CHARLES MAXWELL, WHO BEGAN HIS CAREER in the energy business in 1957 working for Mobil Oil, is no stranger to Barron's readers. In an article he penned nearly four years ago, Maxwell predicted that oil prices would move sharply higher by 2010, and then higher still. Maxwell, 76, got the timing and trend right, though his top price of $60 a barrel by 2010 proved far too low. "Oil is unique in that when it begins to disappear, there really aren't any good substitutes, which there are for so many other commodities," Maxwell says. "It's that lack of substitutes that forces the pricing mechanism to balance supply and demand."

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