Tommy Lundgren

Environmental Policy Without Costs? A Review of the Porter Hypothesis

This paper reviews the theoretical and empirical literature connected to the so called Porter Hypothesis. That is, to review the literature connected to the discussion about the relation between environmental policy and competitiveness. According to the conventional wisdom environmental policy, aiming for improving the environment through for example emission reductions, do imply costs since scarce resources must be diverted from somewhere else. However, this conventional wisdom has been challenged and questioned recently through what has been denoted the “Porter hypothesis”. Those in the forefront of the Porter hypothesis challenge the conventional wisdom basically on the ground that resources are used inefficiently in the absence of the right kind of environmental regulations, and that the conventional neo-classical view is too static to take inefficiencies into account. The conclusions that can be made from this review is (1) that the theoretical literature can identify the circumstances and mechanisms that must exist for a Porter effect to occur, (2) that these circumstances are rather non-general, hence rejecting the Porter hypothesis in general, (3) that the empirical literature give no general support for the Porter hypothesis. Furthermore, a closer look at the “Swedish case” reveals no support for the Porter hypothesis in spite of the fact that Swedish environmental policy the last 15-20 years seems to be in line the prerequisites stated by the Porter hypothesis concerning environmental policy.

Abatement investments and green goodwill

This paper develops and estimates a dynamic model that links profits to green goodwill. Assuming that abatement investments generate green goodwill, and using data from the Swedish pulp industry, we are able to test the effects of green goodwill on firm level output price and profits. The results suggests that Swedish pulp plant output prices and profits may be positively related to changes in green goodwill. Furthermore, no evidence is found to support the existence of adjustment costs due to abatement investments.

Carbon prices and incentives for technological development.

There is concern that the carbon prices generated through climate policies are too low to create the incentives necessary to stimulate technological development. This paper empirically analyzes how the Swedish carbon dioxide (CO2) tax and the European Union emission trading system (EU ETS) have affected productivity development in the Swedish pulp and paper industry 1998-2008. A Luenberger total factor productivity (TFP) indicator is computed using data envelopment analysis. The results show that climate policy had a modest impact on technological development in the pulp and paper industry, and if significant it was negative. The price of fossil fuels, on the contrary, seems to have created important incentives for technological development. Hence, the results suggest that the carbon prices faced by the industry through EU ETS and the CO2 tax have been too low. Even though the data for this study is specific for Sweden, the models and results are applicable internationally. When designing policy to mitigate CO2 emissions, it is vital that the policy creates a carbon price that is high enough - otherwise the pressure on technological development will not be sufficiently strong.

The Economics of Biofuels

Biofuels are increasingly regarded as energy sources with the potential to solve diverse problems related to serious concerns, including climate change, environmental degradation, energy supply, and energy security. Here we examine biofuels, primarily biofuels used for transportation (e.g., ethanol and biodiesel), through the lens of modern resource economics and address fundamental questions, such as: Why biofuels? We then review some of the relevant literature and present a framework for analysis drawn mainly from the green accounting literature. The literature reviewed indicates that the effects of policies promoting conversion from fossil fuels to biofuels do not necessarily promote welfare. Our theoretical framework provides indications of possible reasons for this. Based on findings obtained using the framework we propose policies that not only penalize emissions of CO 2 from all sources, but also stimulate biomass growth. Finally, we identify issues for further research.

A MICROECONOMIC MODEL OF CORPORATE SOCIAL RESPONSIBILITY

This paper explores the economic mechanisms behind corporate social responsibility (CSR) in a microeconomic model of the firm. The studys motivation is to shed light on the potential causes of the observed phenomena of voluntary over-compliance among firms. We investigate how assumptions about costs and benefits affect CSR behavior through a stock of goodwill capital. In optimum, the firm must balance marginal costs and benefits of investing in CSR. We characterize the equilibrium and examine comparative statics and dynamics from a parameterized model. Finally, we link some of the models results to the empirical literature on CSR.

A flexible specification of adjustment costs in dynamic factor demand models

This paper proposes a flexible form of adjustment cost function. An empirical illustration shows that the flexible form can detect both convex and non-convex adjustment costs. Furthermore, the flex ...

Environmental incidents and firm value–international evidence using a multi-factor event study framework

Event study methodology is used to analyse whether bad news in the form of Environmental (EV) incidents affect firm value negatively. An international sample of firms with EV incidents is studied. It is found that EV incidents are generally associated with the loss of value. For European firms, the loss is statistically significant and the magnitude of the abnormal returns should be of economic significance to corporations and investors. The results are not sensitive to multiple variations in methodology, including the use of international versions of the market model as well as of multi-factor models of the Fama–French type. Results are also robust to different parametric and nonparametric test statistics.

Assessing the welfare effects of promoting biomass growth and the use of bioenergy

Using a growth model that accounts for environmental and climate externalities, we take a closer look at the welfare effects of promoting biomass growth and the use of bioenergy, and especially the role of carbon neutrality. As an illustration, a hypothetical intensive forest cultivation project is simulated. Costs and benefits of the project show that only determining the postive effects of promoting biomass growth and the use of bioenergy, such as substitution away from fossil fuels and carbon sequestration is not sufficient. But more importantly, to achieve a balanced measure of the effects on the climate, we must also incorporate all carbon emissions that are associated with bioenergy. Not doing so will over-estimate the positive climate effects of increasing the use of bioenergy.

Productivity: Should We Include Bads?

This paper studies the interaction between economic and environmental performance. Applying the directional output distance function approach, the purpose is to compare estimates of Luenberger total factor productivity indicators, including and excluding bad outputs. Specifically, based on unique firm level data from Swedish manufacturing covering the period 1990 to 2008, we explore to what extent excluding bad outputs leads to erroneous productivity measurement. The main conclusion is that bad outputs should not only be included in the estimations, but also reduction in bad outputs should be credited. From this point of view the directional output distance function approach and the Luenberger indicator serves as an appropriate basis of productivity measurement.

Climate Policy and Profit Efficiency

As widely recognized, human mankind stands before the most challenging problem of preventing anthropogenic climate change. As a response to this, the European Union advocates an ambitious climate policy mix. However, there is no consensus concerning the impact of stringent environmental policy on firms’ competitiveness and profitability. From the traditional ‘static’ point of view there are productivity losses to be expected. On the other hand, the so called Porter hypothesis suggests the opposite; i.e., due to ‘dynamic’ effects, ambitious climate and energy policies within the EU could actually be beneficial to firms in terms of enhanced profitability and competitiveness. Based on Sweden’s manufacturing industry, our main purpose is to specifically assess the impact of the CO2 tax scheme of Sweden on firms’ profit efficiency. The empirical methodology is based on stochastic frontier estimations and, in general, the results suggest we can neither reject nor confirm the Porter hypothesis across industry sectors. Therefore, we do not generally confirm the argument of stringent environmental policies having positive dynamic effects that potentially offset costs related to environmental policy.