Solar

• Solar technologies are either passive or active (photovoltaic cells), depending on how they catch solar energy and convert it into power

  
• The amount of solar energy that reaches the Earth is vast, easily outstripping all of the combined fossil fuel and uranium deposits in a single year

  
• The largest difficulty in gaining solar energy is position on Earth, other challenges include:

  • Being closest to the equator is the most efficient, and near a polar cap is the least
  • The difference between day and night
  • Placement of photovoltaic panels as they take up valuable land