First things first - this is not another request for a lightning rod/weather control machine/lightning power station. Basically, lightning in its current state just sets fire to whatever it hits. I think that it would be neat if it caused energy-consuming blocks (so, not your exposed solar/wind power generators) to detonate upon being hit in the same manner as applying too high a voltage (because that's exactly what's going on here).
Of course, this could already be in the code and I've never seen it before. Lightning strikes are not exactly a frequent occurrence.