I found on a website that the Table Mountain in Cape Town (which is a National Park) is (fortunately occasionally) illumiated by floodlights.
Considering the size of the structure (nearly 1km high and a few km wide, much larger than any floodlit man-made structure), this requires gigantic amounts of light and energy. Probably parts of this light will reach the sky.
http://4.bp.blogspot.com/-BQ67-aIr3s...0/IMG_0027.jpg
As electricity is remarkable cheap in SA (about $0.05-0.06 / kWh) this is indeed attractive for commercial parties. But, the Eskom (energy supplier of SA) will increase energy prices considerably so rates of lighting the Table Mountain will rise.
Mountain floodlights to come at a price - Cape Times | IOL.co.za
Any ideas on this ?