It continues to surprise me that the competitive power suppliers appear to hedge little or none of their supply. They either are in denial that there will ever be days that LMP prices go appreciably over average or they think they can pass it on to their customers, who in reality just won't pay $9,000 monthly power bills. They then go bankrupt en masse whenever an event like this happens (same with PJM in the "polar vortex" a few years ago). Merchant power has been a crappy business for a decade or more now because they can't lock in their forward power prices, while the natural forward buyers inexplicably aren't buying.From what I've seen, Wall Street has been on the shitty side when it comes to trading power and transmission. The dedicated proprietary trading firms (that's you, Houston) and the energy trading desks at utilities are far more adept at it.
I've seen (and confirmed through OTC brokers) some big name Wall Street Banks and Hedge Funds get absolutely smoked in the Inc/Dec markets.
To be really good at trading power, you need to be trading around generating assets. Otherwise you are dead meat on the table. This is why proprietary trading firms try to enter into firm power agreements and call options with generating companies. And that can be tough to do these days; was much more common in the 1990's.
Tangentially related, I'll be interested to see how the spinoff of Exelon's merchant fleet trades once they split. Didn't go so well with FirstEnergy/FirstEnergy Solutions.

