humanspiral
@humanspiral@lemmy.ca
- Comment on AI Utopia, AI Apocalypse, and AI Reality: If we can’t build an equitable, sustainable society on our own, it’s pointless to hope that a machine that can’t think straight will do it for us. 1 day ago:
Very similar to global warming. If government AI policy is to strengthen military, empire, zionism, and oligarchy then voters need to be miserable and have bigger issues in their lives and hatred towards trans hispanic immigrant pet eaters.
Skynet is awesome, and will be programmed for such supremacy. The same techbros who say polite things about UBI/freedom dividends/Universal high income are the ones vying to take all of our money to deliver skynet. If the slave class doesn’t take political influence before skynet, then “power sharing with the slaves” through UBI is far less likely than genocide of the uppity classes.
- Comment on In 6 hours it will be illegal to say "I support Palestine Action" in the UK, with a sentence of up to 14 years in prison. 2 days ago:
Both Iran and Hamas have been geopolitical issues for a long time. And it’s worth remembering that all of this was kicked off by a large scale terrorist attack perpetrated by Hamas.
Propaganda is deeply effective because most people’s world events attention span is like a dog that sees a squirrel. History starts at the chosen squirrel event, and of course, geopolitics is viewed as “Us the good guys” vs. “those who fail to obey us”.
Your rant was praised as balanced, but is simply the official justification for colonial apartheid turned genocide our rulers, in submission to our own colonial masters, dictate upon us.
- Comment on In 6 hours it will be illegal to say "I support Palestine Action" in the UK, with a sentence of up to 14 years in prison. 2 days ago:
Does free speech or democracy exist if the oligarchs/states that buy your politicians/rulers force you to support those states? What would Idi Amin do (perhaps most self enriching open corrupt ruler, or the narrative that gets pinned on a ruler who shifts away from US empire)? Or as in history, UK first decided it was illegal to oppose Idi Amin (support his rivals) to later being illegal to support Idi Amin?
“To know who rules over you, notice who you are not allowed to criticize”
IIUC, it is only Palestine support that is illegal. You may still advocate for UK/NATO war on Israel or at least elimination of support, and elimination of politicians who support Israel. Limiting speech to support for all wars your rulers prefer is the most oppressive of democratic speech.
- Comment on Bitcoin investor moves $8 billion worth of crypto after 14 years, originally bought for less than $210,000 — 80,000 BTC transferred from Satoshi-era wallet 3 days ago:
OP doesn’t know purchase cost. Wallet deposit on that date doesn’t mean it was purchased 1 hour before.
- Comment on US debt is now $37trn – should we be worried? 3 days ago:
The $3.4T deficit increase projection, $340B/year is on top of the $1.9T projected for 2025 prior to bill. The projected deficit for FY2035 is $2.7T. This is before golden dome, and other warmongering/Israel funding. 2025 and 2035 numbers are both about 6.1% of GDP.
GOP talking points have include the fantasy of growing at 3% (instead of 1.9%) annually to pay for the $340B/year increase, but at 6.1% deficit/GDP ratio, total debt increases as long as nominal GDP doesn’t grow above 6.1%. Cutting healthcare, and population through deportations won’t cause growth.
- Comment on Solar + Battery (covering 97% of demand) is now cheaper than coal and nuclear 4 days ago:
solar panels don’t use rare earths. They use sand. Rare earths and lithium are not radioactive. Thorium is more expensive than Uranium processing and molten salt reactors have never lasted long.
- Comment on Solar + Battery (covering 97% of demand) is now cheaper than coal and nuclear 4 days ago:
absurd. Uranium mines need huge exclusion zones. In fact the biggest ones have large enough exclusion zones that more solar energy could be harvested than the energy content of the uranium underneath.
- Comment on Solar + Battery (covering 97% of demand) is now cheaper than coal and nuclear 4 days ago:
Panels are also cheaper than most fencing, and easy to DIY install.
- Comment on Solar + Battery (covering 97% of demand) is now cheaper than coal and nuclear 4 days ago:
“bad” solar areas are actually amazing for 9 months, and if you heating needs are met by other means, then winter can keep the lights on and still do cooking. The path to meeting winter heating needs is hot water and “heated dirt/sand” storage with hydronic floor heating (where more water is delivered at 30C is easier to manage than radiators at 80C) that can be stored during ample fall solar with no heat or cooling load.
