A big challenge for the solar industry itself it’s to teach people how the solar panels work.

Solar cells convert the sun’s energy into electricity. Whether they’re adorning your calculator or orbiting our planet on satellites, they rely on the photoelectric effect: the ability of matter to emit electrons when a light is shone on it.

Silicon is what is known as a semiconductor, meaning that it shares some of the properties of metals and some of those of an electrical insulator, making it a key ingredient in solar cells.

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PANEL SOLAR

Yesterday while I was with a Raymondville customer, I was asked what would happen if the electric grid fails. I told him that the solar panels are disconnected from the electricity for two important reasons:
a)The first one is by the UL1741 standard that determines “if the electricity fails in the house, for the safety of the lighting company and the employees, the solar system must cut off and so does the energy it supplies to the grid” so if any employee of the electric company is doing maintenance on the solar system lines It shouldn’t allow electricity to the lines.
b)The second reason is they aren’t designed to work with batteries because they are installed in systems that are designed to work grid connected.
This means that in the absence of electricity there is no way to identify the frequency and voltage to which the solar system must adapt and therefore it doesn’t know at what frequency and voltage it must deliver the energy.

Alejandro Peña
Mardel Souza Inc
alexpena@ausasolar.com

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