A method. A power and frequency regulation meter, to which AC power is supplied through an AC power line, includes: an AC frequency meter that receives AC power from an AC power line and measures a current AC frequency on the AC power line; an AC power consumption meter that receives AC power from the AC power line and measures a current power consumption on the AC power line over a period of time; an AC power consumption display that receives AC power from the AC power line and displays power consumption; a frequency regulation credits display that displays a frequency regulation credit. A power consumption moving average of a last N power current power consumptions measured by the AC power consumption meter is calculated. A credits or debit is calculated based on a current power consumption, the current AC frequency and the power consumption moving average.