Electrifying Oʻahu: Shrinking the Island’s Energy System Before Decarbonizing It - CleanTechnica

The article "Electrifying Oʻahu: Shrinking the Island’s Energy System Before Decarbonizing It" from CleanTechnica emphasizes the importance of redefining Oʻahu’s energy system boundaries to focus on the island’s civilian economy rather than the entire state’s energy flows. Large quantities of petroleum used for aviation fuel, maritime bunkering, and military logistics dominate Hawaii’s overall energy statistics but largely support activities beyond the island’s local economy. By excluding these external uses, the analysis narrows the primary energy consumption on Oʻahu to about 39,000 gigawatt hours (GWh) annually, primarily from petroleum-based electricity generation, transportation fuels, and smaller shares from renewables like solar, wind, biomass, and heat pumps. A Sankey diagram visualizes these energy flows, showing that only around 6,000 GWh of this energy is converted into useful services, while the remaining 33,000 GWh is lost as rejected energy due to inefficiencies inherent