mduerksen
Joined 16 years ago
Joined 16 years ago
Transmitting electricity over larger distances remains very expensive, which is why the idea of using the African sun for Europe (e.g. Desertec[1]) has stalled [2].
"So yes, Germany has a lot of gas-fired plants, and a lot of coal-fired plants, but they are actually used very little - only when demand (including from France) is very high and renewables supply is very low - which does happen, but not that often anymore."
This will continue to happen for the foreseeable future during the winter months. Solar is almost neglible, and wind obviously has slumps.
To fix this problem, the article brings up the recurring theme of saviour technologies that simply are not there yet: "flexible generation, whether hydro, new forms of storage"
Total consumption for 2021 in Germany: ~500TWhs [1]. That means ~10TWhs per week. At the moment our storage capacity is in the small GWhs ballpark [2]. We would have to increase this thousandfold. I haven't seen this gap adressed with actual projects yet.
[1] https://de.statista.com/statistik/daten/studie/164149/umfrag...
[2] https://www.erneuerbareenergien.de/transformation/speicher/w...
I can sharpen my argument even further:
Existing nuclear reactors - keep them going. They are here today.
Solar - leverage its decentralized, bottom up expansion by the people that can use their own roofs, reduce beaurocratic hurdles. Its expansion does not have to wait 8 years. The products are here today.
Power 2 Gas - celebrate existing products on the market. They are here today.
All these things are here today and part of a solution which contains many parts. I welcome each and every betterment, because we will need it.
You on the other hand are dismissing key tools and instead focus on one thing that is not here today and will maybe be ready in 8+ years.
Still, it definitely cannot generate enough to bring you through the german winter. Some example numbers I have read: A 10kWp solar system that generates up to 1,400 kWh in a summer month will only provide about 200 kWh in December.
So the solution is simple. Nuclear has its place. Power2Gas too. Build and invest in both. And in the meantime, use what we have without ideolgical eye patches.
As always, There is No Silver Bullet™.
Nuclear is not the perfect solution. It cannot be powered on and off on short notice, which would be useful for complementation of solar and wind that have high power output, but also sudden slumps. Ironically, the ideal companion for renewables would be gas...
Lithium batteries could compensate short outages, but don't have enough (feasable) capacity for long seasonal shortages.
Enter Power to Gas. Hydrogen can be a good tool in that area.
A commerically available hydrogen storage system (that is in high demand even despite its price point) will definitely accelerate innovation very effectively. I think this tool will be available quite soon for mere mortals.
This is a pioneering product for early adopters - expect prices to go down significantly with economics of scale. And further research in this area is far from exausted.
Long-term energy storage with hydrogen, with 1-5x 300 kWh. Which allows for full electric independence (not including heating though). Price: 85,000-125,000 €, minus government subsidies.
Suggesting that gray areas exist would absolutely not imply that everything is gray.
Furthermore, my critique had several angles, each alluding to the possibility of a different interpretation.
How is my post binary in any way?
Do you live up to that standard, or would someone be able to find some damning evidence of some dark side of you?
Is it possible that people are messy, not always consistent in their behaviour, that they have bad days? That they haven't thought everything through, that they get caught in the moment and regret it later?
Is there any grey area to you?
Still, I would argue this:
Lets say your 19 year old daughter wants to introduce her boyfriend of same age into your family.
How would you rate her (and his!) seriousness if
a) they lived in his apartment or
b) they are organizing their wedding.
I would wager b) would be "well-established" much quicker, especially in the wider circles, and thus have more "social resources" sooner, thus giving their potential offspring better chances. Of course, with kids out of the picture, it wouldn't make much difference. But that is exactly my point: Marriage serves having children.
- In-laws - you become a member of a new family, new levels of mutual privileges and responsibilities
- Public wedding - Proclamation to both social circles that the new family project now has officially started
- Family name - new Identity
- ...
I would argue exactly the other way around: A lasting marriage is not itself the goal (though certainly nice to grow old together), but serves the purpose of raising offspring - that's what counts for every species that has survived.
[1] https://de.wikipedia.org/wiki/Netz-_und_Anlagenschutz