What direction is the 'top' of our solar system facing?

That depends on what you mean by “top.” The most natural interpretations to me are the south or north ecliptic poles, by which I mean: If you were to stick a pole through the Sun perpendicular to the Earth's orbit, it would point in the direction of the ecliptic poles. read more

The direction solar panels should face is true south, a.k.a. solar south or geographic south. To correct the compass reading, your solar installer will calculate the magnetic declination of your site. read more

Additionally, lowering the tilt angle of the panels on your solar roof can also contribute to the total economic benefits east and west-facing solar power systems provide. Panels facing directly east or directly west with a 30° tilt, produce about 20% below peak performance levels. read more