An aging, inefficient power grid
The North American grid goes back to the days of Edison. It is complex and inefficient. Electricity travels vast distances, losing power along the way. It is costly and inefficient to build enough generators to meet the high energy demands of summer, while operating below capacity for the rest of the year. And as we learned in the Northeast blackout of 2003, it is susceptible to prolonged outages for reasons out of our control.