Multiply $0.0195374 by the number of hours you plan to run the lights (14 hours). The cost to run the lights per day is $0.2735236 or $8.20 per month. If I have an HID (high intensity discharge) light with a 600 watt bulb in it, using the same method of calculation, it would cost me $30.90 per month.
There are 80 calories in 1 cup (8.1 fl.oz) of Silk Organic Unsweetened Soymilk. You'd need to walk 21 minutes to burn 80 calories. Visit CalorieKing to see calorie count and nutrient data for all portion sizes.
Cow's milk has about double the amount of protein as soy milk. They're both a good source of calcium (if it's added in soy milk), potassium, phosphorous, vitamin D and other nutrients. Soy and cow's milk have different types of protein. The protein in cow's milk is called casein. Often, our bodies can process and use the nutrients from animals sources better than plant sources. That's not to say you can't be a vegetarian, or that soy milk is a bad option for people.