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What's a renewable source?
What's a renewable source?
The question seems obvious and even impertinent!
I realized that in our (Brazilian) collective imagination, a renewable source of excellence is the solar on the roof. And of course it is!
There is even the perception that solar and wind are "the" renewable sources. Hydroelectric power does not fall into this category, and again, I refer to the established common sense.
Our matrix is 70% hydraulic, which is intrinsically renewable!
When there is no sun during the day and at night, the country's matrix serves as the back up for the household that has solar energy on its roof. And when this happens, the sources that "help" includes hydraulic, wind, and thermal.
In other words, renewable such as solar also have their component of emissions as they depend on the country's matrix.
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