Demand Shifting in Hawaiʻi: The Other Half of the Energy Transition - CleanTechnica

The article "Demand Shifting in Hawaiʻi: The Other Half of the Energy Transition" from CleanTechnica examines the critical role of demand management in Oʻahu’s transition to a fully electrified, solar-dominated energy system. After removing non-civilian energy uses such as aviation fuel, maritime bunkering, and military consumption, the island’s energy demand for civilian purposes was significantly reduced through electrification of transportation, buildings, and industry. This transition lowered annual electricity demand to about 6,000 GWh, with an average load of roughly 685 MW. However, peak demand in the evenings can exceed 1,000 MW due to increased air conditioning use and electric vehicle (EV) charging, necessitating substantial generation and storage capacity that only operate during these peak periods. To address the mismatch between solar generation—peaking midday—and evening demand, demand management strategies like time-of-use pricing are essential. Hawaiian Electric already implements tariffs that incentivize electricity use during midday hours when solar output