Hydroelectricity, or hydroelectric power, is electricity generated from hydropower. Hydropower supplies one sixth of the world's electricity, almost 4,500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. However, when constructed in lowland rainforest areas, where part of the forest is inundated, substantial amounts of greenhouse gases may be emitted.
The electricity sector in Norway relies predominantly on hydroelectricity. A significant share of the total electrical production is consumed by national industry.
Renewable energy plays an important and growing role in the energy system of the European Union. The Europe 2020 strategy included a target of reaching 20% of gross final energy consumption from renewable sources by 2020, and at least 32% by 2030. The EU27 reached 22% in 2020 and 23% in 2022, up from 9.6% in 2004. These figures are based on energy use in all its forms across all three main sectors, the heating and cooling sector, the electricity sector, and the transport sector.
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.
Chile's total primary energy supply (TPES) was 36.10 Mtoe in 2014. Energy in Chile is dominated by fossil fuels, with coal, oil and gas accounting for 73.4% of the total primary energy. Biofuels and waste account for another 20.5% of primary energy supply, with the rest sourced from hydro and other renewables.
Energy in Mexico describes energy and electricity production, consumption and import in Mexico.
Low-carbon electricity or low-carbon power is electricity produced with substantially lower greenhouse gas emissions over the entire lifecycle than power generation using fossil fuels. The energy transition to low-carbon power is one of the most important actions required to limit climate change.
According to the International Hydropower Association, Canada is the fourth largest producer of hydroelectricity in the world in 2021 after the United States, Brazil, and China. In 2019, Canada produced 632.2 TWh of electricity with 60% of energy coming from Hydroelectric and Tidal Energy Sources).
The energy sector in Switzerland is, by its structure and importance, typical of a developed country. Apart from hydroelectric power and firewood, the country has few indigenous energy resources: oil products, natural gas and nuclear fuel are imported, so that in 2013 only 22.6% of primary energy consumption was supplied by local resources.
The electricity sector in France is dominated by its nuclear power, which accounted for 71.7% of total production in 2018, while renewables and fossil fuels accounted for 21.3% and 7.1%, respectively. France has the largest share of nuclear electricity in the world, and together with renewable energy supplies, this has helped its grid achieve very low carbon intensity.
Primary energy consumption in Spain in 2015 was mainly composed of fossil fuels. The largest sources are petroleum (42.3%), natural gas (19.8%) and coal (11.6%). The remaining 26.3% is accounted for by nuclear energy (12%) and different renewable energy sources (14.3%). Domestic production of primary energy includes nuclear (44,8%), solar, wind and geothermal (22,4%), biomass and waste (21,1%), hydropower (7,2%) and fossil (4,5%).
Energy in Jordan describes energy and electricity production, consumption and import in Jordan. Jordan is among the highest in the world in dependency on foreign energy sources, with 96% of the country's energy needs coming from imported oil and natural gas from neighboring Middle Eastern countries. This complete reliance on foreign oil imports consumes a significant amount of Jordan's GDP. This led the country to plan investments of $15 billion in renewable and nuclear energy. To further address these problems, the National Energy Strategy for 2007-2020 was created which projects to boost reliance on domestic energy sources from 4 per cent to 40 per cent by the end of the decade.
Latvia is a net energy importer. Primary energy use in Latvia was 49 TWh, or 22 TWh per million persons in 2009. In 2018, electricity consumption per capita was 3731 kWh.
Primary energy use in Slovakia was 194 TWh and 36 TWh per million inhabitants in 2009.
Total primary energy supply (TPES) in Slovenia was 6.80 Mtoe in 2019. In the same year, electricity production was 16.1 TWh, consumption was 14.9 TWh.
Approximately 44% of primary energy is from renewable energy sources in New Zealand. Approximately 87% of electricity comes from renewable energy, primarily hydropower and geothermal power.
Renewable energy in Thailand is a developing sector that addresses the country’s present high rate of carbon emissions. Several policies, such as the Thirteenth Plan or the Alternative Energy Development Plan, set future goals for increasing the capacity of renewable energy and reduce the reliance of nonrenewable energy. The major sources of renewable energy in Thailand are hydro power, solar power, wind power, and biomass, with biomass currently accounting for the majority of production. Thailand’s growth is hoped to lead to renewable energy cost reduction and increased investment.
Uzbekistan had a total primary energy supply (TPES) of 48.28 Mtoe in 2012. Electricity consumption was 47.80 TWh. The majority of primary energy came from fossil fuels, with natural gas, coal and oil the main sources. Hydroelectricity, the only significant renewable source in the country, accounted for about 2% of the primary energy supply. Natural gas is the source for 73.8% of electricity production, followed by hydroelectricity with 21.4%.
Myanmar had a total primary energy supply (TPES) of 16.57 Mtoe in 2013. Electricity consumption was 8.71 TWh. 65% of the primary energy supply consists of biomass energy, used almost exclusively (97%) in the residential sector. Myanmar’s energy consumption per capita is one of the lowest in Southeast Asia due to the low electrification rate and a widespread poverty. An estimated 65% of the population is not connected to the national grid. Energy consumption is growing rapidly, however, with an average annual growth rate of 3.3% from 2000 to 2007.
World energy supply and consumption refers to the global primary energy production, energy conversion and trade, and final consumption of energy. Energy can be used in various different forms, as processed fuels or electricity, or for various different purposes, like for transportation or electricity generation. Energy production and consumption are an important part of the economy. A serious problem concerning energy production and consumption is greenhouse gas emissions. Of about 50 billion tonnes worldwide annual total greenhouse gas emissions, 36 billion tonnes of carbon dioxide was emitted due to energy in 2021.
