Energy transition is generally defined as a long-term structural change in energy systems. These have occurred in the past, and still occur worldwide. Historic energy transitions are most broadly described by Vaclav Smil. Contemporary energy transitions differ in terms of motivation and objectives, drivers and governance.
The layout of the world’s energy systems have changed significantly over time. Until the 1950s, the economic mechanism behind energy systems was local rather than global. As development progressed, different national systems became more and more integrated becoming the large, international systems seen today. Historical transition rates of energy systems have been extensively studied. While historical energy transitions were generally protracted affairs, unfolding over many decades, this does not necessarily hold true for the present energy transition, which is unfolding under very different policy and technological conditions.
Solving the global warming problem is regarded as the most important challenge facing humankind in the 21st century. The capacity of the earth system to absorb greenhouse gas emissions is already exhausted, and under the Paris climate agreement, emissions must cease by 2040 or 2050. Barring a breakthrough in carbon sequestration technologies, this requires an energy transition away from fossil fuels such as oil, natural gas, lignite, and coal. This energy transition is also known as the decarbonization of the energy system. Available technologies are nuclear power (fission) and the renewable energy sources wind, hydropower, solar power, geothermal, and marine energy.
A timely implementation of the energy transition requires multiple approaches in parallel. Energy conservation and improvements in energy efficiency thus play a major role. Smart electric meters can schedule energy consumption for times when electricity is abundant, reducing consumption at times when the more variable renewable energy sources are scarce (night time and lack of wind).
Despite the widespread understanding that a transition to renewable energy is necessary, there are a number of risks and barriers to making renewable energy more appealing than conventional energy. Renewable energy rarely comes up as a solution beyond combating climate change, but has wider implications for food security and employment. This further supports the recognized dearth of research for clean energy innovations, which may lead to quicker transitions. Overall, the transition to renewable energy requires a shift among governments, business, and the public. Altering public bias may mitigate the risk of subsequent administrations de-transitioning - through perhaps public awareness campaigns or carbon levies.
After a transitional period, renewable energy production is expected to make up most of the world's energy production. The risk management firm, DNV GL, forecasts that, by 2050, the world's primary energy mix will be split equally between fossil and non-fossil sources.
An example of transition toward sustainable energy, is the shift by Germany (German: Energiewende) and Switzerland, to decentralised renewable energy, and energy efficiency. Although so far these shifts have been replacing nuclear energy, their declared goal 2012 was the abolishment of coal, reducing non-renewable energy sources and the creation of an energy system based on 60% renewable energy by 2050. As of 2018, the 2030 coalition goals are to achieve 65% renewables in electricity production until 2030 in Germany.
Defining the term 'energy transition'
An 'energy transition' designates a significant change for an energy system that could be related to one or a combination of system structure, scale, economics, and energy policy. An 'energy transition' is usefully defined as a change in the state of an energy system as opposed to a change in an individual energy technology or fuel source. A prime example is the change from a pre-industrial system relying on traditional biomass and other renewable power sources (wind, water, and muscle power) to an industrial system characterized by pervasive mechanization (steam power) and the use of coal. Market shares reaching pre-specified thresholds are typically used to characterize the speed of transition (e.g. coal versus traditional biomass) and typical market share thresholds in the literature are 1%, 10% for the initial shares and 50%, 90% and 99% for outcome shares following a transition.
For energy systems, many lessons can be learned from history. The need for large amounts of firewood in early industrial processes in combination with prohibitive costs for overland transportation led to a scarcity of accessible (e.g. affordable) wood and it has been found that eighteenth century glass-works “operated like a forest clearing enterprise. When Britain had to resort to coal after largely having run out of wood, the resulting fuel crisis triggered a chain of events that two centuries later culminated in the Industrial Revolution. Similarly, increased use of peat and coal was vital elements paving the way for the Dutch Golden Age roughly spanning the entire 17th century. Another example where resource depletion triggered technological innovation and a shift to new energy sources in 19th Century whaling and how whale oil eventually became replaced by kerosene and other petroleum-derived products.
