And, further, there are indications that Apple is planning to expand its customer base later this year with a lower-cost iPhone for emerging markets (think India, China, et al.) where consumers tend to pay the full price at retail, not the subsidized contract prices we are spoiled by here.

FORBES: Is Apple 'Doomed'? Is Tim Cook Being Fired? No and No

Estimated first-year electricity cost before solar: These assumptions included base rates, fees and taxes, and factor in typical regional power loads, according to Heather Van Schoiack, spokeswoman at Clean Power Research.

WSJ: The Economics of Solar Power for Your Home