Other mistake: Where does the fire in the gas pipes come from? Even though a lot of gas - and thereby pressure - is directed towards the power station, why do they blow up under ground far away from the power station?
Suggested correction: The pressure caused a pipe to crack or similar, and some gas leaked out to where it shouldn't be, and it got ignited. You couldn't count on that happening, though. The idea was probably to have the pipes/valves blow out at the power station and flood it with gas.
This isn't a strong correction, especially as it admits that it likely wouldn't have worked and uses a lot of conjecture.
Factual error: 0.7% of the electricity generated in West Virginia (as of 2011) is from natural gas. The plant in the movie would have been a peaking unit, only operated during the day. Shutting down a power plant that is not operating would not cause a black out. Further evidence that the unit is not operating is that only three security guards seem to be on the premises. You can not operate a power plant with three security guards.
Suggested correction: As I understood it, the original idea was to use the power plant's computer to shut down the power grid, not the plant itself. How the explosion then accomplished the same, I have no idea.
This correction does not actually address the mistake properly.
