netz_pirat
netz_pirat t1_jeg57p7 wrote
Reply to comment by Eokokok in Heat Pumps could supply 20% of building heating by 2030. Supercritical CO2 heat pump sales in Japan have now reached a total of 8.5 million units. by DisasterousGiraffe
Eh, obviously not able to talk about other houses, but we went from 26000ish kwh worth of heating oil to 18000ish kwh of heat from the heat pump that is generated by less than 5000 kwh of electric energy. At least a third of that is supplied by our solar roof.
I don't think there is any thermo work that would reduce energy consumption of our house by like 90%.
netz_pirat t1_jedhs1q wrote
Reply to comment by Blakut in The European Union to nearly double the share of renewables in the 27-nation bloc's energy consumption by 2030 amid efforts to become carbon neutral and ditch Russian fossil fuels. by chrisdh79
That... Doesn't say anything about renewables?
So no, neither gas nor coal nor nuclear is renewable.
netz_pirat t1_jebhnn3 wrote
Reply to comment by Blakut in The European Union to nearly double the share of renewables in the 27-nation bloc's energy consumption by 2030 amid efforts to become carbon neutral and ditch Russian fossil fuels. by chrisdh79
44% renewable electric energy in 2022
netz_pirat t1_jebhfph wrote
Reply to comment by jargo3 in The European Union to nearly double the share of renewables in the 27-nation bloc's energy consumption by 2030 amid efforts to become carbon neutral and ditch Russian fossil fuels. by chrisdh79
I read it as electric energy, but you might be right, they might mean total energy. If that's the goal, Germany missed, obviously, but it would make a way better goal for 2030.
netz_pirat t1_jeb3wk2 wrote
Reply to comment by tehrmuk in The European Union to nearly double the share of renewables in the 27-nation bloc's energy consumption by 2030 amid efforts to become carbon neutral and ditch Russian fossil fuels. by chrisdh79
Yes, basically that. If you cover most of your energy needs with nuclear, switching to renewables isn't really a win in terms of co2.
If it's the best strategy going forward remains to be seen, replacing the aging fleet of reactors at an economical reasonable prices will be a monumental task, and the situation with the lack of cooling water in summer won't get easier either.
netz_pirat t1_je9zcb1 wrote
Reply to comment by cmdr_awesome in The European Union to nearly double the share of renewables in the 27-nation bloc's energy consumption by 2030 amid efforts to become carbon neutral and ditch Russian fossil fuels. by chrisdh79
Germany has already hit the target as well as far as I know.
But it's supposed to be an average over the whole eu, so some countries will end up way above target and others well below. Some with better reasons (france comes to mind) others with worse reasons.
netz_pirat t1_j9twa4u wrote
Reply to comment by OutlandishnessOk2452 in EU seeks input on making tech companies pay for ISPs’ network upgrades by OutlandishnessOk2452
Eh? Don't know where you are but here the infrastructure is getting upgrades left and right, half the town here is getting glass fiber and the other half already has gigabit per tv cable.
netz_pirat t1_j9fb0gc wrote
Reply to comment by ACorania in Heat Pumps Sell Like Hotcakes on America's Oil-Rich Frontier by dolphins3
It's a bit of renter's vs landlord market as well.
If the available renter has a budget of 1500$ for rent and utilities, you bet the landlord has an interest in efficient appliances so he can charge a higher percentage of those 1500$.
Now, if the renters have to be happy to find a place at all, it doesn't matter that much unfortunately...
netz_pirat t1_j8mtfm2 wrote
Reply to comment by wwarnout in Scientists Successfully Split Seawater To Produce Green Hydrogen by __The__Anomaly__
While you are correct, the amount of water needed for green hydrogen is probably several orders of magnitude below the amount of water that we need to convert to drinking water - so we'll also see way less brine...
netz_pirat t1_j8jmk08 wrote
Reply to comment by Thialase in EU Parliament votes to effectively ban new combustion engine cars by 2035 by saltyswedishmeatball
Iirc most manufacturers are phasing out ice cars by 2030 anyway
netz_pirat t1_j83p5e1 wrote
Reply to comment by SeeminglyBlue in No coal comeback: Europe’s renewable energy transition is in hyperdrive by Straight_Ad2258
Unfortunately, nuclear does not fulfill this role from an economic perspective.
Cost of nuclear energy is mostly build cost and maintenance, fuel costs are pretty low. So if you have one, you want to keep it at nominal power for as much time as possible, if you just use it as backup, each kwh is insanely expensive.
For coal and gas, it's the other way round. Building them is cheap in comparison, so is maintenance. They only cost money if they run... So they are pretty good backup plants.
Also... You mean the brand new plant of the EPR Type in Flamanville? Construction was supposed to take 5 years, were now at 15 and counting and cost has gone up from 3.3 to 19(!) billion €
netz_pirat t1_j83p18w wrote
Reply to comment by SeeminglyBlue in No coal comeback: Europe’s renewable energy transition is in hyperdrive by Straight_Ad2258
Unfortunately, nuclear does not fulfill this role from an economic perspective.
Cost of nuclear energy is mostly build cost and maintenance, fuel costs are pretty low. So if you have one, you want to keep it at nominal power for as much time as possible, if you just use it as backup, each kwh is insanely expensive.
For coal and gas, it's the other way round. Building them is cheap in comparison, so is maintenance. They only cost money if they run... So they are pretty good backup plants.