- Comment on Solar + Battery (covering 97% of demand) is now cheaper than coal and nuclear 4 days ago:
using old/existing FFs 3% of the time instead of 100% is a 97% emission reduction.
- Comment on Solar + Battery (covering 97% of demand) is now cheaper than coal and nuclear 4 days ago:
2gw, but yes, before any operational/maintenance costs that is $17.5/watt. Solar is under $1/watt, and sunny AF.
- Comment on Solar + Battery (covering 97% of demand) is now cheaper than coal and nuclear 4 days ago:
solar today is warranteed for 30 years. No reason to replace before 60 years compared to adding more beside it.
- Comment on Solar + Battery (covering 97% of demand) is now cheaper than coal and nuclear 4 days ago:
This is US centric, and panels are 1/3 cost in China, batteries 1/2, and labour/land 1/2 ish too.
just 17 kWh of battery storage is enough to turn 5 kW of solar panels into a steady 1 kW of 24-hour clean power
This is a bad model, though they are saying 3.4 hours of storage, and LasVegas as their best site. AC use is typically day only, but heat waves do make it a 24 hour demand issue on the longest solar production days. For LV, 5kw of solar will produce 32kwh/day, ranging in seasons from 29-35.5kwh. Already a problem for their 1kw “transmission setup” in that production is higher. The 2nd problem is that there is/can be higher demand during the day than night, due to AC.
The biggest problem of all is a battery in LV, even with 2kw transmission per 5kw solar, would charge in winter up to 19kwh of batteries. Summer 21.5kwh. The 2 big variables are batteries vs transmission size, and demand shifting opportunities, where necessarily fully charging batteries every day is a cost optimization, though fully delivering power on highest demand days is a revenue/price optimization.
cost assumptions are $563/kw solar-electrical hardware, and $181/kwh batteries. They may not include land and deployment costs. They use outdated pessimistic 20 year lifetimes. They have terrible comparisons to coal and NG as well.
Both coal and NG plants cost the same for basic peaker plant. A double efficient NG plant costs double, but loses flexibility. They have variable fuel costs and relatively fixed operation costs. Before covid, all 3 options cost $1/watt to build, giving a huge advantage to solar for not having fuel/operations costs.
A much easier way to model cost of solar+battery system is independently. Solar at $563/kw in LV to make 10% “yield” per year (covering full financing and a healthy profit). needs $56.30 revenue/year = 2.4c/kwh = $24/mwh. Even $1/w US system requires 4.27c/kwh The same base profit over operational costs as FF plants. Batteries last 30 years too, and 10% yield means a discharge/charge profit requirement of 5c/kwh at night, with possible double cycling from clouds/frequency balancing, or lunch cooking demand spike, where any profit is bonus profit.
So as long as duck curve/early evening/morning breakfast electricity markets are 7.4c/kwh TOU "wholesale"rates or higher, and daytime rates above 2.4c/kwh, solar + batteries (that fully charge every day) then that far beats any new dead ender energy plants. Also, for a 1gw transmission line, compared to OP model, you only need 1.7gw solar instead of 5gw.
In short term there are existing FF plants that can serve as backup, and where it is extremely undesirable to have any human activity in their surrounding areas, host solar to piggy back on their transmission capacity. That these plants were paid 20-40c/kwh to provide 10%-20% of power needs, with a combination of per kwh pricing, and fixed “stay ready for backup” payments, would permit these plants to stay open/operational. In short/medium term, EVs are a great resource to replace both utility batteries, and backup FF plants with more solar. Being paid 3-10c/kwh profit (depending on demand primarily from nightime AC/heating)
In long term, the path to solar+battery/EV power every day is much more solar with H2 electrolysis. $2/kg costs are already achievable today with 2c/kwh “surplus solar” input. It is an even more rapidly advancing tech/cost efficiency field. $2/kg is equivalent for a FCEV to $1/gallon gasoline vehicle range. It is 6c/kwh CHP (free domestic hot water energy), and 10c/kwh electric only energy, in addition to many chemical applications such as local fertilizer production. Electrolysis of NG is a more efficient (than water electrolysis) green H2 process that produces carbon black as byproduct. A solid precursor to graphene and battery electrodes.
