Tag: environmental externalities

At the annual World Economic Forum (WEF) in Davos, Switzerland, world political and business leaders are meeting to discuss pressing economic issues of the day. This year, one of the key themes is climate change and “how to save the planet”.

The approaches of leaders to the climate crisis, however, differ enormously. At the one extreme there are those who deny that emissions have caused climate change, or who reluctantly acknowledge climate change but think that governments need to do nothing and that technological advances in green energy and transport will be sufficient to curb global warming. This has been the approach of President Trump, President Bolsonaro of Brazil and Prime Minister Scott Morrison of Australia. They may claim to support the general goals of reducing greenhouse gases, but are keen to protect their coal and oil industries and, in the case of Brazil, to continue cutting down the Amazon rain forest to support mining, ranching and the growing of crops.

At his speech at the WEF, President Trump said that he supported the initiative to plant one trillion trees worldwide to act as a carbon sink. However, he gave no details of just what the nature of the support would be. Would there be subsidies or tax breaks, for example, for landowners to plant trees? In the meantime, his administration has relaxed regulations to curb air and water pollution. And he has withdrawn the USA from the Paris climate agreement.

Other leaders, urged on by activists, such as Greta Thunberg, have talked about tougher action to tackle emissions. Countries such as Canada, Norway and the EU countries have adopted a number of initiatives. Policies range from taxing emissions, capping/regulating emissions with penalities for those breaching the limits, tradable permits, subsidising green alternatives, setting local emissions targets with incentives for meeting them, investing in green infrastructure such as roadside charging points for electric vehicles, making environmental education part of a national curriculum, investing in public transport, and so on. But, say, activists, only large-scale measures that truly recognise the scale of the climate emergency will be sufficient.

The year starts with climate being addressed at Davos; it ends with the annual Conference of the Parties (COP26) to the United Nations Framework Convention on Climate Change (UNFCCC). This year it will be in Glasgow. There is much hope pinned on this conference, given the growing realisation of the effects of climate change, from bush fires in Australia, to floods in Indonesia and other parts of southeast Asia, to more extreme hurricanes/typhoons, to rapidly melting glaciers and retreating sea ice, to rising sea levels, to crop failures and the displacement of humans and the destruction of wildlife and habitat.

COP25 in Madrid made little progress; it is hoped that COP26 will be much more successful. Sir David Attenborough has warned that the world faces a ‘climate crisis moment’. He hopes that the world will be ready to take much stronger action at COP26.

But there remains the fundamental economic problem of the tragedy of the commons. As long as the atmosphere and other parts of the environment are free to ‘use’ to pollute, and as long as the costs of doing so are borne largely by people other than the direct polluters, the market will fail to provide a solution. Australia’s bush fires can be directly attributed to climate change and climate change is exacerbated by coal-fired power stations. But Australia’s use of coal as a power source is only a tiny contributor to global climate change. Presumably, the Australian government would rather get a ‘free ride’ off other countries’ policies to cut emissions rather than bearing the economic cost of reducing coal-fired generation itself for little gain in terms of reduced global emissions.

However, people are not entirely selfish. Many are willing to make personal sacrifices to lead a more environmentally sustainable life. Many people, for example, are choosing electricity tariffs that are slightly higher but where the electricity is generated with zero carbon emissions. Firms have shown a readiness to respond to demands from their consumers for more sustainable products.

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Questions

  1. Draw a diagram to show how the external costs of carbon emissions cause a more than socially optimal output of products emitting CO2.
  2. What is meant by the ‘tragedy of the commons’? Give some environmental examples.
  3. Discuss possible solutions to the tragedy of the commons.
  4. Why was COP25 generally regarded as a failure?
  5. Identify four possible policies that governments could adopt to reduce carbon emissions and discuss their relative advantages and disadvantages.
  6. Are meetings such as the annual World Economic Forum meetings at Davos of any benefit other than to the politicians attending? Explain.

There is increasing recognition that the world is facing a climate emergency. Concerns are growing about the damaging effects of global warming on weather patterns, with increasing droughts, forest fires, floods and hurricanes. Ice sheets are melting and glaciers retreating, with consequent rising sea levels. Habitats and livelihoods are being destroyed. And many of the effects seem to be occurring more rapidly than had previously been expected.

Extinction Rebellion has staged protests in many countries; the period from 20 to 27 September saw a worldwide climate strike (see also), with millions of people marching and children leaving school to protest; a Climate Action Summit took place at the United Nations, with a rousing speech by Greta Thunberg, the 16 year-old Swedish activist; the UN’s Intergovernmental Panel on Climate Change (IPCC) has just released a report with evidence showing that the melting of ice sheets and rising sea levels is more rapid than previously thought; at its annual party conference in Brighton, the Labour Party pledged that, in government, it would bring forward the UK’s target for zero net carbon emissions from 2050 to 2030.

