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Tanneries present heavy environmental impacts due to air emissions. Specific quality objectives are fixed by European Directives concerning air and, in particular, volatile organic compounds. The purpose of this paper is to present a proposal for the management of air emissions with a view to achieve quality standards in the Italy's largest tannery district by means of a tradable emissions permits (TEPs) system.

A methodological approach is presented and analysed. The proposed system is based on the “bubble” configuration, which appears to be an effective and feasible application based on the total maximum daily load criterion, supported by the air quality standards or the environmental risk assessment (ERA) procedure.

The TEP system favours technological improvements in the reduction of emissions. The system may not provide a solution to the unpleasant odours deriving from the tanneries, but its application supported by ERA will make it possible to define the admissible levels of air pollution and improve the general state of air quality.

Although the study is not exhaustive and requires further investigation in the economic, legal, administrative and air pollution sectors, it does give the basic elements for a preliminary analysis. The evident lack of experimental data concerning weather and climatic features, intrinsic to exposure assessment, has been pointed out.

This study proposes a methodological pathway aimed at defining the system of tradable permits by verifying the existence and availability of the necessary data. The proposed TEP system can be extended to other homogeneous industrial districts with an appropriate selection of one or more critical parameters.

Besides organizational changes in the electricity supply industry there are growing concerns about environmental issues derived from the Kyoto Protocol for the reduction of greenhouse gas emissions as well as promoting renewable energies. The purpose of this paper is to address the source side emission trading impact on electricity prices in the competitive power market.

Various schemes are suggested and are being implemented to achieve this objective. It is expected that electricity price will increase due to imposition of emission taxes. This paper analyzes the impact of electricity prices in the competitive electricity markets having a uniform market clearing price mechanism.

It is found that the electricity prices depend on the system loading, generation mix, etc. at a particular hour. Various emission trading instruments are discussed with a special emphasis on the European market.

Block bidding of the suppliers is considered whereas the demand is assumed to be inelastic.

The emission trading impacts are analyzed on a simple example.

The purpose of this study is to analyze the power market and greenhouse gas (GHG) emission effects of the joint Norwegian–Swedish tradable green certificates (TGCs) market, which is established to support investments according to a 26.4 TWh increased annual renewable electricity generation (REG) by 2020.

The study applies an energy system model with high granularity in time and space, and detailed power system data for the Nordic countries, Germany, The Netherlands and UK.

The results show that the TGC scheme will cause a 8.7-9.3 /MWh reduction in average electricity prices in the Nordic countries. The price decrease will to a limited extent pass through to Germany, The Netherlands and UK. When assuming a low carbon price level, the new REG will reduce annual GHG emissions by 10.9 Mtonnes in 2020, primarily through substitution of German natural gas power. A sensitivity analysis shows that the GHG emission effect of the TGCs is highly sensitive to changes in the carbon price. Investment levels up to a 90 TWh increased REG per year are found to cause increasing GHG emission reductions.

The study results signal the importance of taking the TGC policy into account in decision-making processes in the Northern European power system, in particular for market actors in the Nordic area. The authors conclude that the Nordic countries potentially can play a vital role in a future Northern European low carbon power system through export of green balancing power, substitution of thermal power and reduced GHG emissions from the Northern European power sector.