This document shows the historical and projected prices of diesel oil per barrel and per million British thermal units (MMBtu) for Hawaii Electric Light Company from 2010 to 2035. The prices are shown as reference prices for each year as well as high and low ranges. Over this period, the reference price of diesel oil per barrel increased from $102.34 in 2010 to a projected $288.66 in 2035, and the reference price per MMBtu increased from $17.46 to an estimated $49.26.