Environmental finance is a field within finance that employs market-based environmental policy instruments to improve the ecological impact of investment strategies. The primary objective of environmental finance is to regress the negative impacts of climate change through pricing and trading schemes. The field of environmental finance was established in response to the poor management of economic crises by government bodies globally. Environmental finance aims to reallocate a businesses resources to improve the sustainability of investments whilst also retaining profit margins.
A carbon tax is a tax levied on the carbon emissions from producing goods and services. Carbon taxes are intended to make visible the hidden social costs of carbon emissions. They are designed to reduce greenhouse gas emissions by essentially increasing the price of fossil fuels. This both decreases demand for goods and services that produce high emissions and incentivizes making them less carbon-intensive. When a fossil fuel such as coal, petroleum, or natural gas is burned, most or all of its carbon is converted to CO2. Greenhouse gas emissions cause climate change. This negative externality can be reduced by taxing carbon content at any point in the product cycle.
Climate change mitigation (or decarbonisation) is action to limit the greenhouse gases in the atmosphere that cause climate change. Climate change mitigation actions include conserving energy and replacing fossil fuels with clean energy sources. Secondary mitigation strategies include changes to land use and removing carbon dioxide (CO2) from the atmosphere. Costs of climate change mitigation are estimated at around 1% and 2% of GDP. Current climate change mitigation policies are insufficient as they would still result in global warming of about 2.7 °C by 2100, significantly above the 2015 Paris Agreement's goal of limiting global warming to below 2 °C.
Economic analysis of climate change is about using economic tools and models to calculate the magnitude and distribution of damages caused by climate change. It can also give guidance for the best policies for mitigation and adaptation to climate change from an economic perspective. There are many economic models and frameworks. For example, in a cost–benefit analysis, the trade offs between climate change impacts, adaptation, and mitigation are made explicit. For this kind of analysis, integrated assessment models (IAMs) are useful. Those models link main features of society and economy with the biosphere and atmosphere into one modelling framework. The total economic impacts from climate change are difficult to estimate. In general, they increase the more the global surface temperature increases.
William Dawbney Nordhaus is an American economist. He was a Sterling Professor of Economics at Yale University, best known for his work in economic modeling and climate change, and a co-recipient of the 2018 Nobel Memorial Prize in Economic Sciences. Nordhaus received the prize "for integrating climate change into long-run macroeconomic analysis".
The Stern Review on the Economics of Climate Change is a 700-page report released for the Government of the United Kingdom on 30 October 2006 by economist Nicholas Stern, chair of the Grantham Research Institute on Climate Change and the Environment at the London School of Economics (LSE) and also chair of the Centre for Climate Change Economics and Policy (CCCEP) at Leeds University and LSE. The report discusses the effect of global warming on the world economy. Although not the first economic report on climate change, it is significant as the largest and most widely known and discussed report of its kind.
Dale Weldeau Jorgenson was an American economist who served as the Samuel W. Morris University Professor at Harvard University. An influential econometric scholar, he was famed for his work on the relationship between productivity and economic growth, the economics of climate change, and the intersection between economics and statistics. Described as a "master" of his field, he received the John Bates Clark Medal in 1971, and was described as a worthy contender for the Nobel Memorial Prize in Economic Sciences.
A low-carbon economy (LCE) is an economy which absorbs as much greenhouse gas as it emits. Greenhouse gas (GHG) emissions due to human activity are the dominant cause of observed climate change since the mid-20th century. There are many proven approaches for moving to a low-carbon economy, such as encouraging renewable energy transition, energy conservation, electrification of transportation, and carbon capture and storage. An example are zero-carbon cities.
The Climate Change Committee (CCC), originally named the Committee on Climate Change, is an independent non-departmental public body, formed under the Climate Change Act (2008) to advise the United Kingdom and devolved Governments and Parliaments on tackling and preparing for climate change. The Committee provides advice on setting carbon budgets, and reports regularly to the Parliaments and Assemblies on the progress made in reducing greenhouse gas emissions. Notably, in 2019 the CCC recommended the adoption of a target of net zero greenhouse gas emissions by the United Kingdom by 2050. On 27 June 2019 the British Parliament amended the Climate Change Act (2008) to include a commitment to net zero emissions by 2050. The CCC also advises and comments on the UK's progress on climate change adaptation through updates to Parliament.