Technology has been identified as an important but difficult-to-predict driver of change within energy systems. Published forecasts have systematically tended to overestimate the potential of new energy and conversion technologies and underestimated the inertia in energy systems and energy infrastructure (e.g. power plants, once built, characteristically operate for many decades). The history of large technical systems is very useful for enriching debates about energy infrastructures by detailing many of their long-term implications. The speed at which a transition in the energy sector needs to take place will be historically rapid. Moreover, the underlying technological, political and economic structures will need to change radically — a process one author calls regime shift.
The term 'energy transition' could also encompasses a reorientation of policy and this is often the case in public debate about energy policy. For example, this could imply a rebalance of demand to supply and a shift from centralized to distributed generation (for example, producing heat and power in very small cogeneration units), which should replace overproduction and avoidable energy consumption with energy-saving measures and increased efficiency. In a broader sense the energy transition could also entail a democratization of energy or a move towards increased sustainability.
In June 2018, at their G20 Summit in Argentina, the G20 Energy Ministers ‘welcome(d) the approach of Argentina’s G20 Presidency, which recognises that there are different possible national paths to achieve cleaner energy systems - while promoting sustainability, resilience and energy security - under the term “transitions” (in plural). This view reflects the fact that each G20 member - according to its stage of development - has a unique and diverse energy system as starting point, with different energy resources, demand dynamics, technologies, stock of capital, geographies and cultures.’
Status in specific countries
Austria embarked on its energy transition (Energiewende) some decades ago. Due to geographical conditions, energy production in Austria relies heavily on renewable energies, notably hydropower. 78.4% of domestic production in 2013 came from renewable energy, 9.2% from natural gas and 7.2% from petroleum. (rest: waste). On the basis of the Federal Constitutional Law for a Nuclear-Free Austria, no nuclear power stations are in operation in Austria. But domestic energy production makes up only 36% of Austria's total energy consumption, which among other things encompasses transport, electricity production, and heating. In 2013, oil accounts for about 36.2% of total energy consumption, renewable energies 29.8%, gas 20.6%, and coal 9.7%. In the past 20 years, the structure of gross domestic energy consumption has shifted from coal and oil to new renewables, in particular between 2005 and 2013 (plus 60%). The EU target for Austria require a renewables share of 34% by 2020 (gross final energy consumption). Austria is on a good way to achieve this target (32.5% in 2013). Energy transition in Austria can be also seen on the local level, in some villages, towns and regions. For example, the town of Güssing in the state of Burgenland is a pioneer in independent and sustainable energy production. Since 2005, Güssing has already produced significantly more heating (58 gigawatt hours) and electricity (14 GWh) from renewable resources than the city itself needs.
Denmark, as a country reliant on imported oil, was impacted particularly hard by the 1973 oil crisis. This roused public discussions on building nuclear power stations to diversify energy supply. A strong anti-nuclear movement developed, which fiercely criticized nuclear power plans taken up by the government, and this ultimately led to a 1985 resolution not to build any nuclear power stations in Denmark. The country instead opted for renewable energy, focusing primarily on wind power. Wind turbines for power generation already had a long history in Denmark, as far back as the late 1800s. As early as 1974 a panel of experts declared "that it should be possible to satisfy 10% of Danish electricity demand with wind power, without causing special technical problems for the public grid." Denmark undertook the development of large wind power stations — though at first with little success (like with the Growian project in Germany).
Small facilities prevailed instead, often sold to private owners such as farms. Government policies promoted their construction; at the same time, positive geographical factors favored their spread, such as good wind power density and Denmark's decentralized patterns of settlement. A lack of administrative obstacles also played a role. Small and robust systems came on line, at first in the power range of only 50-60 kilowatts — using 1940s technology and sometimes hand-crafted by very small businesses. In the late seventies and the eighties a brisk export trade to the United States developed, where wind energy also experienced an early boom. In 1986 Denmark already had about 1200 wind power turbines, though they still accounted for just barely 1% of Denmark's electricity. This share increased significantly over time. In 2011, renewable energies covered 41% of electricity consumption, and wind power facilities alone accounted for 28%. The government aims to increase wind energy's share of power generation to 50% by 2020, while at the same time reducing carbon dioxide emissions by 40%. On 22 March 2012, the Danish Ministry of Climate, Energy and Building published a four-page paper titled "DK Energy Agreement," outlining long-term principles for Danish energy policy.
