{"entity":{"iso2":"PT","iso3":"PRT","name":"Portugal","slug":"portugal"},"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":1.301},{"date":"1967-01-01","value":0.205},{"date":"1968-01-01","value":-0.293},{"date":"1969-01-01","value":1.123},{"date":"1970-01-01","value":-0.506999},{"date":"1971-01-01","value":0.366},{"date":"1972-01-01","value":0.916},{"date":"1973-01-01","value":0.239},{"date":"1974-01-01","value":0.503},{"date":"1975-01-01","value":-1.418},{"date":"1976-01-01","value":-1.623},{"date":"1977-01-01","value":5.179},{"date":"1978-01-01","value":0.845},{"date":"1979-01-01","value":0.401999},{"date":"1980-01-01","value":-3.198},{"date":"1981-01-01","value":-2.996},{"date":"1982-01-01","value":1.902},{"date":"1983-01-01","value":1.105},{"date":"1984-01-01","value":1.739},{"date":"1985-01-01","value":0.927999},{"date":"1986-01-01","value":-2.179},{"date":"1987-01-01","value":0.639},{"date":"1988-01-01","value":3.08},{"date":"1989-01-01","value":-6.414},{"date":"1990-01-01","value":3.338},{"date":"1991-01-01","value":-0.113999},{"date":"1992-01-01","value":-4.397},{"date":"1993-01-01","value":3.892},{"date":"1994-01-01","value":2.12},{"date":"1995-01-01","value":-2.315},{"date":"1996-01-01","value":6.418},{"date":"1997-01-01","value":-1.656},{"date":"1998-01-01","value":-0.122001},{"date":"1999-01-01","value":-5.697},{"date":"2000-01-01","value":4.037},{"date":"2001-01-01","value":2.711},{"date":"2002-01-01","value":-6.234},{"date":"2003-01-01","value":7.923},{"date":"2004-01-01","value":-5.854},{"date":"2005-01-01","value":-5.138},{"date":"2006-01-01","value":6.188},{"date":"2007-01-01","value":-0.892},{"date":"2008-01-01","value":-3.228},{"date":"2009-01-01","value":1.486},{"date":"2010-01-01","value":7.863},{"date":"2011-01-01","value":-4.612},{"date":"2012-01-01","value":-5.914},{"date":"2013-01-01","value":8.108},{"date":"2014-01-01","value":1.839},{"date":"2015-01-01","value":-6.90849},{"date":"2016-01-01","value":7.06249},{"date":"2017-01-01","value":-9.826},{"date":"2018-01-01","value":6.496},{"date":"2019-01-01","value":-3.575},{"date":"2020-01-01","value":3.26458},{"date":"2021-01-01","value":-0.175036},{"date":"2022-01-01","value":-5.35954},{"date":"2023-01-01","value":5.491},{"date":"2024-01-01","value":2.853},{"date":"2025-01-01","value":-0.0220003}],"summary":{"latest_period":"2025-01-01","latest_value":-0.0220003,"max":8.108,"mean":0.181583,"min":-9.826,"of":77,"rank":39,"trend":"volatile"}}