Hi, I'm trying to calculate theoretical energy generated by a system and I'm not sure if I'm doing it right and if I understand the concept properly. Here is my thinking, any input is appreciated. 12 billion joules of energy generated over 1800 seconds equals roughly 6.8 million watts by dividing 12 billion by 1800 6.8 million watts * 8765 hours in a year = 60 billion watt hours/year or is it .00027777*12 billion joules=3.5 million watt hours then 3.5 million * 8765 hours in a year = 30 billion whr/year so basically i have joules of energy generated over a period of time, how do I convert that into total energy generated over the course of a year. I'm struggling with how to properly translate the different time periods into standard units of energy. Appreciate any help.