Torstein Bye

Welfare Effects of Emission Taxes in Norway

The welfare effects of introducing taxes on emissions of carbon dioxide is analysed within an empirical general equilibrium model of the Norwegian economy. A CO2 tax regime where we aim at stabilising the CO2 emissions at the 1990 emission level in 2020 is compared to a reference scenario without such taxes. In the simulations introduction of CO2 taxes reduces gross domestic product, but increases net national real disposable income, private consumption and money metric utility. This difference in sign is due to a positive terms of trade effect, some of the CO2 taxes will be paid by foreigners through exports. The welfare effects differ from household to household depending on the composition of their total consumption. Poor households are less favourably affected than rich households, due to smaller budget shares for the rich households on consumer goods which imply relatively much CO2 emissions.

Soil degradation and economic development in Ghana

Soil erosion and soil mining are important environmental problems in many developing countries and may represent a considerable drag on economic development. The cost of soil degradation depends, however, not only on the productivity effects it has on agricultural growth, but also on how the agricultural sectors are linked to the rest of the economy. This article describes an integrated economy–soil-productivity model for Ghana, and through several simulated scenarios we calculate the drag on the Ghanaian economy of soil mining and erosion, and illustrate the effects of different policies aiming at a reduction in these environmental problems.