pretty good math for a pot head lolWhere I am, Progress Energy charges $123.19 per 1000 KWh used. Your 600W HPS should be around 660W at the ballast @120v. Running 12/12 equates to 7.92 KWh per day. At 31 days, this would be only 245.52 KWh per month. This would be $30.24 per month, but only for the light.
That is right in line with what my bill increased with 600wWhere I am, Progress Energy charges $123.19 per 1000 KWh used. Your 600W HPS should be around 660W at the ballast @120v. Running 12/12 equates to 7.92 KWh per day. At 31 days, this would be only 245.52 KWh per month. This would be $30.24 per month, but only for the light.