money), transferring as much risk as possible to the private sector appears rational. However, fully transferring demand risk produces paradoxical outcomes:

1. Reduced bidders: Under conditions of full demand risk assumption, operators capable of properly evaluating the risk avoid bidding
2. Increased risk premiums: Bidding operators add premiums (additional profit margins for risk) to project costs
3. Reduced VFM: Risk premium additions increase overall project costs, actually decreasing VFM
4. Decreased competition: Fewer bidders mean competition fails to function, further increasing costs

Strategies for Avoiding the Paradox

Design principles for circumventing this paradox include:

Risk-sharing introduction: Rather than fully transferring demand risk, share it within defined parameters. For example: "when demand falls below 80% of plan, the government compensates 50% of the shortfall."

Graduated risk transfer: During early project stages, the government bears most demand risk; the private sector's share gradually increases as operations stabilize.

Demand-linked payment design: Government payments to private operators are linked to demand (user numbers). When demand rises, operator revenue increases; when it falls, government payments decrease — an incentive-aligned structure.

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The Cabinet Office's Guidelines on Risk Allocation in PFI Projects establishes the following fundamental principles:

Principle 1: Risk should be borne by the party best positioned to manage it

"Manage" means having the ability to reduce the probability of risk occurrence or minimize losses when risks materialize.

• Design/construction risk → Private sector has management capability → Private sector bears
• Regulatory change risk → Government has information and influence → Government bears
• Demand fluctuation risk → Both parties' influence is mixed → Shared

Principle 2: Pre-agree response measures for risk materialization

Beyond merely allocating risk, pre-agreeing on "response actions when risk materializes" is crucial. Design not only "who bears the risk" but "what happens when the risk becomes reality."

Principle 3: Give risk allocation legal force as part of the contract

Risk allocation matrices should not remain "reference materials" but should be incorporated as contract annexes with legal binding force. Verbal agreements or memoranda-level documents will not function in disputes.

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Below are 8 risk categories that should be included in PPP/PFI risk allocation matrices, with allocation decision criteria.

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Park-PFI Risk Allocation

Park-PFI has smaller project scales than conventional PFI and a different risk structure. The following are Park-PFI-specific risks:

• Weather risk: Parks are outdoor facilities where weather directly impacts visitor numbers
• Seasonal fluctuation risk: Large visitor differentials between summer and winter
• Surrounding environment change risk: Development and transportation infrastructure changes near the park affect visitor attraction

For Park-PFI, designing usage fee calculation bases (the ratio between fixed and variable components) that account for these risks is the key practical consideration.

Small Concession Risk Allocation

Small Concession projects have sub-¥1 billion scale, requiring simplified risk allocation.

Over-detailing risk allocation matrices for small-scale projects raises entry barriers, reducing applicant numbers. A practical approach focuses on "clarifying allocation for critical risks (demand, force majeure, regulatory change) while addressing others through consultation rules."

Designated Manager System Risk Allocation

Under the Designated Manager System, gaps frequently emerge between formal risk allocation (as stated in agreements) and actual risk allocation (as practiced on the ground). Particularly when repair cost responsibility thresholds ("repairs under ¥X are the manager's responsibility") don't match reality, operator frustration accumulates, ultimately causing declination.

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Risk allocation design is the "insurance" of PPP/PFI projects. It goes unnoticed while projects proceed smoothly but reveals its critical importance only when problems arise. The lessons of Thalasso Fukuoka and Omihachiman City Hospital demonstrate that "underestimating risk allocation design produces irrecoverable outcomes."

Clearly defining "who bears which risk" and pre-agreeing "response measures when risks materialize" — this is the foundation supporting PPP/PFI project success.

PPP/PFI 7-Method Comparison

Comparing risk structures across 7 PPP/PFI methods. Decision criteria for method selection.

Public Facility Management Support Guide

Practical processes for PPP/PFI implementation, including risk allocation design methodology.

References

Examination of the 'Demand Risk Transfer Paradox' in PFI — Learning from PFI Failure Cases for PPP Success (2012)

Guidelines on Risk Allocation in PFI Projects (2021)

Hints for PPP Finance from the 'Failure' of Thalasso Fukuoka (2011)

Japan's First Hospital PFI Project: The Collapse in Just 5 Years (2012)