When Chief Scientist Alan Finkel’s electricity market review passed through New York a couple of years ago, the team went upstate to General Electric for presentations on various aspects of NY’s energy supply, and I was lucky enough to tag along. One session presented seasonal charts showing the wild vagaries of supply from the many different sources – gas, coal, hydro, nuclear, renewables and more – in various seasons and conditions, with dramatic peaks and valleys soaring and plunging day to day.