The installation of oil and gas heating is banned in newly constructed buildings from the start of 2013; beginning in 2016 this will also apply to existing buildings. At the same time an assistance program for heater replacement was launched. Denmark's goal is to reduce the use of fossil fuels 33% by 2020. The country is scheduled to attain complete independence from petroleum and natural gas by 2050.
Since 2012, political discussions have been developing in France about the energy transition and how the French economy might profit from it.
In September 2012, Minister of the Environment Delphine Batho coined the term "ecological patriotism." The government began a work plan to consider starting the energy transition in France. This plan should address the following questions by June 2013:
- How can France move towards energy efficiency and energy conservation? Reflections on altered lifestyles, changes in production, consumption, and transport.
- How to achieve the energy mix targeted for 2025? France's climate protection targets call for reducing greenhouse gas emissions 40% by 2030, and 60% by 2040.
- Which renewable energies should France rely on? How should the use of wind and solar energy can be promoted?
- What costs and funding models will likely be required for alternative energy consulting and investment support? And how about for research, renovation, and expansion of district heating, biomass, and geothermal energy? One solution could be a continuation of the CSPE, a tax that is charged on electricity bills.
The Environmental Conference on Sustainable Development on 14 and 15 September 2012 treated the issue of the environmental and energy transition as its main theme.
In 2015, the National Assembly has adopted legislation for the transition to low emission vehicles.
France is second only to Denmark as having the worlds lowest carbon emissions in relation to gross domestic product.
The key policy document outlining the Energiewende was published by the German government in September 2010, some six months before the Fukushima nuclear accident. Legislative support was passed in September 2010. Important aspects include:
|Greenhouse gas emissions|
|Greenhouse gas emissions (base year 1990)||−27.0%||−40%||−55%||−70%||−80 to −95%|
|Share of gross final energy consumption||13.5%||18%||30%||45%||60%|
|Share of gross electricity consumption||27.4%||35%||50%||65%||80%|
|Efficiency and consumption|
|Primary energy consumption (base year 2008)||−8.7%||−20%||−50%|
|Gross electricity consumption (base year 2008)||−4.6%||−10%||−25%|
|Final energy consumption in transport (base year 2005)||1.7%||−10%||−40%|
In addition, there will be an associated research and development drive.
The policy has been embraced by the German federal government and has resulted in a huge expansion of renewables, particularly wind power. Germanys share of renewables has increased from around 5% in 1999 to 17% in 2010, reaching close to the OECD average of 18% usage of renewables. Producers have been guaranteed a fixed feed-in tariff for 20 years, guaranteeing a fixed income. Energy co-operatives have been created, and efforts were made to decentralize control and profits. The large energy companies have a disproportionately small share of the renewables market. Nuclear power stations were closed, and the existing nine stations will close earlier than necessary, in 2022.
The reduction of reliance on nuclear stations has had the consequence of increased reliance on fossil fuels. One factor that has inhibited efficient employment of new renewable energy has been the lack of an accompanying investment in power infrastructure to bring the power to market. It is believed 8300 km of power lines must be built or upgraded.
Different Länder have varying attitudes to the construction of new power lines. Industry has had their rates frozen and so the increased costs of the Energiewende have been passed on to consumers, who have had rising electricity bills. Germans in 2013 had some of the highest electricity costs in Europe. Nonetheless, for the first time in more than ten years, electricity prices for household customers fell at the beginning of 2015.
On 14 September 2012 the Japanese government decided at a ministerial meeting in Tokyo to phase out nuclear power by the 2030s, or 2040 at the very latest. The government said that it would take "all possible measures" to achieve this goal. A few days later the government retrenched the planned nuclear phaseout after the industry pushed for reconsideration. Arguments cited were that a nuclear phaseout would burden the economy, and that imports of oil, coal, and gas would bring high added costs. The government then approved the energy transition, but left open the time-frame for decommissioning the nuclear power stations.
