Hydroelectricity, or hydroelectric power, is electricity generated from hydropower. Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, 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 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, fuel, 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).
Energy in Finland describes energy and electricity production, consumption and import in Finland. Energy policy of Finland describes the politics of Finland related to energy. Electricity sector in Finland is the main article regarding electricity in Finland.
Renewable energy in Canada represented 17.3% of the Total Energy Supply (TES) in 2020, following natural gas at 39.1% and oil at 32.7% of the TES.
Energy in Switzerland is transitioning towards sustainability, targeting net zero emissions by 2050 and a 50% reduction in greenhouse gas emissions by 2030.
Denmark's western electrical grid is part of the Synchronous grid of Continental Europe whereas the eastern part is connected to the Synchronous grid of Northern Europe via Sweden.
Electricity production in Belgium reached 87.9 terawatt-hours (TWh) in 2020, with nuclear power (39%), natural gas (30%), and wind (15%) as the primary sources. Additional contributions came from biofuels and waste (7%), solar (6%), and coal (2%). In the same year, the total electricity demand was 80.9 TWh, with consumption predominantly from the industrial sector (50%), followed by commercial (25%), residential (23%), and transport (2%) sectors.
The electricity sector in Switzerland relies mainly on hydroelectricity, since the Alps cover almost two-thirds of the country's land mass, providing many large mountain lakes and artificial reservoirs suited for hydro power. In addition, the water masses drained from the Swiss Alps are intensively used by run-of-the-river hydroelectricity (ROR). With 9,052 kWh per person in 2008, the country's electricity consumption is relatively high and was 22% above the European Union's average.
Primary energy consumption in Spain in 2020 was mainly composed of fossil sources. 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%).
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.
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.
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 supply of energy resources and its consumption. The system of global energy supply consists of the energy development, refinement, and trade of energy. Energy supplies may exist in various forms such as raw resources or more processed and refined forms of energy. The raw energy resources include for example coal, unprocessed oil & gas, uranium. In comparison, the refined forms of energy include for example refined oil that becomes fuel and electricity. Energy resources may be used in various different ways, depending on the specific resource, and intended end use. Energy production and consumption play a significant role in the global economy. It is needed in industry and global transportation. The total energy supply chain, from production to final consumption, involves many activities that cause a loss of useful energy.