H2 works today for places outside LV, where solar is much more variable. In Canada where long summer days may not need AC, high saturation solar can drop below 2c/kwh for 9 months, but be worth 15c/kwh for 80-90 days. A balance between existing energy systems and new solar works everywhere in the world. H2 export/import infrastructure also cost efficiently displaces much FF energy.
As long as daytime wholesale electricity rates in LV are above 2.4c/kwh, they need more solar. A similar number can be calculated elsewhere. Nuclear and more expensive combined NG energy cannot compete because daytime solar will cut into the hours they can sell energy.
- Comment on unfortunate news 6 days ago:
Thank you to all who refrain from posting twerking videos on shitpost. Sadly, I can imagine a thematic concept for it.
- Comment on YSK that 158 families made up 50% of all US Presidential Campaign Spending 1 week ago:
Gotten worse since 2015.
- Comment on Careful Design Lets 3D Print Emulate Kumiko | Hackaday 1 week ago:
5kg for 1.125^2^ square meters. About 50mm high/thick. $105 filament cost. Could be much less filament/print time with “speed holes” in depth. He also uses very dense “hexagon fill patterns”. He put in an extra step to cover seams so it would not look lego-ey. Many alternate section joining techniques including raised front and back strips, and center patterns that lock sections without locking to each other.
kumikowoodworking.com/design/ has this pattern: kumikowoodworking.com/products/tn-114/
which is a strip design, and center sections could use a “center joint” with center patterns recessed from “strucutral stips”
There is a guitar made from wood process that requires a lot of woodworking gear and much more assembling/fine tuning time, so this would be easier.
- Comment on New Stainless Steel Filament Simplifies Metal 3D Printing on Desktop FDMs 1 week ago:
Aparently you have to ask for the price of the fillament. Rule of thumb for not being able to afford it.
- Comment on One Of Hong Kong's Last Opposition Parties Says It Will Disband 1 week ago:
They were also a CIA operation through support of media mogul (Jimmy Lai, Apple Daily) there. When democracy is simply a tool that allows CIA fascist totalitarianism, and foment social/economic terrorism and divisiveness, democracy is broken, and nations can choose far less corrupt governance until US empire collapses.
- Comment on Last year China generated almost 3 times as much solar power as the EU did, and it's close to overtaking all OECD countries put together (whose combined population is 1.38 billion people) 1 week ago:
V2L and V2H are desirable features worth paying for. Grid sharing is not rocket appliances. In other thread, I showed how a 2nd EV that is barely used can pay for itself, but some static batteries are cheaper. 10kwh can power 2-5 homes overnight. Apartment units don’t individually pay for exterior flood lighting. Mid to higher end cars have 50-100kwh battery packs. As an overall society, 80%+ of cars are parked somewhere at any time. The point of powering one house, applies to sharing for 1m houses.
- Comment on Last year China generated almost 3 times as much solar power as the EU did, and it's close to overtaking all OECD countries put together (whose combined population is 1.38 billion people) 1 week ago:
You need H2 only after solar + EVs provides more than 24 hours of needed energy in an area. Although H2 does save on transmission costs for medium to long distance. One of the remarkable aspects of BYD Dolphin, now under $9000 for 32kwh battery is that the battery value alone is $260/kwh capacity, and if you never drove it, but sold electricity 2.6c/kwh higher at night than you pay at day, then you pay for the car in its entirety. Just batteries can be sold under $100/kwh in China, and you could make 200% ROI from 3c/kwh price differential. EVs and batteries can be paid by private sector instead of utility investment markup model.
H2 technologies are advancing, including storage and pipes. Electrical transmission is more than 10x more expensive than transmitting gas/H2, and saves money on that end relative to efficiency loss. Surplus solar with input cost at 2c/kwh or less achieves under $2/kg H2 target which is equivalent driving distance to $1/gallon gasoline, and 10c/kwh electric only value delivered energy, and 6c/kwh combined heat and electricity value.
- Comment on Last year China generated almost 3 times as much solar power as the EU did, and it's close to overtaking all OECD countries put together (whose combined population is 1.38 billion people) 1 week ago:
OP sepcifically mentioned EVs. This sector is deflationary even in US, where better value/performance cars cost less every year. More dramatic deflation in less corrupt countries. Australia home solar costs under 1/3rd of US due to different politico-social corruption levels.
