Most comments at this site tend to have a perspective generally consistent with my own. But sometimes a post will attract comments from people with a very different point of view. That occurred on a post earlier this week titled “Two More Contributions On The impossibility Of Electrifying Everything Using Only Wind, Solar, And Batteries.”

The import of all of these studies is that as renewables come to dominate the mix of electricity generation, and particularly as their share of generation goes above 50% and on towards 100%, and fossil fuel backup gets phased out, then the cost of necessary storage becomes far and away the dominant cost of the overall system. Therefore, any meaningful proposal to replace fossil fuel generation with renewables must grapple with this issue.

So what is the solution that the dissenting commenters offer for the problem of increasing need for expensive storage? They don’t offer any at all. Instead, they appear to think that the whole problem can be assumed away or ignored.

My post on Friday highlighted the work of Ken Gregory, who has attempted to quantify the costs of fully electrifying the U.S. energy system using as sources only wind, solar, and batteries. My post got circulated among my excellent colleagues in the CO2 Coalition, two of whom then provided me with links to their own work on closely-related subjects.

The two pieces are: (1) “How Many km2 of Solar Panels in Spain and how much battery backup would it take to power Germany,” by Lars Schernikau and William Smith, posted January 30, 2021 (revised April 23, 2021) at SSRN; and (2) “On the Ability of Wind and Solar Electric Generation to Power Modern Civilization,” by Wallace Manheimer, published October 7, 2021 in the Journal of Energy Research and Reviews.

Both pieces consider various cost and engineering issues involved in trying to develop a fully solar/battery or wind/solar/battery system to power a modern economy; and both quickly conclude for many reasons that such a project is completely infeasible and will surely fail.

For several years now, advocates of “decarbonizing” our energy system, along with promoters of wind and solar energy, have claimed that the cost of electricity from the wind and sun was dropping rapidly and either already was, or soon would be, less than the cost of generating the same electricity from fossil fuels.

These claims are generally based on a metric called the “Levelized Cost of Energy,” which is designed to seem sophisticated to the uninitiated, but in the real world is completely misleading because it omits the largest costs of a system where most generation comes from intermittent sources. The large omitted costs are those for storage (batteries) and transmission. But as we now careen recklessly down the road to zero emissions, how much will these omitted costs really amount to?

A guy named Ken Gregory has recently (December 20, 2021, updated January 10, 2022) come out with a Report at a Canadian website called Friends of Science with the title “The Cost of Net Zero Electrification of the U.S.A.” A somewhat abbreviated version of Gregory’s Report has also appeared at Watts Up With That here.

Gregory provides a tentative number for the additional storage costs that could be necessary for full electrification of the United States system, with all current fossil fuel generation replaced by wind and solar. That number is $433 trillion.