Regulating an externality-generating public utility: A multi-dimensional screening approach

In this paper, I present a monopoly screening model in which a firm holds private information on fixed abatement costs. Because of the nature of the optimal contracts, bunching is never optimal even with ‘n’ distinct types. A characterization of full and limited information solutions is offered and it is shown that the design standards alone determine the value of an information rent. The variable charge is completely free of any marginal information costs. This allows the variable charge to track marginal damages and thereby ensures that marginal social costs are covered. A fixed charge implements the optimal solution.     

Additionality When REDD Contracts Must be Self-Enforcing

This paper examines self-enforcing contracts as a financial mechanism for reducing carbon emissions from deforestation and forest degradation when the opportunity cost of the land (i.e., landholder type) is private information and is imperfectly correlated over time (i.e., partially persistent types). Because self-enforcement limits the feasible incentives, the conservation levels are constrained by the surplus created. Regardless of the degree of persistence of such opportunity costs across contracting periods, a first-best self-enforcing contract can deliver “additional” carbon sequestration beyond the business as usual scenario only if the value of forest conservation is sufficiently high. Otherwise, self-enforcing contracts can induce some, suboptimal level of carbon sequestration. The degree of persistence of opportunity costs across periods does not affect the amount of total payments provided in the optimal menu of contracts, but greater persistence of opportunity cost types leads to contracts that feature more of the total payment as a bonus in contracts for landholders with a high opportunity cost for their land and more of the total payment as an upfront fixed payment for landholders with a low opportunity cost.     

THE USE OF PPP ARRANGEMENTS IN STREET LIGHTING: A WIN‐WIN OPTION?

Street lighting is a classic example of a public good, and governments are extensively involved in its provision. Adequate lighting facilitates both car traffic and personal safety while improving an urban area's character. However, many systems are mismanaged and obsolete, incurring high energy costs and emissions with relatively low lighting quality. Public authorities facing budget constraints often find retrofitting old street‐lighting systems challenging. They have two options: either direct in‐house, public‐authority renovation or contracting with a private company through a public–private partnership (PPP). Although private‐sector‐participation approaches vary, most public authorities can now enter into a street‐light modernization PPP agreement. That can be a win‐win option for both the public and private sectors. The upfront investment is small and operational expenses outweigh capital expenses, generating lower payback periods and energy‐cost reduction with light‐emitting diode (LED) technology. Little public expenditure is necessary when private partners are compensated via shared energy savings. We analyze the Detroit street‐light PPP – the United States’ first – and find that PPPs are practical for retrofitting US street lights and in other countries where they are antiquated.     

Dynamic yardstick mechanisms

This paper shows that the inability of principals to commit to long-term contracts is irrelevant when dealing with several agents whose private information is correlated. This sharply contrasts with the dynamics of contracting without such correlation. The paper also explores what limitations on yardstick mechanisms can justify the use of long-term contracts. We found that the inability of a principal to commit not to renegotiate long-term contracts is without consequence even if there is a bound on transfers that an agent can be asked to pay. In contrast, short-term contracting fails to implement the commitment solution with constraints on transfers. Second, absent current yardstick, the possibility of using correlated mechanisms in the future allows the principal to implement the first-best with a renegotiation-proof long-term contract whereas this cannot be achieved with short-term contracting.     

Negative Externalities and Evolutionary Implementation

We model externality abatement as an implementation problem. A social planner would like to ensure efficient behaviour among a group of agents whose actions are sources of externalities. However, the planner has limited information about the agents' preferences, and is unable to distinguish individual agents except through their action choices. We prove that if a concavity condition on aggregate payoffs is satisfied, the planner can guarantee that efficient behaviour is globally stable under a wide range of behaviour adjustment processes by administering a variable pricing scheme. Through a series of applications, we show that the concavity condition is naturally satisfied in settings involving negative externalities. We conclude by contrasting the performance of the pricing mechanism with that of a mechanism based on direct revelation and announcement dependent forcing contracts.     

Ex post adaptations and hybrid contracts in software development services

We follow the recent literature on ex post adaptations in procurement and argue that highly volatile specifications result in multiple variations of fixed price (FP) and time and materials (T&M) contracts. Specifically, placing a cap on specification change in FP contracts prevents specification volatility, similar to the way that placing a cap on the price in T&M contracts prevents price escalation. We argue that these hybrid mechanisms are particularly important in software development contracting, a new critical business capability involving frequent and costly ex post adaptations to specification change. The level of completeness in these contractual archetypes is hypothesized to be determined by contracting costs and benefits, where costs are related to project uncertainty and benefits are related to the likelihood of vendor opportunism. We test this hypothesis with a unique data set of 270 software development contracts entered into by a leading international bank. The analysis confirms the existence of multiple hybrid contracts that mitigate both price escalation and specification volatility. It also shows that contracting costs and benefits explain more variance in contract choice when these hybrids are included, uncovering the detailed mechanisms used to curb opportunism when the vendor is less familiar to the client.     