The United Kingdom is mainly focusing on wind power, both onshore and offshore, and in particular is strongly promoting the establishment of offshore wind power. With an installed capacity of 18.8 GW at the end of 2017, Britain is one of the worldwide leaders taking the sixth place, after China, the United States, Germany, India, and Spain. It was initially promoted with a quota system, but expansion targets were missed repeatedly. This led the government to implement a feed-in tariff instead.
In the United States, the share of renewable energy (excluding hydropower) in electricity generation has grown from 3.3 percent (1990) to 5.5 percent (2013). Oil use will decline in the USA owing to the increasing efficiency of the vehicle fleet and replacement of crude oil by natural gas as a feedstock for the petrochemical sector. One forecast is that the rapid uptake of electric vehicles will reduce oil demand drastically, to the point where it is 80% lower in 2050 compared with today.
In December 2016, Block Island Wind Farm became the first commercial US offshore wind farm. It consists of five 6 MW turbines (together 30 MW) located near-shore (3.8 miles (6.1 km) from Block Island, Rhode Island) in the Atlantic Ocean. At the same time, Norway-based oil major Statoil laid down nearly $42.5 million on a bid to lease a large offshore area off the coast of New York.
- 100% renewable energy
- Amory Lovins
- Cost of electricity by source#United States
- Solar power in the United States
- Energy Observer
- Energy transition in Germany
- The Fourth Revolution: Energy
- Fossil-fuel phase-out
- Germany National Renewable Energy Action Plan
- Green industrial policy
- List of countries by renewable electricity production
- Paris Agreement
- Renewable energy commercialization
- Renewable energy in the European Union
- Soft energy path
- "World Energy Council. 2014. Global Energy Transitions".
- Smil, Vaclav. 2010. Energy Transitions. History, Requirements, Prospects. Praeger
- Häfelse, W; Sassin, W (1977). "The global energy system". Annual Review of Energy. 2: 1–30. doi:10.1146/annurev.eg.02.110177.000245.
- Höök, Mikael; Li, Junchen; Johansson, Kersti; Snowden, Simon (2011). "Growth Rates of Global Energy Systems and Future Outlooks". Natural Resources Research. 21 (1): 23–41. doi:10.1007/s11053-011-9162-0.
- Sovacool, Benjamin K. (2016-03-01). "How long will it take? Conceptualizing the temporal dynamics of energy transitions". Energy Research & Social Science. 13: 202–215. doi:10.1016/j.erss.2015.12.020. ISSN 2214-6296.
- Nicola Armaroli, Vincenzo Balzani, The Future of Energy Supply: Challenges and Opportunities. In: Angewandte Chemie 46, (2007), 52-66, p. 52, doi:10.1002/anie.200602373.
- Christiana Figueres, Hans Joachim Schellnhuber, Gail Whiteman, Johan Rockström, Anthony Hobley, Stefan Rahmstorf (2017): Three years to safeguard our climate. Nature [DOI: 10.1038/546593a]
- CIFAR. "The Future of Basic and Applied Energy Research". CIFAR.
- CIFAR. "The Sustainability of Global Energy Consumption Demand and Supply Needs". CIFAR.
- CIFAR. "The Role of Regulation in Inducing Clean Energy Adoption". CIFAR.
- "DNV GL's Energy Transition Outlook 2018". eto.dnvgl.com. Retrieved 2018-10-16.
- Ben Sills (2011-08-29). "Solar May Produce Most of World's Power by 2060, IEA Says". Bloomberg.
- Notter, Dominic A. (2015-01-01). "Small country, big challenge: Switzerland's upcoming transition to sustainable energy". Bulletin of the Atomic Scientists. 71 (4): 51–63. doi:10.1177/0096340215590792. ISSN 0096-3402.
- Federal Ministry for the Environment (29 March 2012). Langfristszenarien und Strategien für den Ausbau der erneuerbaren Energien in Deutschland bei Berücksichtigung der Entwicklung in Europa und global [Long-term Scenarios and Strategies for the Development of Renewable Energy in Germany Considering Development in Europe and Globally] (PDF). Berlin, Germany: Federal Ministry for the Environment (BMU). Archived from the original (PDF) on 27 October 2012.
