Unmanned aerial vehicles (UAVs) have been widely used in various situations, such as life rescue, environmental exploration, and wireless communication, to avoid the safety risk of human operations. Partic.
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Any must match electricity production to consumption, both of which vary significantly over time. Energy derived from and varies with the weather on time scales ranging from less than a second to weeks or longer. is less flexible than, meaning it cannot easily match the variations in demand. Thus, without storage presents special challenges to .
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