The most charitable comment I can come up with for the just-released Department of Energy Staff Report to the Secretary on Electricity Markets and Reliability is the refusal of the authors to use what is surely a candidate for Most Overused Term of the Year: resilience. Not that resilience isn't important, but it's to their credit that the staffers responsible for telling Secretary Rick Perry sort-of what he wanted to hear understand that reliability is really what it's all about.
After all, if there's one thing that defenders of fossil fuels and nuclear power like to remind us more than anything else, it's that the sun only shines during the day and the wind only blows some of the time. It's a mantra meant to sear into our brains the idea that renewable electricity isn't reliable. And as much as the Staff Report tries to skirt the issue by eliminating the findings contained in a leaked earlier draft, it still manages to conclude that the nation's grid is more reliable now than ever:
Overall, at the end of 2016, the system had more dispatchable capacity capable of operating at high utilization rates than it did in 2002.
The New York Times put it this way:
The Energy Department report concedes that the nation’s electricity system remains reliable today, even with a sharp rise in intermittent wind and solar power, in part because natural gas generators and existing hydropower can easily fill any gaps in renewable generation.
Joe Romm has a good summary of how the authors "botched" their task of spinning the report in favor of fossil fuels, and how Perry manages to misrepresent the findings by recommending subsidies for coal and nuclear plants.
But none of this should come as a surprise to anyone who's been paying attention to the evolution of grid management. The fact is that computational capacity to anticipate minute-by-minute power-load shifts has increased dramatically in recent years. Add to that relatively modest growth in demand and the move away from large, centralized sources of electricity in favor of smaller, distributed, local sources, and you have a grid that can easily handle whatever nature and humankind can throw at it. And this is all going to continue to be the case in the case in the future, only more so. Even during this week's total eclipse, the grid was easily able to accommodate the large drops in solar's contribution to the network by drawing on gas and hydro.
Technology has a way of creeping up on you if you're not paying attention. One day you're trying to unfold a road map, the next the car is driving itself across the state.