Increasingly attention is focusing on what can be done. At first sight, it might seem as if the answer lies solely with climate scientists, environmentalists, technologists, politicians and industry. When the matter is discussed in the media, it is often the environment correspondent, the science correspondent, the political correspondent or the business correspondent who reports on developments in policy. But economics has an absolutely central role to play in both the analysis of the problem and in examining the effectiveness of alternative solutions.

One of the key things that economists do is to examine incentives and how they impact on human behaviour. Indeed, understanding the design and effectiveness of incentives is one of the 15 Threshold Concepts we identify in the Sloman books.

One of the most influential studies of the impact of climate change and means of addressing it was the study back in 2006, The Economics of Climate Change: The Stern Review, led by the economist Sir Nicholas Stern. The Review reflected economists’ arguments that climate change represents a massive failure of markets and of governments too. Firms and individuals can emit greenhouse gases into the atmosphere at no charge to themselves, even though it imposes costs on others. These external costs are possible because the atmosphere is a public good, which is free to exploit.

Part of the solution is to ‘internalise’ these externalities by imposing charges on people and firms for their emissions, such as imposing higher taxes on cars with high exhaust emissions or on coal-fired power stations. This can be done through the tax system, with ‘green’ taxes and charges. Economists study the effectiveness of these and how much they are likely to change people’s behaviour.

Another part of the solution is to subsidise green alternatives, such as solar and wind power, that provide positive environmental externalities. But again, just how responsive will demand be? This again is something that economists study.

Of course, changing human behaviour is not just about raising the prices of activities that create negative environmental externalities and lowering the prices of those that create positive ones. Part of the solution lies in education to make people aware of the environmental impacts of their activities and what can be done about it. The problem here is that there is a lack of information – a classic market failure. Making people aware of the consequences of their actions can play a key part in the economic decisions they make. Economists study the extent that imperfect information distorts decision making and how informed decision making can improve outcomes.

Another part of the solution may be direct government investment in green technologies or the use of legislation to prevent or restrict activities that contribute to global warming. But in each case, economists are well placed to examine the efficacy and the costs and benefits of alternative policies. Economists have the tools to make cost–benefit appraisals.

Economists also study the motivations of people and how they affect their decisions, including decisions about whether or not to take part in activities with high emissions, such air travel, and decisions on ‘green’ activities, such as eating less meat and more vegetables.

If you are starting out on an economics degree, you will soon see that economists are at the centre of the analysis of some of the biggest issues of the day, such as climate change and the environment generally, inequality and poverty, working conditions, the work–life balance, the price of accommodation, the effects of populism and the retreat from global responsibility and, in the UK especially, the effects of Brexit, of whatever form.

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Questions

  1. Explain what is meant by environmental externalities.
  2. Compare the relative merits of carbon taxes and legislation as means of reducing carbon emissions.
  3. If there is a climate emergency, why are most governments unwilling to take the necessary measures to make their countries net carbon neutral within the next few years?
  4. In what ways would you suggest incentivising (a) individuals and (b) firms to reduce carbon emissions? Explain your reasoning.
  5. For what reasons are the burdens of climate changed shared unequally between people across the globe?

The EU has recently signed two trade deals after many years of negotiations. The first is with Mercosur, the South American trading and economic co-operation organisation, currently consisting of Brazil, Argentina, Uruguay and Paraguay – a region of over 260m people. The second is with Vietnam, which should result in tariff reductions of 99% of traded goods. This is the first deal of its kind with a developing country in Asia. These deals follow a recent landmark deal with Japan.

At a time when protectionism is on the rise, with the USA involved in trade disputes with a number of countries, such as China and the EU, deals to cut tariffs and other trade restrictions are seen as a positive development by those arguing that freer trade results in a net gain to the participants. The law of comparative advantage suggests that trade allows countries to consume beyond their production possibility curves. What is more, the competition experienced through increased trade can lead to greater efficiency and product development.

It is estimated that the deal with Mercosur could result in a saving of some €4bn per annum in tariffs on EU exports.

But although there is a net economic gain from greater trade, some sectors will lose as consumers switch to cheaper imports. Thus the agricultural sector in many parts of the EU is worried about cheaper food imports from South America. What is more, increased trade could have detrimental environmental impacts. For example, greater imports of beef from Brazil into the EU could result in more Amazonian forest being cut down to graze cattle.

