{"entity":{"iso2":"UK","iso3":"GBR","name":"United Kingdom","slug":"united-kingdom"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"annual-change-hydro","source":"Energy Institute - Statistical Review of World Energy (2026); Smil (2017) \u2013 with major processing by Our World in Data","source_url":"https://ourworldindata.org/grapher/annual-change-hydro","title":"Annual change in primary energy from hydropower","unit":"terawatt-hours"},"observations":[{"date":"1966-01-01","value":-0.0760002},{"date":"1967-01-01","value":0.349},{"date":"1968-01-01","value":-1.163},{"date":"1969-01-01","value":-0.466},{"date":"1970-01-01","value":1.28},{"date":"1971-01-01","value":-1.163},{"date":"1972-01-01","value":0.0},{"date":"1973-01-01","value":0.465},{"date":"1974-01-01","value":0.233},{"date":"1975-01-01","value":-0.233},{"date":"1976-01-01","value":0.698},{"date":"1977-01-01","value":-0.582},{"date":"1978-01-01","value":0.117},{"date":"1979-01-01","value":0.232},{"date":"1980-01-01","value":-0.349},{"date":"1981-01-01","value":0.465},{"date":"1982-01-01","value":0.117},{"date":"1983-01-01","value":0.0},{"date":"1984-01-01","value":0.0},{"date":"1985-01-01","value":-0.5818},{"date":"1986-01-01","value":0.8141},{"date":"1987-01-01","value":-0.5815},{"date":"1988-01-01","value":0.6978},{"date":"1989-01-01","value":-0.1163},{"date":"1990-01-01","value":0.3489},{"date":"1991-01-01","value":-0.5815},{"date":"1992-01-01","value":0.8141},{"date":"1993-01-01","value":-1.0467},{"date":"1994-01-01","value":0.8141},{"date":"1995-01-01","value":-0.465199},{"date":"1996-01-01","value":-1.25604},{"date":"1997-01-01","value":1.00018},{"date":"1998-01-01","value":0.721474},{"date":"1999-01-01","value":0.217983},{"date":"2000-01-01","value":-0.249852},{"date":"2001-01-01","value":-1.0311},{"date":"2002-01-01","value":0.732836},{"date":"2003-01-01","value":-1.55978},{"date":"2004-01-01","value":1.61676},{"date":"2005-01-01","value":0.0784402},{"date":"2006-01-01","value":-0.329493},{"date":"2007-01-01","value":0.483897},{"date":"2008-01-01","value":0.0638819},{"date":"2009-01-01","value":0.0867062},{"date":"2010-01-01","value":-1.63652},{"date":"2011-01-01","value":2.10037},{"date":"2012-01-01","value":-0.382682},{"date":"2013-01-01","value":-0.60756},{"date":"2014-01-01","value":1.18634},{"date":"2015-01-01","value":0.40942},{"date":"2016-01-01","value":-0.926683},{"date":"2017-01-01","value":0.511215},{"date":"2018-01-01","value":-0.438499},{"date":"2019-01-01","value":0.4896},{"date":"2020-01-01","value":0.9453},{"date":"2021-01-01","value":-1.4598},{"date":"2022-01-01","value":-0.350801},{"date":"2023-01-01","value":0.396101},{"date":"2024-01-01","value":0.3319},{"date":"2025-01-01","value":-0.7098}],"summary":{"latest_period":"2025-01-01","latest_value":-0.7098,"max":2.10037,"mean":0.00789667,"min":-1.63652,"of":77,"rank":55,"trend":"volatile"}}