GMAT Sentence Correction (SC) | There are hopeful signs that we are shifting away from our

"It" does not refer to "ten times the energy" - a pronoun cannot refer to a group of words such as this one - a pronoun has to refer to a noun (or a noun phrase).

The point is that the pronoun "it" does not haveany antecedent (nouns such "energy" or "wind power" are not suitable
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