Nicole A. Mathys

Energy Abundance, Trade and Industry Location

We study the effect of countries’ energy abundance on trade and sector activity, conditional on sector’s energy intensity, using an unbalanced panel with 14 high-income countries from Europe, America and Asia, 10 broad sectors, and years 1970-1997. We find that (i) countries with large energy endowments have low energy prices, and are thus energy abundant both on micro and macro level. (ii) Energy abundant countries have a high level of energy embodied in exports relative to imports. (iii) Energy intensive sectors export from and (iv) have higher economic activity in energy abundant countries. (v) The trade and location effects increase with a sector’s exposure to international trade. In short, energy is a major driver for sector location through specialisation. We show that capital and energy are complements in the production function and use various controls in our analysis. The results give insights into delocalisation effects that may take place among rich countries with heterogeneous energy policy.

Global manufacturing SO2 emissions: does trade matter?

A growth-decomposition (scale, technique and composition effect) covering 62 countries and seven manufacturing sectors over the 1990–2000 period shows that trade, through reallocations of activities across countries, has contributed to a 2–3% decrease in world SO2 emissions. However, when compared to a constructed counterfactual no-trade benchmark, depending on the base year, trade would have contributed to a 3–10% increase in emissions. Finally adding emissions coming from trade-related transport activities, global emissions are increased through trade by 16% in 1990 and 13% in 2000, the decline being largely attributable to a shift of dirty activities towards cleaner countries.

Political Economy Aspects of Climate Change Mitigation Efforts

Regardless of the policies used to mitigate climate change, a positive and relatively high price of carbon will have to be established, with slow convergence across regions, leading to huge rents up to capture, way beyond those that have been fought over in the GATT-based international trading system. The paper explores the political-economy, feasibility and desirability implications of the two main alternatives, a carbon tax and a cap-and-trade (CAT) system. Having the same concerns, CAT systems in the EU and the US have accounted for different outcomes in each case. Likely leakages under foreseeable carbon prices are estimated to be small and not of an order of magnitude justifying the special allowances sought across a wide spectrum of industries.

Trade and Climate Policies: Do Emissions from International Transport Matter?

This paper provides orders of magnitude of the importance of CO2 emissions from international freight transport activities under a variety of scenarios regarding trade and climate policies. It is based on a stylised multiregion, multisector CGE model that includes the four modes of international transport (air, water, road and rail) and where choices regarding the energy mix and transport modes have been endogeneised. A separate decomposition of emission changes into the well‐known scale, composition and technique effects is provided. Scale effects turn out to be roughly double in international transport than in exports, while technique effects are weaker due to less substitutability between energy inputs. As a result, international transport represents half of the world increase in global emissions when trade liberalisation is considered in isolation. When trade liberalisation is coupled with a carbon tax limited to rich countries, the change in international transport emissions represents roughly one‐eighth of the carbon leakage effect.

Trade, Technique and Composition Effects: What is Behind the Fall in World-Wide SO2 Emissions, 1990-2000?

Combining unique data bases on emissions with sectoral output and employment data, we study the sources of the fall in world-wide SO2 emissions and estimate the impact of trade on emissions. Contrarily to concerns raised by environmentalists, an emission-decomposition exercise shows that scale effects are dominated by technique effects working towards a reduction in emissions. A second exercise comparing the actual trade situation with an autarky benchmark estimates that trade, by allowing clean countries to become net importers of emissions, leads to a 10% increase in world emissions with respect to autarky in 1990, a figure that shrinks to 3.5% in 2000. Additionally, back-of-the-envelope calculations suggest that emissions related to transport are of smaller magnitude, roughly 3% in both periods. In a third exercise, we use linear programming to simulate extreme situations where world emissions are either maximal or minimal. It turns out that effective emissions correspond to a 90% reduction with respect to the worst case, but that another 80% reduction could be reached if emissions were minimal.

Special Issue on Energy Modelling: Introductory Article

Introduction to the special issue that we put together, with 8 contributions from energy modelling teams in Switzerland.

CO2 embedded in trade: trends and fossil fuel drivers

The amount of CO2 embedded in trade has substantially increased over the last decades. We study the trends and some drivers of the carbon content of trade over the period 1995-2009. Our main findings are the following. First, the mix of traded goods tends to have higher emission intensity than the average mix of final demand. Second, dirty countries tend to specialize in emission-intensive sectors. This finding suggests that trade liberalization may increase global emissions. Third, the share of goods produced in emission-intensive countries is rising, consequently increasing global emissions. Finally, we find that coal abundance is an important driver of net CO2 exports, and abundance increases exports. These findings highlight the importance of considering trade when designing CO2 reduction strategies. They also suggest that, if left unattended, continued growth in global trade will increase – not decrease – global CO2 emissions.

Chapter 10 On the Track of the World's Economic Center of Gravity

This chapter proposes a refined and updated measurement of the Worlds Economic Center of Gravity over the 1950–2008 period, based on historical data provided by Maddison (2010) and on the detailed grid data of the G-Econ (Nordhaus, 2006) database. The economic center of gravity is located in the vicinity of Iceland during the first three decades, and then heads strongly toward the East since 1980. Regarding geographic concentration, world production is less concentrated than population across the Earths surface, and becomes even less so over time. A new decomposition technique is proposed, which suggests a structural break at the end of the 1970s. Measures of R&D activity, education expenditures and literacy as growth related indicators depict a spatial pattern that is consistent with the Eastern shift of the world economic center of gravity.