- https://www.bmwi.de/BMWi/Redaktion/PDF/V/vierter-monitoring-bericht-energie-der-zukunft-englische-kurzfassung,property=pdf,bereich=bmwi2012,sprache=de,rwb=true.pdf Archived 20 September 2016 at the Wayback Machine pg6
- "Das steht im Abschlusstext von Union und SPD". Sueddeutsche.de. 2018-09-04 – via Sueddeutsche.de.
- Grübler, A. (1991). "Diffusion: Long-term patterns and discontinuities". Technological Forecasting and Social Change. 39 (1–2): 159–180. doi:10.1016/0040-1625(91)90034-D.
- Grübler, A; Wilson, C.; Nemet, G. (2016). "Apples, oranges, and consistent comparisons of the temporal dynamics of energy transitions". Energy Research & Social Science. 22 (12): 18–25. doi:10.1016/j.erss.2016.08.015.
- Podobnik, B. (1999). "Toward a sustainable energy regime: a long-wave interpretation of global energy shifts". Technological Forecasting and Social Change. 62 (3): 155–172. doi:10.1016/S0040-1625(99)00042-6.
- Rühl, C.; Appleby, P.; Fennema, F.; Naumov, A.; Schaffer, M. (2012). "Economic development and the demand for energy: a historical perspective on the next 20 years". Energy Policy. 50: 109–116. doi:10.1016/j.enpol.2012.07.039.
- Debeir, J.C.; Deléage, J.P.; Hémery, D. (1991). In the Servitude of Power: Energy and Civilisation Through the Ages. London: Zed Books. ISBN 9780862329426.
- Nef, J.U (1977). "Early energy crisis and its consequences". Scientific American. 237 (5): 140–151. Bibcode:1977SciAm.237e.140N. doi:10.1038/scientificamerican1177-140.
- Fouquet, R.; Pearson, P.J.G. (1998). "A thousand years of energy use in the United Kingdom". The Energy Journal. 19 (4): 1–41. doi:10.5547/issn0195-6574-ej-vol19-no4-1. JSTOR 41322802.
- Unger, R.W. (1984). "Energy sources for the dutch golden age: peat, wind, and coal". Research in Economic History. 9: 221–256.
- Bardi, U. (2007). "Energy prices and resource depletion: lessons from the case of whaling in the nineteenth century". Energy Sources, Part B: Economics, Planning, and Policy. 2 (3): 297–304. doi:10.1080/15567240600629435.
- Grübler, A.; Nakićenović, N.; Victor, D.G. (1999). "Dynamics of energy technologies and global change". Energy Policy. 27 (5): 247–280. doi:10.1016/S0301-4215(98)00067-6.
- Hirsch, R.F.; Jones, C.F. (2014). "History's contributions to energy research and policy". Energy Research & Social Science. 1 (3): 106–111. doi:10.1016/j.erss.2014.02.010.
- Sovacool, Benjamin K (2016). "How long will it take? Conceptualizing the temporal dynamics of energy transitions". Energy Research and Social Science. 13: 202–215. doi:10.1016/j.erss.2015.12.020.
- Strunz, Sebastian (2014). "The German energy transition as a regime shift". Ecological Economics. 100: 150–158. doi:10.1016/j.ecolecon.2014.01.019.
- Henrik Paulitz: Dezentrale Energiegewinnung - Eine Revolutionierung der gesellschaftlichen Verhältnisse. IPPNW. (Decentralized Energy Production - Revolutionizing Social Relations) Accessed 20 January 2012.
- "G20 Energy Ministers Communique" (PDF). 2018-06-15.
- Modell Güssing - Wussten Sie, dass ....
- Sonne: Im Norden ging die auf. In Tagesspiegel, 18 October 2010. Retrieved 19 October 2012.
- Nuclear Energy in Denmark. http://www.world-nuclear.org. Retrieved 19 October 2012.
- Erich Hau, Windkraftanlagen: Grundlagen, Technik, Einsatz, Wirtschaftlichkeit, Berlin - Heidelberg 2008, p45.
- Die Kraft aus der Luft. In: Die Zeit, 6 February 2012. Retrieved 19 October 2012.