The social cost of carbon (SCC) is the marginal cost of the impacts caused by emitting one extra tonne of carbon emissions at any point in time. The purpose of putting a price on a tonne of emitted CO2 is to aid policymakers or other legislators in evaluating whether a policy designed to curb climate change is justified. The social cost of carbon is a calculation focused on taking corrective measures on climate change which can be deemed a form of market failure. The only governments which use the SCC are in North America. The Intergovernmental Panel on Climate Change suggested that a carbon price of $100 per tonne of CO2 could reduce global GHG emissions by at least half the 2019 level by 2030.
Carbon pricing is a method for governments to address climate change, in which a monetary cost is applied to greenhouse gas emissions in order to encourage polluters to reduce the combustion of coal, oil and gas – the main driver of climate change. The method is widely agreed to be an efficient policy for reducing greenhouse gas emissions. Carbon pricing seeks to address the economic problem that emissions of CO2 and other greenhouse gases (GHG) are a negative externality – a detrimental product that is not charged for by any market.
Carbon leakage a concept to quantify an increase in greenhouse gas emissions in one country as a result of an emissions reduction by a second country with stricter climate change mitigation policies. Carbon leakage is one type of spill-over effect. Spill-over effects can be positive or negative; for example, emission reductions policy might lead to technological developments that aid reductions outside of the policy area. Carbon leakage is defined as "the increase in CO2 emissions outside the countries taking domestic mitigation action divided by the reduction in the emissions of these countries." It is expressed as a percentage, and can be greater or less than 100%. There is no consensus over the magnitude of long-term leakage effects.
Mark Kenneth Jaccard is a Canadian energy economist and author. He develops and applies models that assess sustainability policies for energy and material. Jaccard is a professor of sustainable energy in the School of Resource and Environmental Management (REM) at Simon Fraser University.
Integrated assessment modelling (IAM) or integrated modelling (IM) is a term used for a type of scientific modelling that tries to link main features of society and economy with the biosphere and atmosphere into one modelling framework. The goal of integrated assessment modelling is to accommodate informed policy-making, usually in the context of climate change though also in other areas of human and social development. While the detail and extent of integrated disciplines varies strongly per model, all climatic integrated assessment modelling includes economic processes as well as processes producing greenhouse gases. Other integrated assessment models also integrate other aspects of human development such as education, health, infrastructure, and governance.
Abatement cost is the cost of reducing environmental negatives such as pollution. Marginal cost is an economic concept that measures the cost of an additional unit. The marginal abatement cost, in general, measures the cost of reducing one more unit of pollution. Marginal abatement costs are also called the "marginal cost" of reducing such environmental negatives.
The economics of climate change mitigation is a contentious part of climate change mitigation – action aimed to limit the dangerous socio-economic and environmental consequences of climate change.
A climate change scenario is a hypothetical future based on a "set of key driving forces". Scenarios explore the long-term effectiveness of mitigation and adaptation. Scenarios help to understand what the future may hold. They can show which decisions will have the most meaningful effects on mitigation and adaptation.
Citizens' Climate Lobby (CCL) is an international grassroots environmental group that trains and supports volunteers to build relationships with their elected representatives in order to influence climate policy. The CCL is a registered 501(c)(4) with approximately $680,000 in revenue in the United States in 2018. Operating since 2007, the goal of CCL is to build political support across party lines to put a price on carbon, specifically a revenue-neutral carbon fee and dividend (CF&D) at the national level. CCL is supported by notable climate scientists James Hansen, Katharine Hayhoe, and Daniel Kammen. CCL's advisory board also includes former Secretary of State George P. Shultz, former US Representative Bob Inglis, actor Don Cheadle, and RESULTS founder Sam Daley-Harris.
Robert Stephen Pindyck is an American economist, Bank of Tokyo-Mitsubishi Professor of Economics and Finance at Sloan School of Management at Massachusetts Institute of Technology. He is also a research associate with the National Bureau of Economic Research and a Fellow of the Econometric Society. He has also been a Visiting Professor at Tel-Aviv University, Harvard University, and Columbia University.
The Dynamic Integrated Climate-Economy model, referred to as the DICE model or Dice model, is a neoclassical integrated assessment model developed by 2018 Nobel Laureate William Nordhaus that integrates in the neoclassical economics, carbon cycle, climate science, and estimated impacts allowing the weighing of subjectively guessed costs and subjectively guessed benefits of taking steps to slow climate change. Nordhaus also developed the RICE model, a variant of the DICE model that was updated and developed alongside the DICE model. Researchers who collaborated with Nordhaus to develop the model include David Popp, Zili Yang, and Joseph Boyer.
