Check your bill. Most PUD customers are in the Residential and Farm Service class. Medium General Service is a rate class created just this year. They are three-phase power customers with annual power use of less than 180,000 kilowatt hours in a calendar year. It is also for single-phase service with energy consumption of more than 15,000 but less than 180,000 kilowatt hours a year.
Typical customers are churches, offices, schools and banks.
Large General Service is used to bill some of the PUD's largest customers. It is used for three-phase power customers with annual power use of more than 180,000 kilowatt hours a year. Typical customers are grocery stores, motels, hospitals, warehouses and manufacturing facilities. Finally, there are two Irrigation rate classes. They apply only to power used to run irrigation pumps for agricultural purposes.