Since last update, my sub-group of the solar team have decided on a partial solarized system for the 1/12th scale model. The system will be solarized with external batteries attached to power the model bogie. We concluded that we can't fully solarize the model because the conditions of trying to run the bogie 24 hours, 7 days a week. The solar panel provided by Miasole is not sufficient to supply enough energy. If we have more solar panels from Miasole, I think the model bogie will deplete more energy than it is receiving.
The highest efficiency for a high commercial grade solar panel is only 20%. An alternate solution is to have many of these surrounding the tracks and have a energy storage device. The solar panels can slowly harvest energy while the bogie is not running.
Talking to Ron Swenson before I left, he told me that it is possible to fully solarize the system and gave me a spreadsheet on his calculations.
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