Roger. Can't access the article without some other browser, however keep in mind that business risk is in essence a completely different factor than potential

Roger. Can't access the article without some other browser, however keep in mind that business risk is in essence a completely different factor than potential return on investment, or what turns out to be actual return. Three fundamentally different things each composed of way different variables. Regardless, they go hand-in-hand when investment is involved, the attitude at one extreme is to avoid risk as much as possible, while the other extreme will tolerate or even seek out the riskiest of ventures when they feel they will have good fortune in pursuit of unpredictably better returns which sometimes can not be achieved any other way. One thing that influences relative cost that doesn't seem to be well-represented by those using equations, is what is the source of the energy to begin with? It's too obvious. In one respect, nuclear and solar are at the same end of the spectrum where the "fuel" is so long-lasting that it virtually drops out of the equations compared to so many other things. But virtually zero may not be close enough to true zero when you consider the cost of the fuel itself plus costs to get that fuel ready for harvesting the energy it has to offer. Once everything else is in place except for actually getting the fuel into a state of readiness from how it is found in nature, few other options compare to the zero cost that solar, wind and a few others will always have in their equations. This number for solar will never go up regardless of scale, and fuel is such a major consideration it is completely tied to production as strongly as anything can be. IIRC, zero is quite a number. In a simplified way there are a lot of businesses that don't actually make money until after the initial capital expenditure has been recovered, a point of zero debt is achieved, and until another capital expenditure occurs, performance results from profits in excess of ongoing expenses. Surely the most convincing financial structures would be dependent on the most dis-similar accounting tactics, since diverse fuel sources can be nothing like each other even though they will always be tied to production, so it must not become possible to do anything but compare apples to oranges :\