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Showing posts with label Bob Wallace. Show all posts
Showing posts with label Bob Wallace. Show all posts

Tuesday, December 20, 2016

CleanTechnica Watch: Comment Analysis of Thorium Article--Volume 1



In this article I clean up behind CleanTechnica's community manager who made a total of 87 comments under an antinuclear article published on CleanTechnica. Consider it a debate where each debate partner is banned from the other's comment field :  )

Some pronuclear commenters had their remarks held for moderation (even though CleanTechnica's comment rules claim they never do that) which were subsequently never published, while others had comments deleted. I saw one instance where this community manager posted a long rebuttal ...to a comment he'd deleted! Apparently, he does this fairly routinely.

Because the CleanTechnica community manager made 17% of the 509 comments before he shut them down, I'll be parsing them by category. I'm also breaking this up into more than one volume. This is Volume 1. The community manager's arguments occasionally trip on each other but in a nutshell they are based on his erroneous insinuation that wind will always cost less everywhere and that storage will fix the intermittency problems.

Feel free to drop into that comment field to see quotes taken from it in full context.

Cost

The CleanTechnica community manager's main argument is that when wind costs less then nuclear, we should replace nuclear with it.

Using that simplistic reasoning, we should eliminate all other new low carbon sources of energy that may cost more than onshore wind (which, in the U.S., would, in addition to new nuclear, include solar PV, solar thermal, offshore wind, geothermal, and biomass). See Figure 2.

Monday, December 19, 2016

CleanTechnica Watch: Is Thorium A Future Option For Nuclear Energy?




Previous CleanTechnica antinuclear articles reviewed:


Screenshot From Documentary of Sunniva Rose, Nuclear Physicist
Sunniva Rose explained some nuclear physics terms in the documentary. Be sure to see her TEDx talk: "How is it possible to worry about global warming and not be pronuclear?"

Click here to learn more about CleanTechnica watch. 

The CleanTechnica version of this article was originally posted on the German antinuclear energy website Energy Transition.

The article is an ad for the author's book in the disguise of a review of a TV documentary that aired in October on Arte (a Franco-German TV station), promoting a thorium molten salt reactor design. I found a version with English subtitles here. I recommend that you read Myths and Misconceptions about Thorium nuclear fuel instead of watching the film. It will save you an hour and the article is far more factual.

In his first sentence he calls pressurized-water reactors "awful." I'm not convinced that a total of three incidents of note in over a half century of low carbon energy production with only one of them releasing enough radiation that will (after eighty years), result in a statistically possible total number of fatalities that are less than a percent of annual global car deaths ...fits the definition of awful.

The film clearly calls for tremendous investments in thorium nuclear, with a prototype reactor costing “a billion euros.”

If that's a "tremendous" investment, what would you call the $30 or so billion Germany has been spending annually for several years now trying to displace its existing nuclear with wind and solar? Ginormous?

Just as there are millions of ways to skin a cat, there are thousands of potential configurations for nuclear power reactors. Using a thorium fuel mixed with molten salt is just one of them and would come with its advantages and disadvantages if ever put into commercial operation. The film touted three advantages: the abundance of thorium, the potential for passive safety (lose power, the fuel drains into a big bathtub and just cools off) and less waste.

Tuesday, December 6, 2016

CleanTechnica Watch



CleanTechnica Watch will be an ongoing series of articles that discuss their antinuclear energy articles, which are typically either republished from other antinuclear energy sources or written by an assortment of antinuclear guests.

You can think of these articles as a form of public peer review.

Their policy of hoovering up antinuclear pieces to put on their website is a convenience for me in that they have become my go-to source for nuclear energy misinformation material.

In a nutshell, CleanTechnica promotes the belief that the planet can decarbonize without help from nuclear.

Reality Check

The German Energy Transition
 

Studies, and there is no shortage of them, have limited value. As any experienced engineer knows, real world data trumps theoretical calculation.

Luckily we have the German experiment (often referred to as the Energiewende or Energy Transition) which has been testing the hypothesis that a highly motivated, wealthy, industrialized nation can rapidly decarbonize its electrical grid by displacing nuclear energy with wind and solar.

The experiment isn't complete, but it has already provided a wealth of real-world data.

Putting the cost into perspective

The roughly $30 billion dollars being spent annually to expand wind and solar in Germany could build enough third generation AP 1000 nuclear reactors to fully decarbonize their grid over a ten year period (similar to what France did decades ago).

$30 billion a year would pay for forty custom built $7.5 billion Generation III AP1000 reactors over ten years.

$30B/year x 10years  = $300B

$300B/$7.5B = 40 AP1000 reactors

Add those to existing reactors and they could supply about 97% of Germany's electricity by 2025.

From the German Minister for Economic Affairs and Energy, second in command to Merkel, who was also the Federal Minister for the Environment, Nature Conservation and Nuclear Safety from 2005 to 2009:

I don’t know any other economy that can bear this burden [$30billion a year]...We have to make sure that we connect the energy switch to economic success, or at least not endanger it. Germany must focus on the cheapest clean-energy sources as well as efficient fossil-fuel-fired plants to stop spiraling power prices."

While renewable aid costs are at the “limit” of what the economy can bear, Germany will keep pushing wind and solar power, the most cost-effective renewable sources, Gabriel said. Biomass energy is too expensive and its cost structure hasn’t improved, he said.


Biomass

Growth of biomass essentially stopped when its subsidies were truncated. It currently provides roughly four percent of Germany's total energy (electricity, heat, transport) consumption.

Given the discussion about the sustainability of biomass, the question is therefore whether the Energiewende itself is sustainable. That’s one reason why the German government has slammed the brakes on biomass.

Sunday, November 27, 2016

CleanTechinca Writes Last Antinuclear Energy Article—Pigs Fly




Frankly, we primarily stopped writing about nuclear since everyone in the industry should know by now it is an industry entering its retirement stage.

...so says Zachary Shahan in yet another antinuclear article. Interestingly enough, I wrote an article earlier this year critiquing yet another of their antinuclear energy articles.

However, because of the interest (and backlash) the Before the Flood article raised, I decided it was worth communicating this point one more time [emphasis mine].

If CleanTechnica really believed that nuclear energy is “entering its retirement stage” they wouldn’t still be writing antinuclear articles.

Using Bill McKibben’s climate change war analogy, Figure 1 below lists our four main weapons against climate change in descending order of deployment:

Figure 1: Low Carbon Sources of Energy in United States via 2016 BP Review

Pronuclear comment is not welcome at CleanTechnica. From their original comment policy page:

This site is not the place to discuss future nuclear designs that might make nuclear affordable, the unproven GenIV type stuff that might or might not work. If there’s a clear demonstration of affordable nuclear sometime in the future [China will begin replacing the furnaces in many of its coal plants with Gen IV, gas cooled, pebble bead reactors as soon as 2018 and Russia just put a breeder reactor into commercial operation last month], then we can open up the discussion about the role nuclear could play in replacing fossil fuels.

In the meantime, there are several sites where they love to discuss nuclear ideas. Feel free to take your speculations to one or more of those sites. We’re going to stick with stuff that is affordable and practical.

[Aside]

 Shahan began his article with praise of another antinuclear article.