The purchase price of a three-phase motor represents 1% to 2% of the total operating cost of the motor. Use the simple calculator below to estimate your energy costs to operate your motor by entering four pieces of information two of which are located on the nameplate of your motor.
Horsepower - The size of the motor, found on the nameplate of the motor (For example: 1HP, 25HP or 100HP)
Yearly Operating Hours - The easiest approach is to determine how many hours a week the motor runs and multiply by 52 (For example: 8 hours day X 6 days = 48 hours a week X 52 = 2,496 hours a year) (Caution: The maximum number of operating hours is 8,760 or 24 hours a day, 365 days a year)
Energy Cost per kilowatt-hour - If you have access to an electric bill, the easiest way to estimate your cost per kilowatt-hour is to divide the total bill amount by the total kilowatt-hours used in the month. (For example: If your bill indicated you used 2, 325 kWh and your total bill was $186.00 then you are paying $0.08 per kWh ($186.00 / 2325 = .08) If you don't have access to your electric bill, use $0.10 as an estimate. Enter as a decimal: .08 for 8 cents or .10 for 10 cents, etc.
NEMA Nominal or Full Load Efficiency - The NEMA Nominal or Full Load Efficiency is located on the motor's nameplate and is shown as a percentage. (For example: 85.5% or 90.2%) Enter the number as a decimal: .855 for 85.5% or .902 for 90.2%, etc. (NOTE: For the purposes of this estimate, the motor's load factor is assumed to be 100%)
Once you have estimated your current energy costs to operate the motor, order a FREE copy of MotorMaster+ software to investigate the savings available by purchasing and installing a NEMA Premium® motor.
To investigate further, click here to order your FREE copy of MotorMaster+ software. If experience a problem or have questions call the toll-free Motor Hotline at 800-388-9294.
NYSERDA - New York State Energy $mart Premium-Efficiency Motors Program
