| Southampton District Energy Scheme | |
|---|---|
 | |
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| Country | United Kingdom |
| Location | Southampton |
| Coordinates | 50°54′17″N1°24′35″W / 50.904780°N 1.4096148°W |
| Status | Operational |
| Commission date | 1986 |
| Owner(s) | ENGIE |
| Geothermal power station | |
| Min. source temp. | 76 °C |
| Max. well depth | 1,800 m (5,900 ft) |
| External links | |
| Commons | Related media on Commons |
The Southampton District Energy Scheme is a district heating and cooling system in Southampton, United Kingdom. The system is owned and operated by ENGIE.
In the 1980s the Department of Energy undertook a research and development programme to examine the potential of geothermal aquifers in the UK. However, after some initial success drilling a well in the Wessex Basin in 1981, it was deemed too small to be commercially viable. The project was abandoned by the Department of Energy, but Southampton City Council took the decision to create the UK's first geothermal power scheme. This was undertaken as part of a plan to become a "self sustaining city" in energy generation, promoted by City Council officer Mike Smith and council leader Alan Whitehead. [1] [2] [3]
Pumping started in 1986 from the Wessex Basin aquifer at a depth of 1,800 m (5,900 ft) and a temperature of 76 °C (169 °F). [1] [4] The system initially supplied only the Southampton Civic Centre, but was gradually expanded to serve over 1,000 residential properties, [1] as well as the WestQuay shopping centre, the Royal South Hants Hospital, Solent University and the Carnival offices; and is part of an enlarged city centre district heating system that includes other combined heating, cooling and power sources.
By 2007 the system had 11 km (6.8 miles) of pipes, and was producing 40 GWh of heat, 22 GWh of electricity and 8 GWh of cooling per year. [1]
By 2014 the system provided 7 MW CHP, 2 MW of geothermal power, and 1 MW from biomass, saving 12,000 tons CO2 per year. [5]
Geothermal energy is thermal energy extracted from the Earth's crust. It combines energy from the formation of the planet and from radioactive decay. Geothermal energy has been exploited as a source of heat and/or electric power for millennia.
District heating is a system for distributing heat generated in a centralized location through a system of insulated pipes for residential and commercial heating requirements such as space heating and water heating. The heat is often obtained from a cogeneration plant burning fossil fuels or biomass, but heat-only boiler stations, geothermal heating, heat pumps and central solar heating are also used, as well as heat waste from factories and nuclear power electricity generation. District heating plants can provide higher efficiencies and better pollution control than localized boilers. According to some research, district heating with combined heat and power (CHPDH) is the cheapest method of cutting carbon emissions, and has one of the lowest carbon footprints of all fossil generation plants.
Energy in the United Kingdom came mostly from fossil fuels in 2021. Total energy consumption in the United Kingdom was 142.0 million tonnes of oil equivalent in 2019. In 2014, the UK had an energy consumption per capita of 2.78 tonnes of oil equivalent compared to a world average of 1.92 tonnes of oil equivalent. Demand for electricity in 2014 was 34.42 GW on average coming from a total electricity generation of 335.0 TWh.
District cooling is the cooling equivalent of district heating. Working on broadly similar principles to district heating, district cooling delivers chilled water to buildings like offices and factories. In winter, the source for the cooling can often be seawater, so it is a cheaper resource than using electricity to run compressors for cooling. Alternatively, District Cooling can be provided by a Heat Sharing Network which enables each building on the circuit to use a heat pump to reject heat to an ambient ground temperature circuit.
A ground source heat pump is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons. Ground-source heat pumps (GSHPs) – or geothermal heat pumps (GHP), as they are commonly termed in North America – are among the most energy-efficient technologies for providing HVAC and water heating, using far less energy than can be achieved by burning a fuel in a boiler/furnace or by use of resistive electric heaters.
The production of renewable energy in Scotland is a topic that came to the fore in technical, economic, and political terms during the opening years of the 21st century. The natural resource base for renewable energy is high by European, and even global standards, with the most important potential sources being wind, wave, and tide. Renewables generate almost all of Scotland's electricity, mostly from the country's wind power.
The potential for exploiting geothermal energy in the United Kingdom on a commercial basis was initially examined by the Department of Energy in the wake of the 1973 oil crisis. Several regions of the country were identified, but interest in developing them was lost as petroleum prices fell. Although the UK is not actively volcanic, a large heat resource is potentially available via shallow geothermal ground source heat pumps, shallow aquifers and deep saline aquifers in the mesozoic basins of the UK. Geothermal energy is plentiful beneath the UK, although it is not readily accessible currently except in specific locations.
