================================ Visualizing Energy visualizingenergy.org ================================ Title: Consumption of primary energy by source in the United States, 1780-2021 Time span: 1780-2021 ================================ Variable: Primary energy use in the United States, 1780-2021 Source: O'Connor, Peter A., and Cutler J. Cleveland. 2014. "U.S. Energy Transitions 1780–2010" Energies 7, no. 12: 7955-7993. https://doi.org/10.3390/en7127955 Source link: https://doi.org/10.3390/en7127955 Data accessed: not applicable Description: This series report primary energy, which is defined as energy stocks and flows in nature before they are transformed by humans into more useful forms. From 1949 forward, O'Connor and Cleveland (2014) use data on primary energy use from the energy accounts of the U.S. Energy Information Administration (EIA) (https://www.eia.gov/). I modified their series on electricity generation from primary sources (nuclear, solar, hydro, wind, and geothermal). I use the energy content of the electricity generated from those sources (1 kWh = 3412 Btu = 3,600,000 joules) rather than the so-called "fossil fuel equivalency approach." See the EIA link below for discussion of those approaches. O'Connor and Cleveland describe the methods used to estimate energy use prior to 1950 from a variety of primary and secondary sources. Readers interested in specific details should consult O'Connor's (2014) PhD Dissertation. That work follows the general methodology developed by Gales et al. (2007) for Sweden, Holland, Italy, and Spain. Additional links: U.S. Energy Information Administration (EIA): "EIA offers two approaches to compare renewable electricity generation with other sources," August 22, 2019, https://www.eia.gov/todayinenergy/detail.php?id=41013O’Connor, Peter Albert. “Aspects of Energy Transitions: History and Determinants.” PhD Dissertation, Boston University, 2014. OpenBU. https://hdl.handle.net/2144/14287Gales, Ben, Astrid Kander, Paolo Malanima, and Mar Rubio. “North versus South: Energy Transition and Energy Intensity in Europe over 200 Years.” European Review of Economic History 11, no. 2 (August 1, 2007): 219–53. https://doi.org/10.1017/S1361491607001967.