A lightening bolt on average contains approx 10 billion watts of power. A transformer station without lightening arresters can be shut down or destroyed if there is a direct hit or if the strike is within a few meters the EMP could shut it down or destroy it.
Please explain how a satellite or even a series of satellites can possible generate a 10 billion watt strike? You could not even get a generator in orbit big enough to create this power. Remember you have to take into account distance from satellite to ground Laser beams are no different. To generate a light does not take much power but to generate a laser beam that can do real damage takes a lot of power. Batteries won't cut it.