Yet another investment scam. Problem with this tech is although cheap by comparison to others, given the thermal dynamics involved you're going to be lucky of you get back 30% of the energy you put into it. First, when you compress the CO2 with energy, you're going to get TWO byproducts, liquid CO2, the desirable one, and a buttload of heat, which is just wasted energy. Then given the temperature differences to the turbines are low, the thermal dynamic efficiency turning that energy back into electricity is also going to suck eggs. All in all this is just going to take two thirds or more of the energy put into it and turn it into heat.