Building India: Infrastructure Economics
Public-Private Partnerships
How governments team up with private companies to build and run infrastructure, the main PPP models, and why many Indian PPPs ran into trouble.
A public-private partnership, or PPP, is an arrangement in which a private company builds, finances, runs or maintains infrastructure on behalf of the government, usually for a long period called a concession.
Common models
- Build-Operate-Transfer (BOT): the private firm builds the project, operates it for a set period, collects revenue such as tolls, then transfers it to the government.
- BOT-Annuity: the government pays the firm fixed annual amounts instead of the firm collecting tolls.
- Operation and maintenance contracts: the firm runs existing assets.
- Hybrid models: mixing government and private funding.
Why use PPPs?
- Private capital: governments can build more without paying everything upfront.
- Efficiency: private firms may build faster and cheaper if rewarded for performance.
- Lifecycle thinking: a firm that must maintain a road for 20 years has an incentive to build it well.
- Risk sharing: risks can be allocated to whoever is best able to manage them.
India’s PPP boom and bust
In the 2000s, India awarded many PPP projects, especially in highways and power. Many ran into trouble:
- Overoptimistic traffic forecasts: toll revenues fell short.
- Land acquisition delays held up construction.
- Aggressive bidding: firms bid too low to win contracts.
- Economic slowdown after 2011 reduced demand.
- Debt: many developers borrowed heavily, contributing to banks’ bad loans.
A 2015 committee led by Vijay Kelkar reviewed India’s PPP model and recommended better risk allocation and dispute resolution.
Lessons
- Allocate risks sensibly: governments are better placed to handle land acquisition; firms can handle construction.
- Realistic forecasts.
- Flexible renegotiation mechanisms.
- Strong institutions to manage contracts.
PPPs aren’t free money: users or taxpayers eventually pay through tolls, fees or annuities.
A developer builds a highway expecting 30,000 vehicles a day and borrows heavily. Traffic turns out to be 18,000. Toll revenue can't cover loan repayments, the developer defaults and the bank books a bad loan.
Private investors expect returns, paid ultimately by users through tolls or by taxpayers through annuities.
- PPPs involve private firms building, financing or operating public infrastructure.
- Models include BOT, annuity and hybrid arrangements.
- Many Indian PPPs struggled due to poor forecasts, land delays and debt.
- Sensible risk allocation and strong institutions are key.
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