{"entity":{"iso2":"PT","iso3":"PRT","name":"Portugal","slug":"portugal"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"annual-change-fossil-fuels","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-fossil-fuels","title":"Annual change in primary energy from fossil fuels","unit":"terawatt-hours"},"observations":[{"date":"1997-01-01","value":8.60958},{"date":"1998-01-01","value":23.3537},{"date":"1999-01-01","value":21.8297},{"date":"2000-01-01","value":-3.55866},{"date":"2001-01-01","value":-3.47929},{"date":"2002-01-01","value":15.8895},{"date":"2003-01-01","value":-14.66},{"date":"2004-01-01","value":9.35031},{"date":"2005-01-01","value":11.3812},{"date":"2006-01-01","value":-24.1948},{"date":"2007-01-01","value":-0.435074},{"date":"2008-01-01","value":-7.46161},{"date":"2009-01-01","value":-8.35539},{"date":"2010-01-01","value":-13.185},{"date":"2011-01-01","value":-2.03714},{"date":"2012-01-01","value":-11.6906},{"date":"2013-01-01","value":-2.06866},{"date":"2014-01-01","value":-3.1359},{"date":"2015-01-01","value":16.6815},{"date":"2016-01-01","value":0.490837},{"date":"2017-01-01","value":18.3785},{"date":"2018-01-01","value":-15.8266},{"date":"2019-01-01","value":-5.53607},{"date":"2020-01-01","value":-34.7284},{"date":"2021-01-01","value":-3.32786},{"date":"2022-01-01","value":6.74491},{"date":"2023-01-01","value":-13.942},{"date":"2024-01-01","value":-10.2507},{"date":"2025-01-01","value":4.14438}],"summary":{"latest_period":"2025-01-01","latest_value":4.14438,"max":23.3537,"mean":-1.41447,"min":-34.7284,"of":76,"rank":29,"trend":"volatile"}}