<i>Below 59 and the state’s electrical system would face cascading blackouts that would take weeks or months to restore.</i><p>Is the tolerance really this small? Afaict, in Germany this point is only reached at a -2.5 Hz deviation from the regular 50 Hz. At the -1 Hz point noted in the article, we start dropping large commercial loads from the grid. IANAEE.
Related article with a good discussion on capacity versus delivery pricing in the Texas energy market.<p><a href="https://news.ycombinator.com/item?id=26207591" rel="nofollow">https://news.ycombinator.com/item?id=26207591</a>