{"entity":{"iso2":"PL","iso3":"POL","name":"Poland","slug":"poland"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"percentage-change-energy-by-source","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/percentage-change-energy-by-source","title":"Year-to-year percentage change in primary energy use by source","unit":"%"},"observations":[{"date":"2012-01-01","value":450.0},{"date":"2013-01-01","value":36.3636},{"date":"2014-01-01","value":366.667},{"date":"2015-01-01","value":714.286},{"date":"2016-01-01","value":117.544},{"date":"2017-01-01","value":33.0645},{"date":"2018-01-01","value":81.8182},{"date":"2019-01-01","value":136.891},{"date":"2020-01-01","value":175.502},{"date":"2021-01-01","value":100.951},{"date":"2022-01-01","value":111.203},{"date":"2023-01-01","value":33.6646},{"date":"2024-01-01","value":59.0224},{"date":"2025-01-01","value":34.1188}],"summary":{"latest_period":"2025-01-01","latest_value":34.1188,"max":714.286,"mean":175.078,"min":33.0645,"of":76,"rank":25,"trend":"volatile"}}