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Comment Re:Damn you! (Score 1) 2

I didn't say it was good reading, just that it was there... That said if you spent a half hour going through that discussion you were almost certainly exposed to as much factual and topical information for that as the other person had been over the course of his entire life.

Comment Re:where is your brain? (Score 1) 313

Are you actually asserting that demand is level 24 hours a day?

It can come very close.

In California, for example, a very large part of the demand is pumping water through aquaducts. By placing reservoirs along the way and doing most of the pumping during times of low electrical demand, California electrical utilities used to be able to keep the power demand nearly constant - and can still keep it much more level than in many other places.

Also: Coal plants can provide baseload, while wind and solar together do a great job of shaving peaks: Higher wind corresponds to higher HVAC load as well as higher generation. Solar not only tracks the air conditioning requirements but also comes close to tracking the daily load peaking - and solar plus wind tracks it even better, since the lake effect makes an afternoon-through-evening hump in wind generation.

at a power output proportional to the CUBE of the windspeed.

is this relevant somehow?

Yes, very. The steeply up-bending curve means that wind generators that are able to make use of high winds - which only happen for a tiny fraction of the time - have a peak power rating far above the average power they are able to produce in normal winds. So the peak power vastly overstates their average contribution.

Comment Re:Let me know when ... (Score 4, Insightful) 313

The power can be stored,

The issue is not that the power can be stored.

The issue is that power capacity comparisons overstate the total amount of energy you get out of the renewable generation equipment over the long haul because coal generation can run near capacity all the time and renewables (excluding water power) only a small part of the time.

I'm quite supportive of renewable energy. (I'm a major participant on one of the renewable energy tech discussion boards, too.) But while it's very GOOD that renewable power has passed coal in power capacity, even with near-ideal load-levelling storage, it will take about another factor of three before it surpasses coal in providing usable energy to the loads.

Comment Let me know when ... (Score 2, Insightful) 313

... they overtake coal for amount generated per unit time.

Renewables may have higher total peak, but coal plants have level output and can run 24/7, while sun is only about a third of the day and wind varies with the weather - at a power output proportional to the CUBE of the windspeed.


Journal Journal: Drudgedot Pride In Ignorance, Part 358 2

Start here . This was in reply to my comment (that oddly enough eventually ended with a +4 score in spite of being tagged "flamebait" and "troll" multiple times) on the bizzaro article from last week on Universal Basic Income. The comment I linked to comes from a very peculiar (even by drugdedot standards) slashdot conservative with the handle prof_robinson. Fo

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