But provided environmental externalities are internalised within trade deals and provided economies are given time to adjust to changing demand patterns, such large-scale trade deals can be of significant benefit to the participants. In the case of the EU–Mercosur agreement, according to the EU Reporter article, it:

…upholds the highest standards of food safety and consumer protection, as well as the precautionary principle for food safety and environmental rules and contains specific commitments on labour rights and environmental protection, including the implementation of the Paris climate agreement and related enforcement rules.

The size of the EU market and its economic power puts it in a strong position to get the best trade deals for its member states. As EU Trade Commissioner, Cecilia Malmström stated:

Over the past few years the EU has consolidated its position as the global leader in open and sustainable trade. Agreements with 15 countries have entered into force since 2014, notably with Canada and Japan. This agreement adds four more countries to our impressive roster of trade allies.

Outside the EU, the UK will have less power to negotiate similar deals.

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Questions

  1. Draw a diagram to illustrate the gains for a previously closed economy from engaging in trade by specialising in products in which it has a comparative advantage.
  2. Distinguish between trade creation and trade diversion from a trade deal with another country or group of countries.
  3. Which sectors in the EU and which sectors in the Mercosur countries and Vietnam are likely to benefit the most from the respective trade deals?
  4. Which sectors in the EU and which sectors in the Mercosur countries and Vietnam are likely to lose from the respective trade deals?
  5. Are the EU–Mercosur and the EU–Vietnam trade deals likely to lead to net trade creation or net trade diversion?
  6. What are the potential environmental dangers from a trade deal between the EU and Mercosur? To what extent have these dangers been addressed in the recent draft agreement?
  7. Will the UK benefit from the EU’s trade deals with Mercosur and Vietnam?

In 2015, at the COP21 climate change conference in Paris, an agreement was reached between the 195 countries present. The Paris agreement committed countries to limiting global warming to ‘well below’ 2°C and preferably to no more than 1.5°C. above pre-industrial levels. To do this, a ‘cap-and-trade’ system would be adopted, with countries agreeing to limits to their emissions and then being able to buy emissions credits to exceed these limits from countries which had managed to emit below their limits. However, to implement the agreement, countries would need to adopt a ‘rulebook’ about how the permitted limits would be applied, how governments would measure and report emissions cuts, how the figures would be verified and just how a cap-and-trade system would work.

At the COP24 meeting from 2 to 15 December 2018 in Katowice, Poland, nearly 14 000 delegates from 196 countries discussed the details of a rulebook. Despite some 2800 points of contention and some difficult and heated negotiations, agreement was finally reached. Rules for targeting, measuring and verifying emissions have been accepted. If countries exceed their limits, they must explain why and also how they will meet them in future. Rich countries agreed to provide help to poor countries in curbing their emissions and adapting to rising sea levels, droughts, floods and other climate-induced problems.

But no details have been agreed on the system of carbon trading, thanks to objections from the Brazilian delegates, who felt that insufficient account would be made of their country’s existing promises on not chopping down parts of the Amazon rainforest.

Most seriously, the measures already agreed which would be covered by the rulebook will be insufficient to meet the 2°C, let alone the 1.5°C, target. The majority of the measures are voluntary ‘nationally determined contributions’, which countries are required to submit under the Paris agreement. These, so far, would probably be sufficient to limit global warming to only around 3°C, at which level there would be massive environmental, economic and social consequences.

There was, however, a belief among delegates that further strong international action was required. Indeed, under the Paris agreement, emissions limits to keep global warming to the ‘well below 2°C’ level must be agreed by 2020.

Climate change is a case of severe market failure. A large proportion of the external costs of pollution are borne outside the countries where the emitters are based. This creates a disincentive for countries acting alone to internalise all these externalities through the tax system or charges, or to regulate them toughly. Only by countries taking an international perspective and by acting collectively can the externalities be seen as a fully internal problem.

Even though most governments recognise the nature and scale of the problem, one of the biggest problems they face is in persuading people that it is in their interests to cut carbon emissions – something that may become increasingly difficult with the rise in populism and the realisation that higher fuel and other prices will make people poorer in the short term.

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Questions

  1. To what extent can the atmosphere been seen as a ‘global commons’?
  2. What incentives might be given for business to make ‘green investments’?
  3. To what extent might changes in technology help businesses and consumers to ‘go green’?
  4. Why might international negotiations over tackling climate change result in a prisoner’s dilemma problem? What steps could be taken to tackle the problem?
  5. How would an emissions cap-and-trade system work?
  6. Investigate the Brazilian objections to the proposals for emissions credits. Were the delegates justified in their objections?
  7. What types of initiative could businesses take to tackle ‘supply chain emissions’?
  8. How could countries, such as the USA, be persuaded to reduce their reliance on coal – an industry lauded by President Trump?