VFDs (also referred to as variable speed drives) can reduce output by controlling the motor speed (rpm) rather than having the motor work at a constant, almost full load only to have water flow throttled by the pivot itself. A VFD can reduce the amount of electricity (kilowatt-hours) you use in a season up to 30%. Every system is different so savings will vary.
While incorporating a VFD into your corner system will not likely reduce your connection, a demand or horsepower utility charges, it will save energy.
Additional benefits include: