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Sunday, July 23, 2017

Has anti-nuclear fear mongering nullified all progress made by wind and solar since 2000?

Figure 1 Emissions increase resulting from nuclear closures

"Twitter debate" is an oxymoron but once in a while I go down the rabbit hole, and when others get involved, it quickly devolves into a confused muddle not too unlike Alice in Wonderland.

It started when I responded to a tweet by Jonathan Gilligan:

At this point, I mentioned that fear, not economic competition had created the gap between the red and blue curves seen in Figure 1 above. After visiting his Twitter page, I'm thinking that maybe he's not all that enamored with nuclear:

Sunday, July 9, 2017

David Roberts--Solar saving lives while intense battles rage across the country as batteries neuter attempts by utilities to attack it!

Figure 1 NREL Study Results

David Roberts has recently published two new somewhat obtuse energy articles:
The first is a rehash of a joint 2016 Berkeley Labs and National Renewable Energy Lab study touting the benefits of solar titled The Environmental and Public Health Benefits of Achieving High Penetrations of Solar Energy in the United States [When Compared to Coal and Natural Gas, But Not Nuclear]. And keep in mind that solar in the U.S. makes up roughly 0.4 percent of total energy consumption at this point in time.

Like any study, it has its biases, and like any study, the results are largely the result of assumptions chosen. Read The 44% Nuclear, 35% Renewables, 21% Natural Gas Low Carbon Grid and Bounding the Renewables-Nuclear Debate (also see Figure 1).

When talking about water use, they assumed that concentrated solar will use dry-cooled technology (which uses an order of magnitude less water than a typical wet-cooled system). Why would the authors conclude that only solar would do that when there are no laws in place mandating it and if there were laws, why would they not apply to other power systems?

Tuesday, July 4, 2017

The 44% Nuclear, 35% Renewables, 21% Natural Gas Low Carbon Grid

Typical Rube Goldberg machine with its many attendant assumptions and potential failure nodes
Proposed coast-to-coast  HVDC super-grid with its many attendant assumptions and potential failure nodes

Would a continent-sized super HVDC grid be a Rube Goldberg machine writ large?

Back in the day, you would have been hard-pressed to find an article on the internet critical of biofuels. We should all be driving biodiesel or cellulosic ethanol powered cars by now. Politicians at the Federal level from both sides of the aisle saw this as an opportunity to kill two birds with one stone; buy votes from the farm belt, implement a permanent farm subsidy. So, in the end all we have left is the government mandated consumption of corn ethanol. Ethanol made out of corn now replaces roughly 10% of gasoline use. Not quite what everyone was hoping for. Governors and mayors also jumped on the bandwagon with similar dismal results.

Because Seattle is too small to grow its own biodiesel, the goal was to at least source it from Washington State, but for economic reasons, it ended up coming from Canada. So, in the end, there was a transfer of wealth going on from Seattle to Canada for its canola-based biodiesel, which is why all of the biodiesel stations have since disappeared. A similar situation arises with the generation of electricity.

Dozens of studies and white papers supporting biofuels were being pumped out (no pun intended) at the height of the craze. I see all of this as a potential analogy for what we're witnessing today with wind and solar.

The latest low carbon energy system research seems to have given up on storing excess wind and solar generated electricity in a form that will be used to create electricity later (minus the 20%-30% lost from storing and retrieving it) when there is demand for it.