Just as Lynne was suggesting the importance of energy storage…
If we had more efficient and distributed energy storage, then we could store wind-generated power near the source when lines are congested, and store it near demand by transmitting it when lines are not congested. Distributed energy storage gets us a one-two punch here, because it simultaneously addresses the transmission congestion problem and the wind intermittency problem.
… an established electric utility company in New Jersey, PSEG, announces a major joint venture intending to bring energy storage to the grid. A New York Times article provides a little more background.
Just speculating based on no more than a press release and a news story, but this should be very big news, eventually. PSEG has the resources to develop this project, and the intelligence to decide whether or not this will pay off, and apparently they have decided it is likely to pay off.