To cite energyr in publications use:

  Govan P (2018). _energyr: Data Published by the United States Federal
  Energy Regulatory Commission_. doi:10.32614/CRAN.package.energyr
  <https://doi.org/10.32614/CRAN.package.energyr>, R package version
  0.1.2, <https://CRAN.R-project.org/package=energyr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {energyr: Data Published by the United States Federal Energy Regulatory
Commission},
    author = {Paul Govan},
    year = {2018},
    note = {R package version 0.1.2},
    url = {https://CRAN.R-project.org/package=energyr},
    doi = {10.32614/CRAN.package.energyr},
  }