How much does it cost to leave a PC on all day?

The cost of leaving a PC on all day varies based on its power consumption and local electricity rates. On average, a typical desktop PC consumes between 200 to 400 watts per hour. If we assume an average cost of $0.13 per kilowatt-hour, it could cost roughly $1 to $2 per day to leave a PC on continuously. This estimate can vary significantly depending on the specific hardware, usage patterns, and local electricity rates.