Renewable energy in Australia includes wind power, hydroelectricity, solar photovoltaics, heat pumps, geothermal, wave and solar thermal energy.
Iceland is a world leader in renewable energy. 100% of Iceland's electricity grid is produced from renewable resources. In terms of total energy supply, 85% of the total primary energy supply in Iceland is derived from domestically produced renewable energy sources. Geothermal energy provided about 65% of primary energy in 2016, the share of hydropower was 20%, and the share of fossil fuels was 15%.
Renewable energy in the United Kingdom contributes to production for electricity, heat, and transport.
Geothermal power is electrical power generated from geothermal energy. Technologies in use include dry steam power stations, flash steam power stations and binary cycle power stations. Geothermal electricity generation is currently used in 26 countries, while geothermal heating is in use in 70 countries.
Renewable energy in Finland increased from 34% of the total final energy consumption (TFEC) in 2011 to 48% by the end of 2021, primarily driven by bioenergy (38%), hydroelectric power (6.1%), and wind energy (3.3%). In 2021, renewables covered 53% of heating and cooling, 39% of electricity generation, and 20% of the transport sector. By 2020, this growth positioned Finland as having the third highest share of renewables in TFEC among International Energy Agency (IEA) member countries.
Geothermal exploration began in China in the 1970s. It was initially handled by national bodies with public investments, and productive wells were transferred free of charge to the final user. Since the mid-1990s, under the framework of privatization and liberalization of the economy, national investment in exploration has been reduced. No new plants have been commissioned in the period 2000–2005. The only electricity-producing fields are located in Tibet. According to the "2005 Chinese Geothermal Environment Bulletin" by China's Ministry of Land and Resources, the direct utilization of geothermal energy in China will reach 13.76 cubic metres (486 cu ft) per second, and the geothermal energy will reach 10,769 megawatts, ranking first in the world.
Energy in Croatia describes energy and electricity production, consumption and import in Croatia.
Svartsengi power station is a geothermal power plant, which is located in the Svartsengi geothermal field, about 4 kilometres (2.5 mi) north of Grindavík, approximately 20 km (12 mi) SE of Keflavík International Airport and 45 km (28 mi) from Reykjavík. The electric power station was built in 1976 by HS Orka. It was the world's first combined geothermal power plant for electric power generation and hot water production for district heating.
Renewable energy has developed rapidly in Italy over the past decade and provided the country a means of diversifying from its historical dependency on imported fuels. Solar power accounted for around 8% of the total electric production in the country in 2014, making Italy the country with the highest contribution from solar energy in the world that year. Rapid growth in the deployment of solar, wind and bio energy in recent years lead to Italy producing over 40% of its electricity from renewable sources in 2014.
As of 2018, hydroelectric power stations in the United Kingdom accounted for 1.87 GW of installed electrical generating capacity, being 2.2% of the UK's total generating capacity and 4.2% of UK's renewable energy generating capacity. This includes four conventional hydroelectric power stations and run-of-river schemes for which annual electricity production is approximately 5,000 GWh, being about 1.3% of the UK's total electricity production. There are also four pumped-storage hydroelectric power stations providing a further 2.8 GW of installed electrical generating capacity, and contributing up to 4,075 GWh of peak demand electricity annually.
Marchwood Power Station is an 898.1 MW gas-fired power station in Marchwood, near Southampton, England. It is situated beside estuary of the River Test where it meets Southampton Water, opposite the Port of Southampton. It is built on the site of an oil-fired power station, demolished in the 1990s. The station is operated by the Marchwood Power Limited Independent Team.
Geothermal energy in Lebanon is a branch of the energy industry, expanding quickly over the last several years. According to a UNDP assessment (CEDRO project), the geothermal energy theoretically available in Lebanon is 109 GWh or 70,000 the amount of energy needed in Lebanon per year although the technologies at the time of study allow for the extraction of only 10% of that amount, i.e. 108 GWh or 7,000 times the yearly energy demand of Lebanon. Additionally, the study concludes that for reasons regarding the safety of EGS technologies, only hydrothermal techniques could be appropriate for Lebanon. These techniques theoretically allow for the extraction of only 1.2. 105 GWh. The CEDRO project proposes "an optimistic but realistic scenario" for the implementation of this technology that would allow for the production of 0.2% of the total energy demand for 2025 via geothermal means. The study includes a geothermal atlas for the country and estimates the current overall potential of geothermal heat and power generation.
Denmark is a leading country in renewable energy production and usage. Renewable energy sources collectively produced 75% of Denmark's electricity generation in 2022, and are expected to provide 100% of national electric power production from 2030. Including energy use in the heating/cooling and transport sectors, Denmark is expected to reach 100% renewable energy in 2050, up from the 34% recorded in 2021.
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