在西班牙托里多附近，建有一个1兆瓦的光能发电站。目的是在夏季枯水期卡斯特至杨水电站不能满负荷的惰况下，补充周围所需要的电力。对于这一地区而言，水和电都非常宝贵，用水来发电实际上抢夺了周围农民浇灌庄稼的田水。“太阳能墙”示范建筑的设计目的是演示利用太阳能的各 Near Toledo, Spain, there is a 1 MW light power station. The purpose is to supplement the electricity needed in the surrounding area during the summer dry season when the Karst-Yangyang Hydropower Plant is not fully loaded. For this area, water and electricity are invaluable. The use of water to generate electricity actually snatches the field water that the surrounding farmers poured on their crops. The “solar wall” demonstration building was designed to demonstrate the use of solar energy.