Section 1:50 - (B - B) Lighting within Underground community

This section gives a different view of the quality of the spaces.  Obviously as it is an underground community, no spaces would receive light without artificial lighting. Because there are four light shafts penetrating the space there is now a lot of natural light surrounding those shafts. Therefore artificial lighting will still be required to light the spaces further away from the shafts. 

The external or 'backyard' spaces receive light from the U.V lights, and the internal spaces will also use solar power for lighting. The solar panels will be different from the U.V panels and will work similar to how solar lights work in present day. These solar panels will also be located on the roof and interior walls of the light shaft, however they will be much more efficient than present day solar panels. As the panels will be significantly more efficient (approximately 85% efficiency) they easily power the underground community and store excess power. All power in the underground community will be powered by the solar panels including lighting, water heating and filtering, electricity etc.