Brazil Hits 92% Renewable Energy Milestone
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Brazil Hits 92% Renewable Energy Milestone
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Re: Brazil Hits 92% Renewable Energy Milestone
#2Most of it is hydropower. But most good hydropower sites are already tapped, so we shouldn't expect this source growth to keep pace in the future. So, to keep these numbers good, it's necessary to crank up the deployment of solar panels and wind turbines a lot.
Also solve the deforestation problem for good, otherwise Brazil will shoot its own feet by causing deforestation-induced droughts to decrease available hydropower.
Re: Brazil Hits 92% Renewable Energy Milestone
#3Most of it is hydropower. But most good hydropower sites are already tapped, so we shouldn't expect this source growth to keep pace in the future. So, to keep these numbers good, it's necessary to crank up the deployment of solar panels and wind turbines a lot. Also solve the deforestation problem for good, otherwise Brazil will shoot its own feet by causing deforestation-induced droughts to decrease available hydrop…
Not to mention some of it's hydropower is dirtier than coal in terms of methane & co2 produced.
https://www.newscientist.com/article/dn7046-hydroelectric-po...
Re: Brazil Hits 92% Renewable Energy Milestone
#4Most of it is hydropower. But most good hydropower sites are already tapped, so we shouldn't expect this source growth to keep pace in the future. So, to keep these numbers good, it's necessary to crank up the deployment of solar panels and wind turbines a lot. Also solve the deforestation problem for good, otherwise Brazil will shoot its own feet by causing deforestation-induced droughts to decrease available hydrop…
Not to mention some of it's hydropower is dirtier than coal in terms of methane & co2 produced. https://www.newscientist.com/article/dn7046-hydroelectric-po...
Uh, no. Nowhere in that article do they mention coal. Not do they do not do a comparison of hydro plant and fossil fuel plant emissions per megawatt-hour generated.
Re: Brazil Hits 92% Renewable Energy Milestone
#5Most of it is hydropower. But most good hydropower sites are already tapped, so we shouldn't expect this source growth to keep pace in the future. So, to keep these numbers good, it's necessary to crank up the deployment of solar panels and wind turbines a lot. Also solve the deforestation problem for good, otherwise Brazil will shoot its own feet by causing deforestation-induced droughts to decrease available hydrop…
Not to mention some of it's hydropower is dirtier than coal in terms of methane & co2 produced. https://www.newscientist.com/article/dn7046-hydroelectric-po...
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Re: Brazil Hits 92% Renewable Energy Milestone
#6Earlier quoted context omitted.
Not to mention some of it's hydropower is dirtier than coal in terms of methane & co2 produced. https://www.newscientist.com/article/dn7046-hydroelectric-po...
Uh, no. Nowhere in that article do they mention coal. Not do they do not do a comparison of hydro plant and fossil fuel plant emissions per megawatt-hour generated.
If scientists can't agree on the impact of methane, they probably can't say whether it is worse than coal or not.
Re: Brazil Hits 92% Renewable Energy Milestone
#7While it's good for the power grid to be mostly renewable energy and it may be a great milestone, let's not forget that without conversion of vehicles to renewable energy Brazil is still running its total energy requirements mostly on fossil fuels.
Re: Brazil Hits 92% Renewable Energy Milestone
#8Most of it is hydropower. But most good hydropower sites are already tapped, so we shouldn't expect this source growth to keep pace in the future. So, to keep these numbers good, it's necessary to crank up the deployment of solar panels and wind turbines a lot. Also solve the deforestation problem for good, otherwise Brazil will shoot its own feet by causing deforestation-induced droughts to decrease available hydrop…
Not to mention some of it's hydropower is dirtier than coal in terms of methane & co2 produced. https://www.newscientist.com/article/dn7046-hydroelectric-po...
Isn't this just cycling carbon in ecosystem? Same as planting tree on 100 year scale is pointless... I would imagine that hydro is ~neutral on 100 year scale, while coal is not, since we introduce carbon into ecosystem. What am I missing?
Re: Brazil Hits 92% Renewable Energy Milestone
#9Earlier quoted context omitted.
Not to mention some of it's hydropower is dirtier than coal in terms of methane & co2 produced. https://www.newscientist.com/article/dn7046-hydroelectric-po...
Uh, no. Nowhere in that article do they mention coal. Not do they do not do a comparison of hydro plant and fossil fuel plant emissions per megawatt-hour generated.
https://en.wikipedia.org/wiki/Balbina_Dam
"As a result of the methane released from its vast reservoir, proportional to its output, the Balbina Dam emits ten times more greenhouse gases than a coal plant."
Re: Brazil Hits 92% Renewable Energy Milestone
#10Earlier quoted context omitted.
Not to mention some of it's hydropower is dirtier than coal in terms of methane & co2 produced. https://www.newscientist.com/article/dn7046-hydroelectric-po...
Isn't this just cycling carbon in ecosystem? Same as planting tree on 100 year scale is pointless... I would imagine that hydro is ~neutral on 100 year scale, while coal is not, since we introduce carbon into ecosystem. What am I missing?
Produces methane, not CO2 because the plants decompose in an oxygen free environment. Because of the cycling of water throughout the year, during the dry seasons plants grow along the shoreline (which varies considerably because of the use of hydro), and then are covered up during the rainy season. This can be hundreds of kms every year.