Not about ethanol, but about how to deal with intermittent energy. Chuck likes models and reliable sources, so this should be approved.
To paraphrase, the best location for wind and solar, Texas, would require 4 months storage to deal with wind droughts, or 8 months for solar alone. Now imagine what the numbers are up here where we get winter? Turns out the 3 months figure I've been using, was far too conservative.
In a new modeling study in the journal Patterns, Lall and Columbia PhD student Yash Amonkar, show that solar and wind potential vary widely over days and weeks, not to mention months to years. They focused on Texas, which leads the country in generating electricity from wind power and is the fifth-largest solar producer. Texas also boasts a self-contained grid that's as big as many countries', said Lall, making it an ideal laboratory for charting the promise and peril of renewable energy systems.
Drawing on 70 years of historic wind and solar-power data, the researchers built an AI model to predict the probability of a network-scale "drought," when daily production of renewables fell below a target threshold. Under a threshold set at the 30th percentile, when roughly a third of all days are low-production days, the researchers found that Texas could face a daily energy drought for up to four months straight.
Batteries would be unable to compensate for a drought of this length, said Lall, and if the system relied on solar energy alone, the drought could be expected to last twice as long -- for eight months. "These findings suggest that energy planners will have to consider alternate ways of storing or generating electricity, or dramatically increasing the capacity of their renewable systems," he said.
But let's keep converting farmland to solar, and block drilling for oil.
To paraphrase, the best location for wind and solar, Texas, would require 4 months storage to deal with wind droughts, or 8 months for solar alone. Now imagine what the numbers are up here where we get winter? Turns out the 3 months figure I've been using, was far too conservative.
In a new modeling study in the journal Patterns, Lall and Columbia PhD student Yash Amonkar, show that solar and wind potential vary widely over days and weeks, not to mention months to years. They focused on Texas, which leads the country in generating electricity from wind power and is the fifth-largest solar producer. Texas also boasts a self-contained grid that's as big as many countries', said Lall, making it an ideal laboratory for charting the promise and peril of renewable energy systems.
Drawing on 70 years of historic wind and solar-power data, the researchers built an AI model to predict the probability of a network-scale "drought," when daily production of renewables fell below a target threshold. Under a threshold set at the 30th percentile, when roughly a third of all days are low-production days, the researchers found that Texas could face a daily energy drought for up to four months straight.
Batteries would be unable to compensate for a drought of this length, said Lall, and if the system relied on solar energy alone, the drought could be expected to last twice as long -- for eight months. "These findings suggest that energy planners will have to consider alternate ways of storing or generating electricity, or dramatically increasing the capacity of their renewable systems," he said.
But let's keep converting farmland to solar, and block drilling for oil.
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