bring on the theories!
In answer to the question the strip asks (any way can blame this on Bush?), the bats are it already:
Maybe it's just a failed attempt by the electric companies to create a fake power shortage in order to ramp up electric rates, like Enron and the California electric companies pulled a while back, robbing the people of California of hundreds of millions of dollars.
Of course, there's always the lovely Democratic Underground, the mossy basement of the internet where conspiracy theories grow and are nutured.