The logical implication of this cost-benefit calculus is that solar energy should receive considerably less support from environmental advocates than more mundane technologies like combined heat-and-power or district energy.
In the cost-benefit calculus, Iran's rulers have already judged it worth building the secret enrichment plant near Qom, worth doing sanctions-busting arms deals with nuclear-testing North Korea and worth continuing to support and train terrorist organizations such as Hamas and Hezbollah.