Also... You mean the brand new plant of the EPR Type in Flamanville? Construction was supposed to take 5 years, were now at 15 and counting and cost has gone up from 3.3 to 19(!) billion €
netz_pirat t1_j7ywddc wrote
Reply to comment by Vericeon in Renewables are on track to satiate the world's appetite for electricity by ForHidingSquirrels
Three years is pretty short though. For Germany, I expect the energy consumption to rise due to heat pumps replacing gas /oil heating and electric cars replacing ice engines.
I don't think we can increase renewable energy generation fast enough to cover those as well as the existing generation in the next few years, but it's still a overall emissions reduction.
netz_pirat t1_j6vyrqa wrote
Reply to comment by SeeminglyBlue in No coal comeback: Europe’s renewable energy transition is in hyperdrive by Straight_Ad2258
You may want to check the great uptime of nuclear power plants in France.
Or how cheap their new reactor is.
netz_pirat t1_j6spzgh wrote
Reply to comment by thatmurdergoose4u2 in No coal comeback: Europe’s renewable energy transition is in hyperdrive by Straight_Ad2258
No, in favor of renewables. No new coal plant is being built.
Stop the bullshit.
netz_pirat t1_j6sm6uf wrote
Reply to comment by ZoulouGang in No coal comeback: Europe’s renewable energy transition is in hyperdrive by Straight_Ad2258
Why would 100% renewable not be possible?
Target is exactly that. 100% renewable in 2035.
netz_pirat t1_j6r7bew wrote
Reply to comment by thatmurdergoose4u2 in No coal comeback: Europe’s renewable energy transition is in hyperdrive by Straight_Ad2258
Let me guess, you have no clue about the situation in Germany?
The goal for wind energy installation this year is almost double the target from last year (and it was met).
For solar, wait times are beyond one year.
Germany was at 44.6% renewable electric energy last year about double of, say, usa.
(and if you insist : coal is on a downward trend in Germany since 2012)
netz_pirat t1_j5ttvm1 wrote
Reply to comment by sc00bs000 in Fossil fuels fall to record low in power grid as renewables hit new high by peenpeenpeen
Because you pay for the renewables and the fossil plants that sit idle.
netz_pirat t1_j5sucaa wrote
Reply to comment by Bewaretheicespiders in Solar powered hydrogen facility being built in California by ForHidingSquirrels
If you want to make methane, you'll need hydrogen as a precursor anyway.
netz_pirat t1_j42kfzb wrote
Reply to comment by Heap_Good_Firewater in Solar energy record: Mongolian CSP generated round the clock – 12 days, 24 hours a day by Cosmic_Ray_Bit_Flip
Demographic decline? Population has been growing.
And no, we don't count coal energy as renewable.
How can one look at YOY 50% renewable electric energy and conclude that this must mean we burn more coal? Wind and solar produce more electricity every year than nuclear ever did
netz_pirat t1_j41a6a5 wrote
Reply to comment by Heap_Good_Firewater in Solar energy record: Mongolian CSP generated round the clock – 12 days, 24 hours a day by Cosmic_Ray_Bit_Flip
The fuck you are talking about? https://en.m.wikipedia.org/wiki/Energy_in_Germany#/media/File%3AEnergy_mix_in_Germany.svg
Coal use has gone down a lot over the years, if anything we burned more coal because we needed to export more energy to France as they had lots of reactor maintenance
netz_pirat t1_j3y1zkk wrote
Reply to comment by Heap_Good_Firewater in Solar energy record: Mongolian CSP generated round the clock – 12 days, 24 hours a day by Cosmic_Ray_Bit_Flip
German here... No we're not? We're installing as many panels as we can.
Rooftop solar comes in at 6ct/kwh here, which is substantially cheaper than coal, gas or nuclear power.
For what it's worth, it's been cheaper to have solar panels create enery for green hydrogen than to buy natural gas for most of the year.
netz_pirat t1_j2d2uym wrote
Reply to comment by grundar in Green Hydrogen - Not The Fuel Of The Future by Realistic-Plant3957
Just as an addon: gas is way way way more expensive in Europe, Spot market prices are about triple of what you listed for the us, even before the war.
So gree hydrogen has already broken even here, and there are several agreements in place to generate green hydrogen in spain, tunesia,... And send it to northern Europe per pipeline.
netz_pirat t1_j0cmmf4 wrote
Reply to comment by erics75218 in Nuclear fusion breakthrough: A physicist answers three vital questions by FarmhouseFan
ITER is aiming for a q>10, first plasma expected EO 2025
netz_pirat t1_jegdq60 wrote
Reply to comment by Eokokok in Heat Pumps could supply 20% of building heating by 2030. Supercritical CO2 heat pump sales in Japan have now reached a total of 8.5 million units. by DisasterousGiraffe
You have to realize that people have limited money. Of course the best way to go would have been to buy the house, insulate the roof, the walls, change all windows and the heating at the same time.
But we can't afford that. So we start with the point that saves us the most money, is mandated by the government and subsidized by 50%.
At this point, we have costs for heating of about 1500€ a year. Upgraded roof insulation could bring that down to 1000, but would cost approx. 30k so it would pay for itself in 60 years at current prices, at that time I am 97. Walls have a similar ROI, Windows are worse.
Well insulate the roof when we redo the tiles, we'll insulate the walls when we renew the paint,... And when we are done with that, we probably approach end of life of the heat pump anyway.
Oh, and by the way, energy efficiency class C(after renos) or D (before the renos) is nowhere near as bad as you claim it is.