The power was cut because another train trashed the power line.
At a societal level the attraction of electricity is that it's fungible. Wind, Nuclear, Gas, Solar, the electricity is the same. If you need Natural Gas then too bad, no matter how cheap and readily available the Solar power or Coal is, you've got to buy Gas at any price from anyone who'll sell it to you. Individually this is at most a minor inconvenience but for a whole country it means too bad now your foreign policy is decided by people who can supply the fuel mix you need.
At a societal level the attraction of electricity is that it's fungible. Wind, Nuclear, Gas, Solar, the electricity is the same. If you need Natural Gas then too bad, no matter how cheap and readily available the Solar power or Coal is, you've got to buy Gas at any price from anyone who'll sell it to you. Individually this is at most a minor inconvenience but for a whole country it means too bad now your foreign policy is decided by people who can supply the fuel mix you need.