Quantcast
Popular
iStock

Response to Forbes: Stop Inaccuracies—100% Renewable Energy Is Possible

This is a response to James Conca's article in Forbes on June 26, "Debunking the Unscientific Fantasy of 100% Renewables."

Conca's article describes a paper published in the Proceedings of the National Academy of Sciences (PNAS) by Chris Clack and coauthors on June 19, criticizing a paper colleagues and I authored in the same journal in 2015. Our original paper showed that the U.S. can transition to 100% clean, renewable energy in all energy sectors without coal, nuclear power or biofuels. In this response, I show that Conca was negligent by not reporting on our response in PNAS and by seriously misrepresenting facts.


Conca's article starts with two misrepresentations. First, Conca points to the Clack critique in PNAS but nowhere does he mention that PNAS published our response to Clack equally and simultaneously. In fact, PNAS gave us the last words by not allowing Clack to respond to us. Our main conclusion, which PNAS published, was "The premise and all error claims by Clack et al. about Jacobson et al. are demonstrably false. We reaffirm Jacobson et al.'s conclusions." Conca did not report this.

Second, Conca states in the first sentence that "twenty-one prominent scientists issued a sharp critique," but fails to point out that Clack and coauthors' own disclosure published in their paper indicates that only three out of 21 coauthors performed any type of research for the article. The remaining 18 did no research whatsoever, merely contributing to writing the paper. Of the three authors who did perform research, one has admitted publicly, "I am not an energy expert" (see 15 minutes and 32 seconds into this UCLA debate. In the meantime, our 100% clean, renewable energy peer-reviewed papers have collectively had more than 85 researcher-coauthors and more than 35 anonymous peer reviewers.

Third, as pointed out in our published response, there were zero mathematical modeling errors in our underlying model as claimed by Clack. This clarifies an inaccurate quote Conca attributes to me, "…there is not a single error in our paper." Not only did Conca never interview me to obtain such a quote, but the misquote is wrong on its face, since we acknowledge in our PNAS response (which Conca does not cite) our failure to be clear in our paper about one particular assumption and our neglect of one cost. However, while we were not clear in our original paper, there was no underlying model error, contradicting Clack's major contention in his paper.

Specifically, in one instance, Clack falsely claimed we had a model error because he believed that a number in a table of ours was a maximum value when, in fact, the text clearly indicated that the number was an annual average number that varied in time, not a maximum number. Nowhere in the text was the word "maximum" used to describe that number. Thus, Clack made up out of thin air the claim that the number was a maximum. Clack and all coauthors were informed their claim was an error through a document sent to him by us through PNAS prior to publication of their article but still refused to correct it. One must wonder what the motivation is of authors who are informed of an error yet refuse to correct it.

Conca's article repeats another one of Clack's false claims. Namely, the claim that our goal of using 100% clean, renewable energy will increase costs if we exclude nuclear power and coal with carbon capture, stating that our doing so is "at complete odds with serious analyses and assessments, including those performed by the Intergovernmental Panel on Climate Change, the National Oceanic and Atmospheric Administration, the National Renewable Energy Laboratory, the International Energy Agency and most of academia."

However, as stated in our PNAS-published response to Clack that Conca negligently fails to cite, the IPCC says the exact opposite: "Without support from governments, investments in new nuclear power plants are currently generally not economically attractive within liberalized markets, ..." Further, unlike in our studies, neither the IPCC, NOAA, NREL, nor the IEA has ever performed or reviewed a cost analysis of grid stability with near 100% clean, renewable energy so could not possibly have come to the conclusion claimed by Conca.

Conca, then makes a misleading and irrelevant statement. He says that we "assume a nuclear war every 30 years or so." The PNAS study he is criticizing says nothing of the sort. He fails to tell readers he is referring to a completely different paper that I wrote from 2009 that estimated the upper-limit risk of nuclear war from nuclear weapons proliferation. However, just like he negligently failed to report our response published in PNAS, Conca failed to report the lower-limit risk of nuclear war as stated in the 2009 paper, zero nuclear wars. Why would he report only the upper-limit of a risk rather than both the upper and lower-limit risks?

Conca then claims we assumed 15 million acres covered by wind and solar, which is wrong, but even if it were correct, he doesn't realize this is only 0.66% of U.S. land area to replace all fossil fuels. He forgets that the 1.7 million active and 2.3 million inactive oil and gas wells alone in the U.S. plus the 20,000 new ones each year occupy more than 1% of U.S. land area for the roads, well pads, and storage facilities.

Conca then falsely claims we proposed to add new hydroelectric installations equivalent to 600 Hoover dams when our paper clearly calls for zero new dams. We propose only to increase the hydropower maximum discharge rate by adding turbines without increasing the annual hydropower energy output (thus no change in the annual amount of water in any reservoir). The concept of adding turbines to the outside of existing hydropower dams to increase the maximum discharge rate while keeping annual hydropower energy constant was a new idea that works. The legitimate question is, what is the maximum discharge rate that is practical relative to other options by 2050, not whether it is possible to increase the discharge rate.

Regardless, an alternate solution to increasing the hydropower discharge rate is to increase the discharge rate of concentrated solar power (CSP) and/or adding batteries. Both methods results in low-cost solutions as illustrated for the United States and Canada here. These results contradict Clack's premise that our nation's energy can't run 100% on wind, water and solar power alone at low cost.

Conca further criticizes underground storage in rocks, but it is inexpensive (less than 1/300th the cost per unit energy stored than batteries) and a form of district heat. Sixty percent of Denmark's heat is from district heating.

