The DX610's electronic pest control repeller powerconsumption is rated at 1.2 Watts per hour for 110 VAC and 2.4 Watts per hour for 220 VAC. Keeping the unit plugged in for 24 hours a day, 30 days a month, 12 months a year, your total costwould be less than $1.50 for 110 VAC for the entire year (less than a large cup of coffee).