In December, most of the countries of the world will meet in Paris at the 21st annual United Nations Conference of the Parties (COP) on climate change. COP21 ‘will, for the first time in over 20 years of UN negotiations, aim to achieve a legally binding and universal agreement on climate, with the aim of keeping global warming below 2°C.’
When the Copenhagen conference (COP15) ended in disagreement in 2009, few people thought that the increase in renewable energy would be anything like sufficient to prevent global temperatures rising more than 2°C. But things have dramatically changed in the intervening six years.
Solar power and other renewables have increased dramatically and the technology for the cleaner burning of fossil fuels, including carbon capture and storage, has developed rapidly.
But perhaps the most important change has been the attitudes of governments. No longer is it a case of Europe and other developed countries moving in the direction of renewables, while developing countries, and, in particular, China and India, argue that their economic development requires a rapid expansion of coal-fired power stations. Now China, India and many other emerging countries are rapidly developing their renewable sectors. This is partly driven by the fall in the costs of renewables and partly by worries that climate change will directly effect them. Now the ‘pro-coal’ countries are in a minority.
And industry is realising that significant profit is to be made from the development and installation of power plants using renewable energy. This is driving both R&D and investment. As the Telegraph article, linked below, points out, in 2009 ‘the International Energy Agency (IEA) was still predicting that solar power would struggle to reach 20 gigawatts by now. Few could have foretold that it would in fact explode to 180 gigawatts – over three times Britain’s total power output – as costs plummeted, and that almost half of all new electricity installed in the US in 2013 and 2014 would come from solar’.
So is this a good news story? Will real progress be made at COP21 in Paris? The articles explore the issues.
Articles
Paris climate deal to ignite a $90 trillion energy revolution The Telegraph, Ambrose Evans-Pritchard (28/10/15)
OP21 deal critical for low-carbon economy Japan Times, Carlos Ghosn (29/10/15)
Is Solar Without Subsidies Now Viable? Oilprice.com, Michael McDonald (22/10/15)
Policy Paper
The road to Paris and beyond Centre for Climate Change Economics and Policy, Grantham Research Institute on Climate Change and the Environment (LSE), Rodney Boyd, Fergus Green and Nicholas Stern (August 2015)
Report
Energy and Climate Change International Energy Agency (October 2015)
Questions
- What are the drivers for a move from fossil fuels to renewables? Are they similar dirvers in both developed and developing countries?
- What externalities are involved in energy production (a) from fossil fuels; (b) from renewables?
- What policies can be adopted to internalise the externalities?
- What are the merits and problems of a carbon trading scheme? What determines its effectiveness in reducing CO2 emissions?
- Why are more and more investors moving into the renewable energy sector? Could this become a speculative bubble? Explain.
- How might game theory help to explain the process and outcomes of international negotiations over climate change and energy use?
Obesity is on the rise, especially in children. With all the attendant health problems, concern is growing and various policies have been proposed to try to tackle the problem. One such policy is a sugar tax. This could be either a universal tax on sugar in food products or a tax just on soft drinks, many of which are very high in sugar – typically about seven teaspoons in a can or individual bottle.
Currently the issue is being considered by the UK’s Parliamentary Health Select Committee. Jamie Oliver, the TV chef and restaurateur, argued strongly before the committee in favour of a sugar tax on fizzy drinks. He has already imposed a levy on soft drinks with added sugar in his restaurants. He maintained that it was not just the higher price from a sugar tax that would deter consumption of such drinks, but it would send out an important message that too much sugar is bad for you.
Two days later, Dr Alison Tedstone appeared before the committee. She is chief nutritionist at Public Health England. PHE has been carrying out research into obesity and ways of tackling it. It has reviewed two types of evidence: experimental data on the effects of imposing higher prices on products with added sugar; and the effects of policies pursued in other countries. She stated to the committee that ‘universally all the evidence shows that the tax does decrease consumption’ and that ‘the higher the tax increase, the greater the effect’.
The government was not planning to publish the report at this stage, but under considerable pressure agreed to its publication.