In sum, debate about our energy future can be constructive and is certainly encouraged. But inaccurate statements about scientific work and amplifications of those inaccuracies help no one. Had Conca read our PNAS response at all, he would not have made the errors he did. However, my colleagues and I are always seeking to improve our methods and calculations. Our goals are to better the quality of life of everyone by determining the best ways to provide clean, renewable, and reliable energy while creating jobs and improving people's health and reducing costs. Hopefully others share these goals, regardless of political party affiliation.

Show Comments ()
Sponsored
Rice University marine biologist Adrienne Correa takes samples at a reef in Flower Garden Banks. Jesse Cancelmo / Rice University

Hurricane Harvey Runoff Threatens Coral Reefs

Hurricane Harvey's record rains didn't just unleash a torrent of floodwaters into the Gulf of Mexico—this freshwater could be harming coral reefs which require saltwater to live, according to new research.

After Harvey dumped more than 13 trillion gallons of rain over southeast Texas, researchers detected a 10 percent drop in salinity at the Flower Garden Banks National Marine Sanctuary, located 100 miles off the coast of Galveston, Texas.

Keep reading... Show less

Pruitt Wants to Make the EPA Less Accountable to the Public

When the U.S. Environmental Protection Agency (EPA) breaks the law by missing deadlines, allowing polluters to violate regulations that protect our health and environment, one way the public holds it accountable is by taking the agency to court. Scott Pruitt and his corporate polluter allies see this as a problem, so Monday, the administrator moved to curtail the agency's practice of settling lawsuits with outside groups, making it easier to skirt the law.

"Pruitt's doing nothing more than posturing about a nonexistent problem and political fiction," John Walke, director of the Natural Resources Defense Council's Climate and Clean Air program said in reaction. "His targeting of legal settlements, especially where EPA has no defense to breaking the law, will just allow violations to persist, along with harms to Americans."

Keep reading... Show less
Oil on the surface of the Gulf of Mexico after the 2010 Deepwater Horizon disaster. Julie Dermansky

Nearly 400,000 Gallons of Oil Spews Into Gulf of Mexico, Could Be Largest Spill Since Deepwater Horizon

Last week, a pipe owned by offshore oil and gas operator LLOG Exploration Company, LLC spilled up to 393,000 gallons of oil into the Gulf of Mexico, reminding many observers of the Deepwater Horizon explosion seven years ago that spewed approximately 210 million gallons of crude into familiar territory.

Now, a report from Bloomberg suggests that the LLOG spill could be the largest in the U.S. since the 2010 BP blowout, according to data from the U.S. Bureau of Safety and Environmental Enforcement (BSEE).

Keep reading... Show less
Shutterstock

Big Food Is Worried About Millennials Avoiding Animal Products

By Nathan Runkle

Hundreds of leaders from fast-food chains, marketing agencies and poultry production companies recently gathered in North Carolina for the 2017 Chicken Marketing Summit to play golf and figure out how to make you eat more animals.

One session focused on marketing chicken to millennials. Richard Kottmeyer, a senior managing partner at Fork to Farm Advisory Services, explained to the crowd that millennials are "lost" and need to be "inspired and coached." His reasoning? Because there are now "58 ways to gender identify on Facebook." Also, because most millennial women take nude selfies, the chicken industry needs to be just as "naked" and transparent.

Keep reading... Show less
Sponsored

Strange Days: Ex-Hurricane Ophelia Batters Ireland Under Orange Skies

By Dr. Jeff Masters and Bob Henson

Ex-Hurricane Ophelia hit Ireland hard with full hurricane-like fury on Monday, bringing powerful winds that caused widespread damage and power outages. At least two deaths have been reported from trees falling on cars, and The Irish Times said at least 360,000 ESB Networks customers lost power in Ireland because of the storm.

Keep reading... Show less
GMO
PBouman / Shutterstock

EPA Limits Use of Problematic Herbicide Dicamba—But Is That Enough?

By Dan Nosowitz

Dicamba has been in use as a local pesticide for decades, but it's only recently that Monsanto has taken to using it in big, new ways. The past two years have seen the rollout of dicamba-resistant seed for soybean and cotton, as well as a new way to apply it: broad spraying.

But dicamba, it turns out, has a tendency to vaporize and drift with the wind, and it if lands on a farm that hasn't planted Monsanto's dicamba-resistant seed, the pesticide will stunt and kill crops in a very distinctive way, with a telltale cupping and curling of leaves, as seen above. Drift from dicamba has affected millions of acres of crops, prompting multiple states to issue temporary bans on the pesticide. Farmers have been taking sides, either pro-dicamba or anti, and at least one farmer has been killed in a dispute over its use.

Keep reading... Show less
Sponsored
Runoff from a farm field in Iowa during a rain storm. Lynn Betts / U.S. Department of Agriculture, Natural Resources Conservation Service

Drinking Water for Millions in Rural America Contaminated With Suspected Carcinogen

Drinking water supplies for millions of Americans in farm country are contaminated with a suspected cancer-causing chemical from fertilizer, according to a new report by the Environmental Working Group.

The contaminant is nitrate, which gets into drinking water sources when chemical fertilizer or manure runs off poorly protected farm fields. Nitrate contaminates drinking water for more than 15 million people in 49 states, but the highest levels are found in small towns surrounded by row-crop agriculture. Major farm states where the most people are at risk include California, Iowa, Illinois, Wisconsin and Kansas.

Keep reading... Show less
www.youtube.com

Trump's Approval Rating on Hurricane Response Sinks 20 Points After Puerto Rico

President Trump's approval rating for overseeing the federal government's response to hurricanes fell by 20 points after Hurricane Maria devastated Puerto Rico, a CNN poll conducted by SSRS revealed.

Trump's approval rating for responding to hurricanes Harvey and Irma stood at 64 percent in mid-September. Just a month later, the rating dropped to 44 percent.

Keep reading... Show less
Sponsored

mail-copy

Get EcoWatch in your inbox