Minor methodology differences regarding renewable components of certain generators and timing of underlying reporting account for additional differences between the SASB and EEI ESG reported metrics and the Form 3 Higher generation from petroleum in 2018 and 2019 and lower generation from geothermal in 2018 - 2020 reflects the fact that the Puna Geothermal Venture (PGV) plant was out of service from May 2018 until late 2020.