Sustainability has to come into it though. In some mediums this is less of a concern (wind perhaps), but it's paramount when it comes to hydrocarbons. The "cost

Sustainability has to come into it though. In some mediums this is less of a concern (wind perhaps), but it's paramount when it comes to hydrocarbons. The "cost" right now on sourcing energy from oil and coal does not reflect the true "price" when you take things like pollution into account. This needs to be quantified for all forms of energy collection and extraction in order to have a true representation of value/efficiency. Then solar starts to make a lot more sense.