The articles look at the prospects for a sugar tax, its likely effects if one were introduced and at the politics of the situation, which are likely to result in such a tax being rejected.
Videos and audio podcasts
Can you be trusted to eat less sugar? BBC News, Hugh Pym (22/10/15)
‘Introduce sugar tax’, health officials tell government Channel 4 News, Victoria Macdonald (22/10/15)
Jamie Oliver: ‘Bold’ sugar tax to beat childhood obesity BBC News, Hugh Pym (19/10/15)
Be bold on sugar tax, Jamie Oliver says BBC News, Nick Triggle (19/10/15)
Health scientists’ links with sugar industry queried BBC News, Dominic Hughes (12/2/15)
Mexico’s soda tax is starting to change some habits, say health advocates PRI’s The World on YouTube, Jill Replogle (2/12/14)
Articles
Jeremy Hunt told sugar tax would cut childhood obesity as review Government tried to suppress is published Independent, Charlie Cooper (20/10/15)
Sugar tax could help solve Britain’s obesity crisis, expert tells MPs The Guardian, Ben Quinn (21/10/15)
Jamie Oliver ‘expects kicking’ over sugar tax The Guardian, Jessica Elgot (22/10/15)
Sugar tax, fat fines and gold coins: new ways cities are tackling obesity The Guardian, Sarah Johnson (22/10/15)
Sugar tax and offers ban ‘would work’ BBC News (22/10/15)
Public Health England tells UK government: Sugar taxes do work FoodNavigator.com, Niamh Michail (21/10/15)
Childhood Obesity Partially Down To The Coco Pops Monkey, Sugar Tax Report Claims Huffington Post, Sarah Ann Harris (21/10/15)
Health officials back a sugar tax – and want the Coco Pops monkey banned The Telegraph, Laura Donnelly (20/10/15)
Jeremy Hunt embroiled in row over sugar tax report The Telegraph, Laura Donnelly (11/10/15)
Revealed: ‘Sugar tax report’ which was suppressed by Government The Telegraph, Laura Donnelly (22/10/15)
Public Health England obesity report: the key points The Guardian, James Meikle (22/10/15)
Cameron says no to sugar tax Mail Online, Jason Groves and Daniel Martin (21/10/15)
Sugar tax: Former health minister backs levy to prevent NHS ‘obesity crisis’ Independent, Charlie Cooper (21/10/15)
Journal articles and reports
Sugar Reduction: The evidence for action Public Health England, Dr Alison Tedstone, Victoria Targett, Dr Rachel Allen and staff at PHE (22/10/15)
Effects of a fizzy drink tax on obesity rates estimated NHS CHoices (1/11/13)
Overall and income specific effect on prevalence of overweight and obesity of 20% sugar sweetened drink tax in UK: econometric and comparative risk assessment modelling study British Medical Journal, Adam D M Briggs, Oliver T Mytton, Ariane Kehlbacher, Richard Tiffin, Mike Rayner and Peter Scarborough (2013;347:f6189)
Perspectives: Time for a sugary drinks tax in the UK? Journal of Public Health, Oliver Mytton (29/5/14)
Sugar reduction: Responding to the challenge Public Health England, Dr Alison Tedstone, Ms Sally Anderson and Dr Rachel Allen and staff at PHE (June 2014)
Questions
- What factors are driving the current high consumption of sugar?
- How is the concept of price elasticity of demand relevant to the effectiveness of imposing a sugar tax?
- What would determine the incidence of such a tax between food and drink manufacturers and consumers?
- Would such a tax be progressive, regressive or neutral? Explain.
- What other policies could be pursued to discourage the consumption of sugar? Discuss their likely effectiveness and compare them with a sugar tax.
- What externalities are involved in sugar consumption? How would you set about measuring them? Should a sugar tax be set at a rate that internalises the estimated externalities?
- Examine the objections to imposing a sugar tax.
Is slower economic growth a cost of cutting greenhouse gas emissions? Apparently not – at least according to two studies: one by DIW Econ, a German institute for economic research, and the other, earlier this year, by the International Energy Association (see reports below).
