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How to set policy in the presence of uncertainty has been central in debates over climate policy. Concern about costs has motivated the proposal for a cap-and-trade program for carbon dioxide, with a "safety valve" that would mitigate against spikes in the cost of emission reductions by introducing additional emission allowances into the market when marginal costs rise above the specified allowance price level. We find two significant problems, both stemming from the asymmetry of an instrument that mitigates only against a price increase. One is that most important examples of price volatility in cap-and-trade programs have occurred not when prices spiked, but instead when allowance prices collapsed. Second, a single-sided safety valve may have unintended consequences for investment. We illustrate that a symmetric safety valve provides environmental and welfare improvements relative to the conventional one-sided approach.

Abstract A new possibility in coal contracting has arisen from the 1990 US Clean Air Act Amendments. Coal suppliers may sell sulfur dioxide emissions allowances together with their coal. This packaging of coal and sulfur dioxide emissions allowances is a new instance of the phenomenon known as bundling or tie-in in the economics of pricing and contracting. Building on Joskow's examination of coal suppliers and electric utilities, we examine the motivations for the bundling of coal and sulfur dioxide emissions allowances. We briefly discuss some economic and environmental effects of this bundling.

In 2014, the Portuguese government appointed a Commission for Environmental Tax Reform that formulated a carbon-tax proposal designed to achieve three dividends: to help Portugal meet the European Union's target for emissions reductions by 2030, to boost long-term employment and GDP above their pre-carbon-tax levels, and to strengthen public finances by lowering public indebtedness. A key feature of this proposal was a judicious set of mixed strategies to recycle all carbon-tax revenues back into the economy. In this note, we show how the carbon tax that the Portuguese Parliament eventually approved deviated from such guidelines, and ultimately failed to achieve the triple dividend. We argue that authorities need to quickly amend the existing legislation to avoid this misguided attempt turning into a missed opportunity to improve environmental, macroeconomic, and fiscal outcomes.

Abstract The deterioration of the woodfuel resource base in developing countries is being increasingly perceived as a problem of land management. Given this focus, the economics of natural resource use can provide a framework appropriate for an integrated analysis of environmental and energy-related issues of biomass resource management. The resulting policy implications underscore the virtues involved in the trend towards privatization and commercialization in agriculture and land titling. The government's role in this process is to improve and reinforce the incentive system for a more efficient and environmentally benign utilization of natural resources, unless imbalances are pervasive and need to be redressed immediately.

Economists have studied various indicators of resource scarcity but largely ignored the phenomenon of “peaking” due to its connection to non-economic (physical) theories of resource exhaustion. I consider peaking from the economic point of view, where economic forces determine the shape of the equilibrium extraction path. Within that framework, I ask whether the timing of peak production reveals anything useful about scarcity. I find peaking to be an ambiguous indicator. If someone announced the peak would arrive earlier than expected, and you believed them, you would not know whether the news was good or bad. However, I also show that the traditional economic indicators of resource scarcity (price, cost, and rent) fare no better, and argue that previous studies have misconstrued the connection between changes in underlying scarcity and movements in these traditional indicators.

Abstract Western Europe is exceptionally dependent on imports for its energy supplies and accounts for about half the world's energy imports. Although the countries of the region have widely differing energy resources and a diversity of energy policies, they all share the fundamental policy objectives of reducing energy cost and, particularly, minimizing oil imports as well as diversifying sources. Although projections of future use are notoriously unreliable, there is a projected reliance upon imports in the year 2000 for over 50% of fossil fuel needs. Thus continued, firm programmes and policies are essential to meet this challenge.

Abstract The resource curse is sometimes associated with poor resource-rich countries. However, using panel evidence from the United States, we find that the resource curse is also prevalent in a wealthy resource-rich country. This study investigates the impact of oil resources on income inequality, with a particular focus on distinguishing between the effects from oil abundance (i.e. production) versus oil dependency (i.e. consumption). We observe contrasting non-monotonic outcomes from oil abundance in comparison to oil dependency. For oil abundance, states with low oil production will have less inequality if they increase oil production, and states with high oil production will have increased income inequality if they increase production. The opposite holds true for oil dependency. The findings suggest several channels of concern. For example, oil-rich states are more vulnerable to rent-seeking behaviour as oil production and oil revenues increase, which can adversely affect the income distribution gap. On the other hand, oil-dependent states are more likely to be affected by commodity price shocks which can increase income inequality.

To investigate how fuel economy is valued in the Indian car market, we compute the cost to Indian consumers of purchasing a more fuel-efficient vehicle and compare it to the benefit of lower fuel costs over the life of the vehicle. We use hedonic price functions for four market segments (petrol hatchbacks, diesel hatchbacks, petrol sedans, and diesel sedans) to compute 95 percent confidence intervals for the marginal cost to the consumer of an increase in fuel economy. We find that the associated present value of fuel savings falls within the 95 percent confidence interval for some specifications, in all market segments, for the years 2002 through 2006. Thus, we fail to consistently reject the hypothesis that consumers appropriately value fuel economy. When we reject the null hypothesis, the marginal cost of additional fuel economy exceeds the present value of fuel savings, suggesting that consumers may, in fact, be overvaluing fuel economy.