About 85% of the total primary energy supply in Iceland is derived from domestically produced renewable energy sources. This is the highest share of renewable energy in any national total energy budget.
In 2016 geothermal energy provided about 65% of primary energy, the share of hydropower was 20%, and the share of fossil fuels (mainly oil products for the transport sector) was 15%. In 2013 Iceland also became a producer of wind energy. The main use of geothermal energy is for space heating, with the heat being distributed to buildings through extensive district-heating systems. About 85% of all houses in Iceland are heated with geothermal energy.
In 2015, the total electricity consumption in Iceland was 18,798 GWh. Renewable energy provided almost 100% of electricity production, with about 73% coming from hydropower and 27% from geothermal power. Most of the hydropower plants are owned by Landsvirkjun (the National Power Company) which is the main supplier of electricity in Iceland. Iceland is the world's largest green energy producer per capita and largest electricity producer per capita, with approximately 55,000 kWh per person per year. In comparison, the EU average is less than 6,000 kWh.
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Geology
Iceland's unique geology allows it to produce renewable energy relatively cheaply, from a variety of sources. Iceland is located on the Mid-Atlantic Ridge, which makes it one of the most tectonically active places in the world. There are over 200 volcanoes located in Iceland and over 600 hot springs. There are over 20 high-temperature steam fields that are at least 150 °C [300 °F]; many of them reach temperatures of 250 °C. This is what allows Iceland to harness geothermal energy, and these steam fields are used for heating everything from houses to swimming pools. Hydropower is harnessed through glacial rivers and waterfalls, both of which are in Iceland.
Sources
Hydropower
The first hydropower plant was built in 1904 by a local entrepreneur. It was located in a small town outside of Reykjavík and produced 9 kW of power. The first municipal hydroelectric plant was built in 1921, and it could produce 1 MW of power. This plant single-handedly quadrupled the amount of electricity in the country. The 1950s marked the next evolution in hydroelectric plants. Two plants were built on the Sog River, one in 1953 which produced 31 MW, and the other in 1959 which produced 26.4 MW. These two plants were the first built for industrial purposes and they were co-owned by the Icelandic government. This process continued in 1965 when the national power company, Landsvirkjun, was founded. It was owned by both the Icelandic government and the municipality of Reykjavík. In 1969, they built a 210 MW plant on the Þjórsá River that would supply the southeastern area of Iceland with electricity and run an aluminum smelting plant that could produce 33,000 tons of aluminum a year.
This trend continued and increases in the production of hydroelectric power are directly related to industrial development. In 2005, Landsvirkjun produced 7,143 GWh of electricity total of which 6,676 GWh or 93% was produced via hydroelectric power plants. 5,193 GWh or 72% was used for power-intensive industries like aluminum smelting. In 2009 Iceland built its biggest hydroelectric project to date, the Kárahnjúkar Hydropower Plant, a 690 MW hydroelectric plant to provide energy for another aluminum smelter. This project was opposed strongly by environmentalists.
Other hydroelectric power stations in Iceland include: Blöndustöð (150 MW), Búrfellsstöð (270 MW), Hrauneyjafosstöð (210 MW), Laxárstöðvar (28 MW), Sigöldustöð (150 MW), Sogsstöðvar (89 MW), Sultartangastöð (120 MW), and Vatnsfellsstöð (90 MW).
Iceland is the first country in the world to create an economy generated through industries fueled by renewable energy, and there is still a large amount of untapped hydroelectric energy in Iceland. In 2002 it was estimated that Iceland only generated 17% of the total harnessable hydroelectric energy in the country. Iceland's government believes another 30 TWh of hydropower could be produced each year, while taking into account the sources that must remain untapped for environmental reasons.
