Hydroelectricity, or hydroelectric power, is electricity produced from hydropower. In 2020 hydropower generated one sixth of the world's electricity, almost 4500 TWh, which was more than all other renewables combined and also more than nuclear power.
The energy policy of India is to increase energy in India and reduce energy poverty, with more focus on developing alternative sources of energy, particularly nuclear, solar and wind energy. India attained 63% overall energy self-sufficiency in 2017.
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 Finland grew to 38.7% of total final energy consumption by year end 2014, achieving joint second position with Latvia in terms of renewable energy consumption by share amongst the EU-28 countries, behind its neighbour Sweden in first position on a 52.6% share. The 2014 share in Finland breaks down as renewable energy providing 52% of the heating and cooling sector, 31.4% of the electricity sector and 21.6% of the transport sector. By 2014, Finland had already exceeded its 2020 target for renewable energy use under the EU renewable energy directive as shown in the table of country targets.
China is the world's leading country in electricity production from renewable energy sources, with over triple the generation of the second-ranking country, the United States. China's renewable energy sector is growing faster than its fossil fuels and nuclear power capacity, and is expected to contribute 43 percent of global renewable capacity growth. China's total renewable energy capacity exceeded 1,000GW in 2021, accounting for 43.5 per cent of the country's total power generation capacity, 10.2 percentage points higher than in 2015. The country aims to have 80 per cent of its total energy mix come from non-fossil fuel sources by 2060, and achieve a combined 1,200GW of solar and wind capacity by 2030.
Low-carbon power is electricity produced with substantially lower greenhouse gas emissions than conventional fossil fuel power generation. The energy transition to low-carbon power is one of the most important actions required to limit climate change. Power sector emissions may have peaked in 2018. During the first six months of 2020, scientists observed an 8.8% decrease in global CO2 emissions relative to 2019 due to COVID-19 lockdown measures. The two main sources of the decrease in emissions included ground transportation (40%) and the power sector (22%). This event is the largest absolute decrease in CO2 emissions in history, but emphasizes that low-carbon power "must be based on structural and transformational changes in energy-production systems".
India is world's 3rd largest consumer of electricity and world's 3rd largest renewable energy producer with 38% of energy capacity installed in the year 2020 coming from renewable sources. Ernst & Young's (EY) 2021 Renewable Energy Country Attractiveness Index (RECAI) ranked India 3rd behind USA and China. In November 2021, India had a renewable energy capacity of 150 GW consisting of solar, wind, small hydro power, bio-mass, large hydro, and nuclear. India has committed for a goal of 450 GW renewable energy capacity by 2030.
Energy in Afghanistan is provided by hydropower followed by fossil fuel and solar power. According to Da Afghanistan Breshna Sherkat (DABS), approximately 35% of Afghanistan's population has access to electricity. This covers the major cities in the country. Many rural areas do not have access to 24-hour electricity but this should change after the major CASA-1000 project is completed.
Tala Hydroelectric Power Station is a run-of-the-river type hydroelectric power station on the Wangchu River in Chukha District, Bhutan. The station consists of a 92-metre (302 ft) tall gravity dam which diverts water through a 22 km (14 mi) long headrace tunnel to the power station which contains six 170 MW Pelton turbine-generators. The difference in elevation between the dam and the power station affords the project a hydraulic head of 860 m (2,822 ft).
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.
Energy in Bhutan has been a primary focus of development in the kingdom under its Five-Year Plans. In cooperation with India, Bhutan has undertaken several hydroelectric projects whose output is traded between the countries. Though Bhutan's many hydroelectric plants provide energy far in excess of its needs in the summer, dry winters and increased fuel demand makes the kingdom a marginal net importer of energy from India.
Renewable energy in Nepal is a sector that is rapidly developing in Nepal. While Nepal mainly relies on burning biomass for its energy needs, solar and wind power is being seen as an important supplement to solve its energy crisis. The most common form of renewable energy in Nepal is hydroelectricity.
Renewable energy in Afghanistan includes biomass, hydropower, solar, and wind power. Afghanistan is a landlocked country surrounded by five other countries. With a population of less than 35 million people, it is one of the lowest energy consuming countries in relation to a global standing. It holds a spot as one of the countries with a smaller ecological footprint. Hydropower is currently the main source of renewable energy due to Afghanistan's geographical location. Its large mountainous environment facilitates the siting of hydroelectric dams and other facets of hydro energy.
