Japan's spot electricity prices have reached their highest level in over a month due to anticipated high temperatures boosting power demand and fuel supply constraints caused by the conflict in Iran. According to Jin10, the nationwide day-ahead electricity spot price in Japan rose by 2.4% on Wednesday compared to the previous day, reaching 22.36 yen per kilowatt-hour, the highest since April 9. Since the U.S. and Israel launched an attack on Iran three months ago, leading to a near-closure of the Strait of Hormuz and severe fuel supply disruptions, Japan's electricity prices have remained close to 2023 highs. The expected high temperatures may further increase cooling demand, putting upward pressure on spot electricity prices. Data from the European Centre for Medium-Range Weather Forecasts indicates that Tokyo's weather is expected to become even hotter this week. Weather agency Vaisala reports that Tokyo's temperature is forecast to exceed 31 degrees Celsius on Friday, significantly above normal levels.