Patterns of multi-agent land conservation: Crowding in/out,agglomeration, and policy

Private agents make large contributions to networks of conserved land, but little is known about how private agents’ decisions might be altered by government actions. This paper explores the impact of public conservation and public policy on the quantity and configuration of private land conservation and the extent to which the social optimum is reached. Because land conservation benefits often have thresholds and spatial characteristics, we consider the impact of different land conservation benefit functions on the patterns of conservation created by the interaction of private and public agents. We find that public conservation crowds private conservation in or out depending on whether marginal conservation benefits increase or decrease with total acreage, and crowding out is mitigated by the presence of budget constraints. We show how land conservation agents might interact strategically in space depending on preferences over fragmentation, and we explore that spatial strategic interaction in a case with a regional land trust and a case with hot-spot parcels. We identify when government policies, such as agglomeration bonuses and mitigating coordination costs, are most likely to increase the social benefits provided by private land conservation agents.     

The Optimal Timing of Procurement Decisions and Patent Allocations*

In a patent race, social incentives and private incentives may sometimes coincide and at other times diverge – too many researchers remain in the race. If the social planner cannot determine what stage the researchers have achieved, this informational constraint can result in a socially suboptimal outcome. We construct a mechanism in which a planner exploits the researchers' private information to determine when and to whom to allocate rights to pursue the final prize. This mechanism does not require any payments and, therefore, will not distort earlier investment incentives. It is solvable by the iterative elimination of dominated strategies.     

Market power,private information,and the optimal scale of pollution permit markets with application to North Carolina's Neuse River

We extend the analysis of optimal scale in pollution permit markets by allowing for both market power and private information. We characterize the total costs (abatement costs and damages) under market power and private information and compare them to total costs under competition. It is possible for both market power and private information to lead to lower total costs than competition, but generally the differences between the three market structures will be small. We also conduct an optimal scale analysis of nitrogen pollution from waste water treatment plants (WWTP) into North Carolina's Neuse River System. An economic model of damages and abatement costs is integrated with a hydro-ecological model of nitrogen flow through the Neuse. We determine the optimal number of trading zones and allocate the WWTP into these zones. Under the most likely regulatory scenario, we find cost savings of 1.55 million dollars per year under the optimal market design relative to the typical 303(d) regulation in which the WWTP are not allowed to trade.     

Quality Competition and Social Welfare in Markets with Partial Coverage: New Results*

We use a vertical product differentiation model under partial market coverage to study the social welfare optimum and duopoly equilibrium when convex costs of quality provision are either fixed or variable in terms of production. We show the following new results. First, under fixed costs, the social planner charges a uniform price for the single variant that just covers costs of quality provision. Like the duopoly equilibrium, this socially optimal pricing entails a partially uncovered market, but a smaller share of the market is served compared with the duopoly equilibrium. Second, for the variable cost case, it is socially optimal to provide both high‐ and low‐quality variants, but market shares need not be equal. This differs from the result in fully covered markets. Third, in the duopoly equilibrium, the quality spread is too wide under variable costs relative to the social optimum. Under fixed costs, the duopoly produces two variants, but quality is too low relative to the social optimum, which has only one variant.     

Renewable resource management, user heterogeneity, and the scope for cooperation

Cooperation can increase the efficiency of commonly-owned renewable resource use. However, received knowledge is that, absent side payments, cooperative solutions are more difficult to achieve the less homogenous the agents involved. We revisit this claim by analyzing how differences in the opportunity costs of resource harvesting affect the scope for Pareto-improving contracts, where contracting is with respect to the type of technology used. We find that the scope for cooperation is largest for intermediate levels of heterogeneity.     

A transaction cost model of contract choice: The case of petroleum exploration

The growing literature on transaction costs posits that the structures of contracts involving exchange under uncertainty are influenced by the costs incurred by the contracting parties prior to, as well as after, a contract is signed. This research investigates the contractual responses to the substantial uncertainty attending the exchange of rights to underground petroleum deposits. It develops a transaction cost model to explain the payment structure found in these contracts. The model identifies the major transaction costs associated with the payment types used in oil and gas exploration contracts, including ex ante measurement costs and ex post production inefficiencies, and explains their effect on contract structure. Testable implications concerning variations in the payment structure of petroleum exploration contracts are generated and tested using data from private oil and gas mineral rights leasing contracts in four western states. The study has direct public policy significance in that it delineates the implications of different payment structures of oil and gas leasing contracts. These implications can be used to evaluate proposals to reform federal oil and gas leasing policies. In addition, while there has been considerable analysis of federal offshore oil and gas leasing contracts, there has been a dearth of research on private onshore oil leasing practices. This study helps to fill this empirical void.     