Although sun and wind could supply plenty of energy in Turkey, hydropower is the only renewable energy which is fully exploited, averaging about a fifth of national electricity supply. However in drought years much less electricity is generated by hydro. Over half of capacity is renewables, and it is estimated that over half of generation could be from renewables by 2026 but Turkey has invested less in solar and wind power than similar Mediterranean countries. Turkey lacks a renewable energy plan beyond 2023 which includes transport, industry, heating and cooling as well as electricity generation. More renewable energy could be used to reduce the nation's greenhouse gas emissions and thus avoid paying other countries' carbon tariffs. The country is a net exporter of wind power equipment, but a net importer of solar power equipment. Total non-hydro renewables overtook hydro in 2021.
Renewable energy in Costa Rica supplied about 98.1% of the electrical energy output for the entire nation in 2016. Fossil fuel energy consumption in Costa Rica was 49.48 as of 2014, with demand for oil increasing in recent years. In 2014, 99% of its electrical energy was derived from renewable energy sources, about 80% of which from hydroelectric power. For the first 75 days of 2015, 100% of its electrical energy was derived from renewable energy sources and in mid 2016 that feat was accomplished for 110 consecutive days despite suboptimal weather conditions. As a country, Costa Rica has a geographic advantage over others in that its high concentration per capita of rivers, dams, and volcanoes allows for a high renewable energy output. In addition, Costa Rica is the fourth highest nation in terms of rainfall per capita: it receives an average of 2,926 mm of precipitation per year. As a smaller nation with a population of only 5 million and no major industry, the need for strong energy infrastructure is less than for larger countries of higher population density. The 1948 elimination of the military of Costa Rica freed up millions of dollars from the government defense budget which are now invested in social programs and renewable energy generation. As president of Costa Rica in 1948, José Figueres announced that the nation's former military budget would be refocused specifically in healthcare, education, and environmental protection.
Nepal had a total primary energy supply (TPES) of 10.29 Mtoe in 2012. Electricity consumption was 3.57 TWh. Most of this primary energy represents solid biofuels used in the residential sector . About 23% of the electricity is imported, with the rest almost completely supplied by hydroelectricity. Nepal also exports hydroelectricity to India in the wet season.
There is enormous potential for renewable energy in Kazakhstan, particularly from wind and small hydropower plants. The Republic of Kazakhstan has the potential to generate 10 times as much power as it currently needs from wind energy alone. But renewable energy accounts for just 0.6 percent of all power installations. Of that, 95 percent comes from small hydropower projects. The main barriers to investment in renewable energy are relatively high financing costs and an absence of uniform feed-in tariffs for electricity from renewable sources. The amount and duration of renewable energy feed-in tariffs are separately evaluated for each project, based on feasibility studies and project-specific generation costs. Power from wind, solar, biomass and water up to 35 MW, plus geothermal sources, are eligible for the tariff and transmission companies are required to purchase the energy of renewable energy producers. An amendment that introduces and clarifies technology-specific tariffs is now being prepared. It is expected to be adopted by Parliament by the end of 2014. In addition, the World Bank's Ease of Doing Business indicator shows the country to be relatively investor-friendly, ranking it in 10th position for investor protection.
Renewable energy sources are important for Azerbaijan. However, except for hydropower, few renewable energy sources are utilized. One of the alternative sources of energy is wind energy. It is also more profitable due to the cost, ecological cleanness, and its renewable properties compared to other alternative energy sources.
Zambia is potentially self-sufficient in sources of electricity, coal, biomass and renewable energy. The only energy source where the country is not self-sufficient is petroleum energy. Many of the sources of energy where the country is self-sufficient are largely unexploited. As of 2017, the country's electricity generating capacity stood at 1,901 megawatts.
In 2018, Wales generated more than 50% of its electricity consumption as renewable electricity, an increase from 19% in 2014. The Welsh Government set a target of 70% by 2030. In 2019, Wales was the world's 5th largest exporter of electricity, mainly to Ireland and England. The natural resource base for renewable energy is high by European standards, with the core sources being wind, wave, and tidal. Wales has a long history of renewable energy: in the 1880s, the first house in Wales with electric lighting powered from its own hydro-electric power station was in Plas Tan y Bwlch, Gwynedd. In 1963, the Ffestiniog Power Station was constructed, providing a large scale generation of hydroelectricity, and in November 1973, the Centre for Alternative Technology was opened in Machynlleth.
