{"id":1206697,"name":"Efficiency of lighting (OWID based on Fouquet & Pearson (2007))","unit":"lumen-hours per kilowatt-hour","description":"The weighted-average efficiency of lighting in the United Kingdom. Calculated based on percentage share and efficiency data of lighting sources from Fouquet & Pearson (2006). Data represents the national average efficiency, calculated as the sum of (% share * efficiency) of each source.","createdAt":"2026-03-06T11:06:12.000Z","updatedAt":"2026-03-06T11:06:12.000Z","coverage":"","timespan":"1700-2000","datasetId":7490,"columnOrder":0,"shortName":"efficiency_of_lighting__owid_based_on_fouquet__and__pearson__2007","catalogPath":"grapher/energy/2017-10-01/lighting_efficiency_in_uk__owid_based_on_fouquet__and__pearson__2007/lighting_efficiency_in_uk__owid_based_on_fouquet__and__pearson__2007#efficiency_of_lighting__owid_based_on_fouquet__and__pearson__2007","type":"float","datasetName":"Lighting efficiency in UK - OWID based on Fouquet & Pearson (2007)","datasetVersion":"2017-10-01","nonRedistributable":false,"display":{"unit":"lumen-hours per kilowatt-hour"},"schemaVersion":1,"presentation":{},"source":{"id":31198,"name":"Lighting efficiency in UK - OWID based on Fouquet & Pearson (2007)","dataPublishedBy":"Lighting efficiency in UK - OWID based on Fouquet & Pearson (2007)","dataPublisherSource":"","link":"","retrievedDate":"2026-03-05","additionalInfo":"Data was calculated by OWID based on published figures by Fouquet & Pearson (2006). Calculated as the weighted-average efficiency of lighting in the United Kingdom. Calculated based on percentage share and efficiency data of lighting sources from Fouquet & Pearson (2006). Data represents the national average efficiency, calculated as the sum of (% share * efficiency) of each source.\n\nFor example: (share of lighting from candles * efficiency of candles) + (share of lighting from whale oil * efficiency of whale oil) + (share of lighting from kerosene * efficiency of kerosene).\n\nEfficiency is measured in lumen-hours per kilowatt-hour.\n\nReference:\n\nFouquet, R and Pearson, P J G (2006): ‘Seven Centuries of Energy Services: The Price and Use of Light in the United Kingdom (1300-2000)’, The Energy Journal, 27(1). Available at: http://eprints.lse.ac.uk/50460/ [accessed 3rd October 2017]."},"dimensions":{"years":{"values":[{"id":1700},{"id":1750},{"id":1800},{"id":1850},{"id":1900},{"id":1950},{"id":2000}]},"entities":{"values":[{"id":1,"name":"United Kingdom","code":"GBR"}]}},"origins":[]}