DISTRIBUTING THE GAINS FROM TRADE WITH INCOMPLETE INFORMATION*

We argue that the incomplete information which the government has about domestic agents means that tariffs become an optimal instrument to protect them from import competition. Using a model where agents have private information about their endowments, we solve for the optimal government policy subject to the political constraint of ensuring Pareto gains from trade, the incentive compatibility constraint, and the government's budget constraint. We find that the optimal policy takes the form of nonlinear tariffs. These tariffs are never complete, in the sense of bringing prices back to their initial level, but always allow some individuals to be strictly better off than at the initial prices.     

Technology adoption under hidden information

We consider a firm where workers have pre-contractual private information regarding their cost of production. Before contracting takes place, the owner of the firm can adopt a new technology that reduces production costs for each type of worker. We show that technology adoption may have an adverse rent effect that counteracts the cost-reducing effect. This is the case whenever the new technology reduces the costs of more efficient types more strongly. Nevertheless, if the owner contracts directly with a worker (two-tier hierarchy), the cost-reducing effect always dominates. By contrast, if the firm has more hierarchical tiers such that contracting with the worker is delegated to a manager, the rent effect may prevail. Then, the owner does not adopt the new technology, even if it is costlessly available.     

On the robustness of laissez-faire

This paper considers a model economy in which agents are privately informed about their type: their endowments of various goods and their preferences over these goods. While preference orderings over observable choices are allowed to be correlated with an agent's private type, we assume that the planner/government is both uncertain about the nature of this joint distribution and unable to choose among multiple equilibria of any given social mechanism. We model the planner/government as having a maxmin objective in the face of this uncertainty.Our main theorem is as follows: Once we allow for this kind of uncertainty and assume no wealth effects in preferences, the uniquely optimal social contract is laissez-faire, in which agents trade in unfettered markets with no government intervention of any kind.     

Subscription Mechanisms for Network Formation

We analyze a model of network formation where the costs of link formation are publicly known but individual benefits are not known to the social planner. The objective is to design a simple mechanism ensuring efficiency, budget balance, and equity. We propose two mechanisms towards this end; the first ensures efficiency and budget balance but not equity. The second mechanism corrects the asymmetry in payoffs through a two-stage variant of the first mechanism. Journal of Economic Literature Classification Numbers: C71, C72, D20.     

Efficiency,access, and the mixed delivery of health care services

Universal health systems often rely on both pubic provision and contracting arrangements with private hospitals. This paper studies the optimal mix of public and private provision of health care services. We propose a model in which the regulator acts as athird-party payer, and aims to ensure universal access to treatment at minimal cost. Patients need one unit of medical services and differ in the severity of illness. A private and a public hospital are available. Under incomplete contracts, ownership affects the regulatory constraints and the power of managerial incentives. Only the private manager internalizes profits, and has incentives to reject costly patients and to exert effort in cost reduction. Contracting with the private hospital is optimal when managerial effort is relatively effective in reducing costs. By using the public hospital as a last resort provider, the regulator can ensure access, provide incentives to the private manager, and internalize part of the resulting cost savings. Imposing a no-dumping constraint on the private hospital reduces the power of incentives and is not always optimal.     

Revenue decentralization,central oversight and the political budget cycle: Evidence from Israel

This paper examines whether revenue decentralization and direct external financial supervision affect the incidence and strength of political budget cycles, using a panel of Israeli municipalities during the period 1999–2009. We find that high dependence on central government transfers – as reflected in a low share of locally raised revenues in the municipality's budget – exacerbates political budget cycles, while tight monitoring – exercised through central government appointment of external accountants to debt accumulating municipalities – eliminates them. We also find that this pattern is predominantly accounted for by development expenditures. These results suggest that political budget cycles can result from fiscal institutions that create soft budget constraints: that is, where incumbents and rational voters can expect that the costs of pre-election expansions will be partly covered later by the central government.     

Forward trading in exhaustible-resource oligopoly

We analyze oligopolistic exhaustible-resource depletion when firms can trade forward contracts on deliveries – a market structure relevant for some resource markets (e.g., storable pollution permits, hydro-based power pools) – and find that trading forwards can have substantial implications for resource depletion. We show that when firms’ initial resource-stocks are the same, the subgame-perfect equilibrium path approaches the perfectly competitive path as firms trade forwards frequently. But when the initial stocks differ, firms can credibly escape part of the competitive pressure of forward contracting. It is a unique feature of the resource model that equilibrium contracting and the degree of competition depends on resource endowments.     

Randomization, revelation, and redistribution in a Lerner world

Summary. If total social income is fixed and a social planner is uninformed of the utility representations of different individuals, then Lerner showed that the social optimum is to equally distribute income across individuals. We show that the planner by the use of randomization can in some circumstances induce individuals to reveal information about the curvature of their utility functions and then use the information to move away from equality on average. However, whether this is optimal depends in part on unobservable beliefs of the planner. These may be viewed as an aspect of the planner's ethical judgements or as something entirely arbitrary. Received: January 11, 2000; revised version: June 26, 2001