keanzu

35 ms·

331.
by keanzu 7y ago
Solar did not just rise mysteriously - it was driven by government policy, first by huge feed in tariffs (US$270/MWh) and later with massive rebates. "West Australians who applied for rooftop solar panels from the 1st of July 2010
332.
by keanzu 7y ago
If you invest in a aluminium smelter you will want to run it 24/7, not just when there's cheap power. Also Australia enjoys the most expensive power in the world because of grid costs.
333.
by keanzu 7y ago
Fully refundable $100 deposit.
334.
by keanzu 7y ago
Populations might move uphill if they are unfamiliar with "dike" technology. About one third of the Netherlands lies below sea level, with the lowest point being 22 feet (6.7 meters) below sea level. Perhaps other nations might be
335.
by keanzu 7y ago
Isaac Newton is considered by some to be the greatest mathematician of all time and is regarded as the "Father of Calculus". "Taking mathematics from the beginning of the world to the time when Newton lived, what he has done
336.
by keanzu 7y ago
Had to look this up: "Be conservative in what you do, be liberal in what you accept from others. The principle is also known as Postel's law, after Jon Postel, who wrote in an early specification of TCP" https://en
337.
by keanzu 7y ago
If solar covered one percent of the UK it would meet the country’s entire power demand. That's a guarantee of making a huge part of the country uninhabitable if the UK went all solar. https://www.solarpowerportal.co.uk/
338.
by keanzu 7y ago
Noor II CSP is a 600GWh solar plant which is 2.6 square miles or ~1700 football fields. That's space permanently lost if the powerplant is run forever. A nuclear waste dump is tiny in comparison. Land use of solar is gigantic.
339.
by keanzu 7y ago
You are reading words that aren't there. The top level comment this thread started with is: >You couldn't be more Dam wrong. I am talking about dams, not pumped storage.
340.
by keanzu 7y ago
Ignoring clouds, the daily average insolation for the Earth is approximately 6 kWh/m2. [1] So you get about 0.25 KWe averaged daily per m2. Solar has serious land use issues. It is estimated that 1% of the UK would need to be given ove
341.
by keanzu 7y ago
Lithium deposits? Most of the lithium found today is extracted from brine reservoirs located in regions of southwestern South America and China.
342.
by keanzu 7y ago
> And yet, China is dominated by coal, and not building much much new nuclear capacity, really. Reportedly they haven't broken ground on a new plant since 2016.
343.
by keanzu 7y ago
The market is easily distorted by government. Want nuclear to win? Interest free loans. Want wind/solar to win? Subsidies. Put a thumb on the scale and make it say whatever you want.
344.
by keanzu 7y ago
> What does the Itaipu Dam's installed power have to do with stored energy? Nothing. Was there something to suggest otherwise? I listed two weak points for hydro: Terrible energy density, massive land use. My first reference support
345.
by keanzu 7y ago
Mountains of red tape don't exist in the communist dictatorship of China yet they haven't broken ground on a new plant since 2016 [1]. There are fundamental economic problems with nuclear that prevent it from being the power solut
346.
by keanzu 7y ago
> Doesn't scale. Not enough sites. Terrible energy density, massive land use. To store the energy contained in 1 gallon of gasoline requires over 55,000 gallons to be pumped up 726 feet (CCST 2012). [1] Itaipu Dam has 14,000 MW inst
347.
by keanzu 7y ago
Land use of solar prevents it ever getting really cheap. According to the UK solar power portal [1]: "If solar covered one percent of the UK it would meet the country’s entire power demand". > just build twice as much solar cap
348.
by keanzu 7y ago
> A battery back up of solar and wind deployments on the scale of a nation's economy, would need to provide enough storage for WEEKS of energy - there is NO battery technology today or upcoming that can do that. With a sufficiently
349.
by keanzu 7y ago
I think you've misunderstood the change in growth rate. It has dropped from 1.19% to 1.08% growth in the last five years or down 0.11%. If this trend held in the next five years it would drop to 0.97% growth by 2024 and in ~50 years it
350.
by keanzu 7y ago
The source I provided shows that the growth rate has been consistently dropping. In 2015,2016,2017,2018 it was 1.19,1.14,1.12,1.10 Not sure you can extrapolate out 100 (or 66) years when there's been a 0.11% (1.19 -> 1.08) change in
351.
by keanzu 7y ago
> Today, we don't have a way to fully move off of fossil fuels. If we are talking just electrical grid power then Sweden is 95% there on a mix of nuclear and hydro. Edit: I acknowledge that hydro only works if the geography gods hav
352.
by keanzu 7y ago
A high rate? Population in the world is currently (2019-2020) growing at a rate of around 1.08% per year. https://www.worldometers.info/world-population/
353.
by keanzu 7y ago
There's already a lack of fresh water in various parts of the world but the problem is particularly concentrated in the Middle East where 70% of the world's desalination plants are located. For example Kuwait meets more than 90% o
354.
by keanzu 7y ago
Even at projected SpaceX lift prices of $1000/lb access to space is still prohibitively expensive. The Earth is big and a big mirror would be needed: millions of tonnes size range. Not only that but it would have to be delivered to the
355.
by keanzu 7y ago
The Chinese government effectively has infinite resources and unlimited time. They will proceed with slow divide and conquer, jailing people one by one until either the protestors give up or turn violent. If the protestors can be provoked t
356.
by keanzu 7y ago
Sounds like compelled speech https://en.wikipedia.org/wiki/Compelled_speech
357.
by keanzu 7y ago
What on earth is going on in DC?
358.
by keanzu 7y ago
Paywall. Facebook redirect allows you to read the article. http://facebook.com/l.php?u=https://www.wsj.com/articles/the...
359.
by keanzu 7y ago
This is terrible advice. When you quit you no longer have a stake in the game. Say NOTHING beyond platitudes.
360.
by keanzu 7y ago
...and with 158 comments.

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