Table of Contents

Environmental Taxation and Green Fiscal Reform

Environmental Taxation and Green Fiscal Reform

Theory and Impact

Critical Issues in Environmental Taxation series

Edited by Larry Kreiser, Soocheol Lee, Kazuhiro Ueta, Janet E. Milne and Hope Ashiabor

Against a backdrop of intense political interest it is more important than ever to explore the role of fiscal policy in achieving environmental sustainability. Environmental Taxation and Green Fiscal Reform skilfully explores the various ranges of environmental and energy policies needed for an environmentally sustainable future.

Chapter 9: Incentivizing technologic change in emissions trading systems: the case of excess supply

Stefan E. Weishaar

Subjects: economics and finance, environmental economics, public finance, environment, energy economics, energy policy and regulation, environmental law, law - academic, environmental law, tax law and fiscal policy, politics and public policy, environmental politics and policy


Economic activity is associated with greenhouse gas emissions and therefore affects climate change. One can address climate change by targeting energy production (e.g. renewable energy or shale gas), by reducing the emission intensity of the industry (e.g. through emissions trading or carbon taxes) and by inducing behavioural changes of consumers (e.g. building regulation, smart energy meters). While addressing all factors contributing to climate change makes intuitive sense, the policy instruments mutually affect each other. A high CO2 allowance price for example makes investments in renewable energy sources more attractive and, incentivizes home owners to invest in better insulation. In addition to supporting other climate change policy instruments, a high emission allowances price incentivizes companies to invest in technological innovation, research and development. It is this transformation of the economy that is expected to stem from emissions trading systems and is a declared objective of the European Emissions Trading System (EU ETS). Emissions trading systems are appealing because they reduce greenhouse gas emissions at the lowest cost. Covered entities with the lowest abatement cost invest in abatement technology. These ‘saved’ emissions can be sold to entities that have higher abatement costs. Investment in abatement technology is thus an integral part of emissions trading. A mismatch between supply and demand in a cap-and-trade emissions trading system is not a problem for reaching the determined environmental target – its environmental effectiveness is not harmed. It is only a problem if one strives to incentivize green investments.

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