The IEA study found that, despite global GDP having grown by 6.4% in 2014, global emissions remained flat. The DIW Econ study found that from 2004 to 2014, OECD countries as a whole grew by 16% while cutting fossil fuel consumption by 6% and greenhouse gas emissions by 6.4%.
But what does this mean? If growth accelerated, what would happen to greenhouse gas emissions? Would they begin to rise again? Probably.
The point is that various developments, largely independent of economic growth have been reducing the greenhouse gas emissions/GDP ratio. These developments include: technological advances in energy generation; the switch to alternative fuels in many countries, thanks, in large part to lower renewable energy costs; increased energy efficiency by consumers; and a continuing move from energy-intensive manufacturing to less energy-intensive services.
So if governments forced more radical cuts in greenhouse gases, would this reduce the rate of economic growth or have no effect? For a given level of technological advancement, the initial effect would probably be a reduction in economic growth. But to the extent that this encouraged further investment in renewables and energy saving, it might even stimulate economic growth over the longer term, especially if it helped to bring lower energy prices.
A big problem in decoupling economic growth from fossil fuel usage is that developing countries, which are taking a growing share of world manufacturing, are more heavily dependent on coal than most developed countries. But even here there seems to be some hope. China, the biggest manufacturer in the developing world, is rapidly increasing its use of renewables. As the IEA press release states:
In China, 2014 saw greater generation of electricity from renewable sources, such as hydropower, solar and wind, and less burning of coal.
If the world is to tackle global warming by making significant cuts in greenhouse gases, there must be a way for developing countries to continue growing while making less use of fossil fuels.
Article
Cutting greenhouse gas emissions won’t slow global economic growth — report The Guardian, Bruce Watson (26/9/15)
Reports
Turning point: Decoupling Greenhouse Gas Emissions from Economic Growth DIW Econ, Lars Handrich, Claudia Kemfert, Anselm Mattes, Ferdinand Pavel, Thure Traber (September 2015)
World Energy Outlook Special Report 2015: Energy and Climate Change International Energy Agency (June 2015)
Questions
- What are the possible causal relationships between cutting greenhouse gas emissions and the rate of economic growth?
- What incentive mechanisms can governments or other agencies adopt to encourage reductions in greenhouse gas emissions without reducing economic growth?
- Can a cap and trade system, such as the European Emissions Trading Scheme help to achieve a given level of emissions reduction at minimum cost to economic growth? Explain.
- How might the developed world support developing countries in moving to a low carbon technology?
- What factors lie behind the falling costs of renewable energy? Are these the same factors that lie behind the falling cost of oil?
- What political problems might hinder the greater production of renewable energy?
- How might an economist set about determining a socially optimal amount of fossil fuel production? What conceptual and philosophical problems might there be in agreeing what is meant by a social optimum?
The second largest economy in the world, with a record expansion to its current economic status: China. With a phenomenal population, massive migration to the cities and incredible infrastructure development, China has fast become a key economic player, with environmental and pollution problems to match.
The price of China’s economic development may be too high for some people. Increases in incomes, growth and employment may be good news, but is the cost too high? Do economic growth and progress mean poor health and if so, is this a price worth paying
Another big topic within China is the impact on inequality. With growth accelerating in urban areas, population movement from the rural to the urban has been a common feature across China, but this has also created greater inequality. This population movement has separated families and played a role in creating barriers of access to health and education.
The following article from the BBC considers a range of indicators within China and you may also want to review some earlier blog postings on the Sloman News Site which analyse the Chinese economy.
Cement and pig consumption reveal China’s huge changes BBC News (21/9/15)
Questions
- What are the key drivers of China’s development?
- What are the costs and benefits of rural-urban migration?
- To what extent do you think there may be a trade-off between quality and quantity when it comes to infrastructure projects? Or is Chinese labour simply more efficient relative to countries such as the UK?
- How should we measure economic development? If access to education and health care is limited in the more rural areas, but widely available in the larger cities, does this suggest a country that is developing?
- What are the main externalities that China must tackle? Are they domestic issues or global ones? What about the solutions?
- If a key driver of Chinese growth and development is government investment in infrastructure projects, is this true and sustainable growth or do you think it might slowly disappear if the government doesn’t continue to invest?