- Erich Hau, Windkraftanlagen: Grundlagen, Technik, Einsatz, Wirtschaftlichkeit, Berlin - Heidelberg 2008, p56.
- Renewables now cover more than 40% of electricity consumption. Danish Energy Agency. Retrieved 19 October 2012.
- Dänemark hat neue Regierung In: Neues Deutschland, 4 October 2011. Retrieved 19 October 2012.
- DK Energy Agreement. March 22, 2012.
- Abschied vom Ölkessel. In: heise.de, 16 February 2013. accessed on 16 February 2013.
- La transition énergétique, un vrai vecteur de croissance pour la France Les échos, Mai 2012
- Transition énergétique: quels moyens et quels coûts? batiactu 21. September 2012
- Conférence environnementale des 14-15 septembre 2012 developpement-durable.gouv.fr, September 2012
- AVEM, Association. "Adoption de la loi sur la transition énergétique".
- http://www.iea.org/publications/freepublications/publication/KeyWorld2014.pdf pg51
- Girl, Energy. "Strommix 2017 Deutschland: Stromerzeugung nach Energiequellen". Stromvergleich.
- Federal Ministry of Economics and Technology (BMWi); Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) (28 September 2010). Energy concept for an environmentally sound, reliable and affordable energy supply (PDF). Berlin, Germany: Federal Ministry of Economics and Technology (BMWi). Archived from the original (PDF) on 6 October 2016. Retrieved 1 May 2016.
- The Energy of the Future: Fourth "Energy Transition" Monitoring Report — Summary (PDF). Berlin, Germany: Federal Ministry for Economic Affairs and Energy (BMWi). November 2015. Archived from the original (PDF) on 20 September 2016. Retrieved 9 June 2016.
- "Germany's energy transformation Energiewende". The Economist. 2012-07-28. Retrieved 2013-03-06.
- "Germany's energy reform: Troubled turn". The Economist. 2013-02-09. Retrieved 2013-03-06.
- Wegen Reaktorunglück in Fukushima: Japan verkündet Atomausstieg bis 2040 at focus.de, 14 September 2012 (accessed on 14 September 2012).
- Energiewende: Japan schränkt Atomausstieg wieder ein at zeit.de, 19 September 2012 (accessed on 20 September 2012).
- Erneuerbare Energien: Quotenmodell keine Alternative zum EEG. DIW Wochenbericht 45/2012, S.18f. accessed on 14 April 2013.
- Christopher F. Jones (March 2016): Energy Transitions in the United States - Worker opportunities past, present, and future. (PDF (3 MB)
- Alexander Ochs, Christoph von Friedeburg (2014) / www.worldwatch.org: Energy Transitions in Germany and the United States. Transatlantic Perspectives, Challenges, and the Way Forward, p. 3. Figure 1 is based on (footnote 8 of the paper names the sources) http://data.worldbank.org, www.eia.gov (2016 edition of the report here (pdf, 13 MB) and an EUROSTAT website.
- "DNV GL's Energy Transition Outlook 2018". eto.dnvgl.com. Retrieved 2018-10-17.
- It was “the highest bid ever for a U.S. offshore wind energy area,” according to the American Wind Energy Association. The leased area has the potential to develop more than 1 gigawatt of offshore wind, which is a sizeable offshore wind park. (source: washingtonpost.com 19 December 2016)
- Clean Tech Nation: How the U.S. Can Lead in the New Global Economy (2012) by Ron Pernick and Clint Wilder
- Deploying Renewables 2011 (2011) by the International Energy Agency
- Armstrong, Robert C., Catherine Wolfram, Robert Gross, Nathan S. Lewis, and M.V. Ramana et al. The Frontiers of Energy, Nature Energy, Vol 1, 11 January 2016.
- Reinventing Fire: Bold Business Solutions for the New Energy Era (2011) by Amory Lovins
- Renewable Energy Sources and Climate Change Mitigation (2011) by the IPCC
- Solar Energy Perspectives (2011) by the International Energy Agency
- energytransition.de: German Energy Transition
- Visual Capitalist, October 31st, 2018, Iman Gosh, visualcapitalist.com: Visualizing the Global Transition to Green Energy