[time-nuts] Re: Power grid logging during the eclipse?

[Joseph B. Fitzgerald]

The change in load on the grid was fairly unusual during the eclipse with rapid changes in the bulk power system.   See the graph linked below from  grid operator ISO New England.    Y axis is megawatts of demand, while the x axis is Eastern Daylight time.    Both days were sunny, but we see the dramatic effect of the moon's shadow reducing the amount solar generation on the afternoon of the 8th.

https://bhows.org/New_England_grid_eclipse.png

It is not too surprising (to me anyway) that the grid frequency wandered around a bit during this unusual load swing.

-Joe