- Do you think the relative success of China can be replicated in other emerging nations and in particular in nations within Africa?
According to a recent IMF Survey Magazine article, Counting the Cost of Energy Subsidies, world-wide energy subsidies in 2015 account for $5.3 trillion or 6.5% of global GDP. The article summarises findings of an IMF working paper (see link below), which provides estimates by country, product (e.g. coal and oil) and component (e.g. global warming, local air pollution and congestion) in an Excel file
The working paper argues that energy subsidies are both larger and more pervasive than previously thought. According to the IMF Survey Magazine:
Eliminating global energy subsidies could reduce deaths related to fossil-fuel emissions by over 50 percent and fossil-fuel related carbon emissions by over 20 percent. The revenue gain from eliminating energy subsidies is projected to be $2.9 trillion (3.6 percent of global GDP) in 2015. This offers huge potential for reducing other taxes or strengthening revenue bases in countries where large informal sector constrains broader fiscal instruments.
In interpreting the findings it is important to understand how the term ‘subsidies’ is being used. 
According to the report, most of the $5.3 trillion “arises from countries setting energy taxes below levels that fully reflect the environmental damage associated with energy consumption.”
In other words, the term subsidy is being used whenever taxes do not fully account for the negative externalities associated with extracting and burning fossil fuels. Perhaps a better term would be ‘under-taxing’ rather than ‘subsidising’. Nevertheless the scale of not internalising externalities is huge. As Lord Nicholas Stern (author of the 2006 Stern Review on the Economics of Climate Change) says:
“The failure to reflect the real costs of fossil fuels in prices and policies means that the lives and livelihoods of billions of people around the world are being threatened by climate change and local air pollution.”
But, while not taxing external costs account for more than 80% of the underpricing of fossil fuel energy, some three-quarters of these external costs relate to local environmental damage, rather than international damage such as global warming. Thus charging for these external costs would benefit primarily the local population, as well as generating revenues, and thus provides a strong argument for governments raising energy prices through increased taxes or reduced subsidies.
So which countries are the major culprits in ‘subsidising’ fossil fuels? What specific measures does the IMF recommend to tackle the problem and what countries are addressing the problem and in what ways? The working paper and articles address these questions.
Articles
Counting the Cost of Energy Subsidies IMF Survey Magazine (17/7/15)
G20 countries pay over $1,000 per citizen in fossil fuel subsidies, says IMF The Guardian, Damian Carrington (4/8/15)
Fossil fuels subsidised by $10m a minute, says IMF The Guardian, Damian Carrington (18/5/15)
Working Paper
How Large Are Global Energy Subsidies? IMF Working Paper, David Coady, Ian Parry, Louis Sears, and Baoping Shang (May 2015)
Questions
- Explain how energy subsidies are defined in the IMF working paper.
- What measurement problems are there in calculating the size of the ‘subsidies’?
- Draw a diagram to show how the under taxing of fossil fuel usage leads to a greater than socially optimum level of consumption of fossil fuels.
- What specific policies are pursued by the four biggest fossil fuel subsidising countries?
- What political problems are there in persuading countries to reduce fossil fuel subsidies/increase fossil fuel taxes.
- Is there a relatively high or low income elasticity of demand for energy? What are the implications of this for different income groups of policies to hold down energy prices?
In December, most of the countries of the world will meet in Paris at the 21st annual United Nations Conference of the Parties (COP) on climate change. COP21 ‘will, for the first time in over 20 years of UN negotiations, aim to achieve a legally binding and universal agreement on climate, with the aim of keeping global warming below 2°C.’
And industry is realising that significant profit is to be made from the development and installation of power plants using renewable energy. This is driving both R&D and investment. As the Telegraph article, linked below, points out, in 2009 ‘the International Energy Agency (IEA) was still predicting that solar power would struggle to reach 20 gigawatts by now. Few could have foretold that it would in fact explode to 180 gigawatts – over three times Britain’s total power output – as costs plummeted, and that almost half of all new electricity installed in the US in 2013 and 2014 would come from solar’.
