Instead of hooking up to expensive to construct power sources like solar cells for the purpose of clean energy, some simple life hacks may serve better. See below for how a plastic bottle placed through a temporary roof can let in sunlight giving as much energy as a 50 watt light bulb. When the bottle is filled with water, the water does not let the heat from the sun light get into the room by absorbing it and better yet providing a cooling effect if it is let to evaporate from the open top.
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