The Hokkaido Electric Power Network said on the 30th that there is a possibility that the "reserve rate", which indicates the surplus power supply capacity, will fall below 5% within the jurisdiction of Hokkaido Electric Power Company due to the effect of accommodating to the Honshu area where the power supply and demand is tight. We have issued "Power Supply and Demand Tight Preparation Information" and are requesting households and businesses to prepare for power saving.