October 23, 2018: things look a bit better in New England today. Spike in prices a bit lower this morning. But note the reliance on natural gas. What a huge shift from just a few years ago.
Last December 27, 2017, electricity prices spiked to $500/MWH -- see this link.
I see that early this morning, ISO New England had a short-in-duration spike to nearly $500/MWH; appears to have lasted about an hour or so.