| LED Lamps surface lighting
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During the day the light comes by the 10% transparent photovoltaic. The energy is stored and provides also at night for lighting.
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| Fire brigade can refuse extinguishing
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Who holds jet of water on something what leads up to 1,000 volts of tension? This photovoltaic switches off at 100 degrees and does not endanger the fire brigade.
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| Electic power failure in spite of own photovoltaic equipment
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Normally a net-coupled photovoltaic equipment switches off immediately if the net has no tension. Protection for electrical engineers maybe just repairing the grid.
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