Here on Earth we have the Grand Canyon, our own mini-version of Valles Marineris. Seen from space, it looks like an electrical scar.
The official explanation for it is that it has been carved out by water trickling through it over millions of years. However, it does not look like any other valley anywhere else on Earth. No other river has carved out an electric scar shaped valley.
If we stick with our hypothesis that there has been a rogue planet in our solar system, it seems more likely that the Grand Canyon is the product of a close encounter with this planet. The same planet that caused enormous damage to Mars came dangerously close to Earth as well.
If the Grand Canyon was created through discharge between Earth and a rogue planet, the entire canyon may have been carved out in less than an hour.
Such an enormous event is hard to comprehend. It is hard to even begin to imagine the power required to perform such an act of destruction in such a short time. However, we are not talking about a meteorite or a comet. We are talking about an object the size of a planet.
For perspective, we can look up industrial capacitors on YouTube to see what sort of damage such devices can do. A capacitor the size of a beer keg can easily vaporize bits of a coin or a pebble. It can blow watermelons to bits. All sorts of fun can be had.
A capacitor the size of a planet can without doubt do some serious damage to other planets. If the planet was sufficiently large and charged, it could even have blown up a planet or two on its destructive way through the solar system.