Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror
×

Comment Re:Politicians will be stupid but scientists/techn (Score 3, Informative) 356

Finally solar power is becoming cost competitive even with coal.

Capacity =/= generation. Generation is generally 20% of capacity due to solar's awful capacity factor, which is why its NOT competitive with coal (really, nothing is). I would love for this to be true, because as a tech solar seems like the elegant solution we need-- you make the panel, it magically makes energy, win win! Except thats not the reality. Things like latitude (germany is pretty far north, for example, which affects their generation), the fact that panels dont last forever (need replacement after 15-30 years), their high cost to make, and their low efficiency conspire to kill "the dream". Enough soapboaxing-- lets look at actual figures.

(Sources from wikipedia, and from thence many other sites)
A chart of energy prices by source, Germany. Note how coal is generally 1/2 to 1/3 the cost of solar.

US DOE estimates for 2019 (scroll down for chart). The fun facts--Total system costs (per mWh):
  * Coal (various types): 95 - 147
  * Natural gas (various types): 66 - 128
  * Advanced Nuclear: 96
  * Solar, Thermal: 243
  * Solar, PV: 130

Note the first column, which is where solar really gets thrashed. Your installed solar capacity may be 1000MWh, but your average output over the year will generally be 200MWh because your capacity factor sucks. Go towards the poles, it will be far worse (as Germany is discovering). Take a look here, you can see that while Germany has a boatload of solar capacity (beating out everything else), its actual generation lags behind everything except gas and hydro.

Im not cherry-picking these, either; one of those links youll note appears to be to a "green" site. Im just grabbing the first links I see, which mesh with every other piece of info I've seen on the subject. The TL;DR is that solar is crazy expensive and not really a great pick for northern countries. Maybe Im wrong and Germany will hit 100% of its generation year round eventually-- but I seriously doubt it. Solar is great as long as you dont expect it to carry the full weight of your country's energy needs; its really not made for that.

The real tragedy to me is that Germany is scaling down its nuclear, with the upshot that its still having to rely heavily on coal. If we did live in a world driven by science and rationality, we would see solar / wind / nuclear on an upswing and coal on a downswing. Thats not happening because many "green" types will worry about the nuclear boogeyman, and claim that if we work for 100 years we can possibly get solar to be cost competitive and efficient enough to actually generate a country's energy.

Comment Re:Energy (Score 1) 91

As I recall, Germany's solar infrastructure consistently delivers a fraction of what its expected output is, year after year. Might have something to do with how far north they are.

You have to remember that solar already sits around 20-40% efficiency, chopping another 60% out of that is a pretty serious hit.

Comment Re:Makes sense (Score 1) 315

I wasnt remarking on your party, but on the deflection. Theres a serious issue here with a presidential hopeful violating all manner of data protection and FOIA laws, and you want to turn this into commentary on the FBI and conservative media.

I personally dont like when people pull all sorts of red herring manuevers, but I hear its quite valuable in the PR sector which is why I recommended you make a profession out of it.

Comment Re:Maybe in a different country (Score 2) 498

And those irresponsible owners are the ones whose "rights" we see so much time and money spent to protect.

It has historically been the policy of reasonable and just governments to punish people who have committed a crime, after they have committed said crime. Now alternatives have been proposed, most famously by Mr Orwell, but these are generally regarded as a poor choice for the populace.

If the vast majority of the population has no trouble in following a loosely enforced law, and someone cries "for the children!" to attempt to impose strict policing for the entire population for the sake of stopping the remaining 0.05% of offenders, I would have a hard time signing on.

Comment CNN all over again (Score 1) 46

Just to clarify here, the story is that Slashdot posted an incorrect and hysterical headline a few days ago, that has been refuted, and now Slashdot is making another story about it.

Its amazing, even when there's no news, Slashdot can use this technique to report complete BS and then report on the expose of said BS! Endless news cycle!

Comment Re:Alternate Bank of Canada Press Release (Score 1) 223

You'd have a hard time claiming theft if a reasonable attempt to pay was made.

Not really. When you go to a store, the seller has no obligation to sell you anything. When you attempt to purchase a good, at that point you are offering an exchange with the vendor; they can lower the price, raise it, give the item away, or even refuse to sell you the item at all (all of which have happened in the real world). Until you and the seller come to terms and exchange currency for the good, you do not have legal posession of it.

Im sure there is a much more accurate legal explanation for this, so I'll let StackExchange do the talking (though I would note they misinterpret Treasury.gov's stance on debt, as they leave out some crucial parts).
http://skeptics.stackexchange....

Comment Re:Alternate Bank of Canada Press Release (Score 1) 223

While it is interesting to suppose what it would be like if that were to work, in reality it would not:

In State v. Carroll, 1997 WL 118064 (Ohio App. 4 Dist.), the Court upheld the municipal court's refusal to accept the pennies. The plaintiff argued that under 31 U.S.C.A. ' 5103, United States coins are legal tender "for all debts, public charges taxes and dues," and for that reason the city was required to accept the pennies as payment of the fine. Without pointing to any case law, the Court simply concluded that "It defies logic and common sense that this Congress intended such a wooden and broad application of the statute beyond the control of the payee regardless of the circumstances."
Source

Slashdot Top Deals

"Your mother was a hamster, and your father smelt of elderberrys!" -- Monty Python and the Holy Grail

Working...