Geothermal power
For centuries, the people of Iceland have used their hot springs for bathing and washing clothes. The first use of geothermal energy for heating did not come until 1907 when a farmer ran a concrete pipe from a hot spring that led steam into his house. In 1930, the first pipeline was constructed in Reykjavík, and was used to heat two schools, 60 homes, and the main hospital. It was a 3 km (1.9 mi) pipeline that ran from one of the hot springs outside the city. In 1943 the first district heating company was started with the use of geothermal power. An 18 km (11 mi) pipeline ran through the city of Reykjavík and by 1945 it was connected to over 2,850 homes.
Currently geothermal power heats 89% of the houses in Iceland and over 54% of the primary energy used in Iceland comes from geothermal sources. Geothermal power is used for many things in Iceland. 57.4% of the energy is used for space heat, 25% is used for electricity, and the remaining amount is used in many miscellaneous areas: swimming pools, fish farms, and greenhouses, for example.
The government of Iceland has played a major role in the advancement of geothermal energy. In the 1940s the State Electricity Authority was started by the government in order to increase the knowledge of geothermal resources and the utilization of geothermal power in Iceland. It was later changed to the National Energy Authority (Orkustofnun) in 1967. This agency has been very successful and has made it economically viable to use geothermal energy as a source for heating in many different areas throughout the country. Geothermal power has been so successful that the government no longer has to lead the research in this field because it has been taken over by the geothermal industries.
Geothermal power plants in Iceland include Nesjavellir (120 MW), Reykjanes (100 MW), Hellisheiði (303 MW), Krafla (60 MW), and Svartsengi (46.5 MW) power plants. The Svartsengi power plant and the Nesjavellir power plant produce both electricity and hot-water for heating purposes. The move from oil-based heating to geothermal heating saved Iceland an estimated total of US $8.2 billion from 1970 to 2000 and lowered the release of carbon dioxide emissions by 37%. It would have taken 646,000 tons of oil to heat Iceland's homes in 2003.
The Icelandic government also believes that there are many more untapped geothermal sources throughout the country, estimating that over 20 TWh per year of unharnessed geothermal energy is available. This is about 3.3% of the 600TWh per year of electricity used in Germany. Combined with the unharnessed feasible hydropower, tapping these sources to their full extent would provide Iceland another 50 TWh of energy per year, all from renewable sources.
Iceland's abundant geothermal energy has also enabled renewable energy initiatives, such as Carbon Recycling International's carbon dioxide to methanol fuel process, which could help reduce Iceland's dependence on fossil fuels.
Solar power
Iceland has relatively low insolation, due to the high latitude, thus limited solar power potential. The total yearly insolation is about 20% less than Paris, and half as much as Madrid, with very little in the winter.
Wind power
There is an ongoing project in checking the feasibility of an wind farm in Iceland. In 2012, two wind turbines were installed in South Iceland and in 2015 a wind atlas, named icewind, was completed.
Hydrogen
Imported oil fulfills most of Iceland's remaining energy needs, the cost of which has caused the country to focus on domestic renewable energy. Professor Bragi Arnason first proposed the idea of using hydrogen as a fuel source in Iceland during the 1970s when the oil crisis occurred. The idea was considered untenable, but in 1999 Icelandic New Energy was established to govern the transition of Iceland to the first hydrogen society by 2050. This followed a 1998 decision by the Icelandic Parliament to convert vehicle and fishing fleets to hydrogen produced from renewable energy.
Iceland provides a good location to test the viability of hydrogen as a fuel source for the future; its population is only 320,000 people and over 60 percent live in the capital, Reykjavík. The relatively small scale of the country's infrastructure would ease a transition from oil to hydrogen, and abundant natural energy can be harnessed to produce hydrogen. Iceland is a participant in international hydrogen fuel research and development programs, and other countries are following the nation's progress. However, these factors also make Iceland an advantageous market for electric vehicles. Because electric vehicles are less expensive than hydrogen vehicles and four times more efficient, the country may switch to electric vehicles. Hydrogen cars were not expected to be mass-produced until at least 2015 and it will be faster to introduce electric vehicles. Iceland's 840-mile (1,350 km) Ring Road could be covered by 14 fast-charging stations.