EVs and home solar are a great match that permits going offgrid at substantially lower cost if an EV is parked at home during day. That same dynamic allows a society/community to power itself through solar+batteries, and EVs parked at work. It’s not a question of look at our corrupt obstructionist oligarchical monopoly state of societies for examples of lack of economic success as proof that it will forever be impossible.
- Comment on Last year China generated almost 3 times as much solar power as the EU did, and it's close to overtaking all OECD countries put together (whose combined population is 1.38 billion people) 1 week ago:
In a market or effincient economy, where peak occurs mid hot summer day, 100% solar dominated renewables makes sense. In Spring and fall, EVs can absorb daily oversupply and profit from trading back at night. Winter is when solar can fail to meet heating and electricity needs, and so either backup energy sources or having much more than 100% peak demand in order to make green H2 that can be exported to where it gets cold is needed.
0 new nuclear is best amount of nuclear for any economy.
- Comment on Last year China generated almost 3 times as much solar power as the EU did, and it's close to overtaking all OECD countries put together (whose combined population is 1.38 billion people) 1 week ago:
China approved 66.7GW of new coal-fired capacity, started construction on 94.5GW of coal power projects
New power plants don’t mean using those power plants. Resilience/backup power. Use of coal for electricity has declined despite new coal plants.
- Comment on Tesla's European car sales nosedive for fifth month as customers switch to Chinese EVs 1 week ago:
Data published Wednesday by ACEA found that Tesla’s car sales in the European Union, Britain and the European Free Trade Association fell to 13,863 units in May, down 27.9% year on year.
Tesla’s European market share also dropped to 1.2% from 1.8% in May 2024.
European/other than China EV makers also did well, that this and other headlines this year, intentionally obfuscate. The combination of both above numbers means overall EV growth was about 25%. 93% is non US/China.
- Comment on Operation Narnia: Iran’s nuclear scientists reportedly killed simultaneously using special weapon 2 weeks ago:
Only because genocidal zionazi supremacists control the us, and by extension g7+nato, Iran should not pursue nuclear energy, because Israel would always accuse them of pursuing more. There is no economic value for nuclear energy. Solar + batteries much more effective.
Still, negotiations to that end are far more human. I wouldn’t want you to have nuclear weapons, but killing you should have a better reason Than my supremacy.
- Comment on no way right 2 weeks ago:
FYI, Israelis aren’t allowed to leave Israel now, because playing the victim card requires using them as human shields. 9/11 was greatest US empire boost over Americans in history, and DNC firmly backs war and empire enslavement of Americans.
- Comment on U.S. residential solar on the brink of collapse 2 weeks ago:
This generally means a small solar system. Cost per watt is higher than larger systems.
- Comment on U.S. residential solar on the brink of collapse 2 weeks ago:
The United States may find a path forward by pursuing market conditions like Australia, where over 40% of homes in some regions have rooftop solar. Soft costs are far lower in the nation, and average residential solar installation cost was $0.89 per W, more than $2.00 per W cheaper than both Canada and the United States.
That path requires oligarchist monopoly utilities to have less influence on oligarchist political parties. Biden’s approach of creating a new green energy manufacturing oligarchy protection doesn’t help with low prices that could be achieved if main utility monopoly obstruction to home solar were removed. FF Oligarchy assists utility monopolies in their lobbying for centralized power production. It is not within US political corruption overton window to help citizens escape extortion.
- Submitted 2 weeks ago to conservative@lemmy.world | 0 comments
- Comment on Finland warms up the world’s largest sand battery, and the economics look appealing 2 weeks ago:
H2 makes the best long term electrical storage, because not only is it more efficient than other cheap alternatives, it can be even more efficient with heat use, and it is economically transportable/exportable and so is not capped by utilization/capacity constraints.
heat storage is extremely useful for complementing winter solar in low winter sun places. Including at small scale. Hydronic floor heating is most efficient use of heat. Heat pumps can very efficiently gain 30C of temperature gain. Sand and construction waste box with water pipes, and heat resistors, flowing through it, can store heat well above 100C that water doesn’t ineffienctly. 2000 liters of just water is sufficient in most locations with a fireplace or EV backup, but sand/dirt/gypsum of 500L to 1000L significantly boosts resilence and heat capacity.