North Korea seen from Space

A photo taken from the space reveals what North Korean regime cannot hide.
Usage of light during night time can reveal a country's economic level, and in the picture, South Korea is lit up here and there while North Korea has completely blacked out.

In North Korea, there is short of electricity. The people are not guaranteed with full-day electricity usage, while the regime builds Border Fences charged with high voltage of electricity to prevent people from defecting the country.