Iceland already converts its surplus electricity into exportable goods and hydrocarbon replacements. It produced 2,000 tons of hydrogen gas by electrolysis in 2002, primarily for the production of ammonia for fertilizer. The plant that produced the fertilizer has been shut down.
ECTOS demonstration project
Iceland's first step towards a hydrogen society was the ECTOS (Ecological City Transport System} demonstration project, which ran from 2001 to August 2005. The project used three hydrogen fuel cell buses and one fuel station. Daimler Chrysler (who manufactured the buses) and Shell (which built the hydrogen-fuel station) contributed to the project. The European Commission 5th framework programme sponsored the project.
The country's first hydrogen station opened in 2003 in Reykjavík. To avoid transportation difficulties, hydrogen is produced on-site with electrolysis (breaking down water into hydrogen and oxygen). Energy used to produce the hydrogen comes from Iceland's renewable resources and the energy cycle, from water to the hydrogen in the fuel cells, emits no CO2. Researchers studied the efficiency of hydrogen as a fuel source during the project, also examining its reliability and effectiveness (cost- and otherwise) as a bus fuel, the ease of incorporating fuel stations and producing hydrogen and the safety precautions necessary for the distribution and use of hydrogen (a very explosive fuel).
HyFLEET:CUTE project
From January 2006 to January 2007 testing of hydrogen buses continued as part of the HyFLEET:CUTE project, which spanned 10 cities in Europe, China and Australia and was sponsored by the European Commission's 6th framework programme. The project studied the long-term effects and most-efficient ways of using hydrogen powered buses. The buses were run for longer periods of time and the durability of the fuel cell was compared to the internal combustion engine, which can theoretically last much longer. The project also compared the fuel efficiency of the original buses with that of new buses from a number of manufacturers.
As a result of the research an improved bus prototype was expected in 2008. Details of further demonstrations involving private cars and a boat were expected in April 2007.
Other projects
The EURO-HYPORT project is investigating the feasibility of exporting hydrogen fuel to Europe. Options include transporting the gas through an undersea pipeline or by boat, or exporting electricity generated in Iceland through a submarine cable.
Another project to build a hydrogen-powered H-ship began in February 2004 and is examining the feasibility of using hydrogen as a fuel for Iceland's fishing fleet; fishing is one of the country's main industries. The project will identify and try to remove barriers to marine vehicles using hydrogen as a fuel, such as problems caused by water and salt. It will also try to identify and remedy weakness in fuel cell, to ensure the protection of marine life. The H-ship project is a step in Iceland's plan to be the first country to phase out fossil fuels. Government funding and private organizations, such as the World Renewable Energy Congress, are the primary sponsors of research in this area.
Education and research
Several Icelandic institutions offer education in renewable energy at a university level and research programmes for its advancement:
- University of Iceland in Reykjavík, the country's largest research institution in renewable energy
- Reykjavik University, School of Science and Engineering
- Keilir, Atlantic center of excellence in Ásbrú, runs a research center in energy sciences.
- RES - The School for Renewable Energy Science, in Akureyri, offers a one-year graduate (M.Sc.) programme in renewable energy science.
- Iceland School of Energy, in Reykjavik, offers M.Sc. studies in renewable energy engineering, policy and science.
- University of Akureyri
Several companies, public and private, are conducting extensive research in the field of renewable energy:
- The National Energy Authority of Iceland is charged with conducting energy research and providing consulting services related to energy development and utilization.
- Landsvirkjun, the national electric company, conducts research in hydro-electric and geothermal power and funds a great deal of related research.
- The Icelandic Energy Portal is an independent information source on the Icelandic energy sector.
- Iceland Geosurvey (ÍSOR) is a public consulting and research institute providing specialist services to the Icelandic power industry, dedicated mainly to geothermal and hydroelectric research.
Source of the article : Wikipedia
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