:) To be honest I think that more than 2 wheel recumbents suck. E.g. trikes are not good for healthy people who can maintain balance; trikes are too clumsy. But something like a two-wheel "high racer" with short wheel base are fine for normal city use. Occasional curbs up to about 6 inches are not a problem. One can just ride on a small curb slowly in approximately perpendicular direction without an issue. I use my recumbent for any errands which are over paved roads, do not need a car trunk and are not longer than 34 miles.

Recumbents are a complete crap outside of paved roads. You cannot do a bunny hop on them which more or less prohibits their use for "cross country", "trail", "enduro", ... Bumps are much more uncomfortable when your whole back is in contact with the bicycle (in contrast to just the butt). One cannot stand on pedals to overcome a bumpy region more comfortably.

For Lithium Ion it is about 0.3 watts per gram. In other words, motor weight is a rounding error for battery weight. Well high power density motors are also high speed. They will need transmission with a big down-step ratio (somewhere in the range of 100). That will not be efficient (somewhere in the range of 50%). Other option is less energy dense, higher torque, lower RPM motor. Common electric bicycles use this approach to keep the whole electric support efficient since the battery capacity (energy density) is the biggest problem. Even bigger than battery power density.

I like recumbents. I have one. I use it for training and small errands. It is a good bicycle for paved roads.

You can get small electrical motors in the power density range of about 8 watts per gram very easily. Just look for RC model motors. Long term power output of a competitive cyclist in a race is around 400-480W. You can double rider's power with only 60 gram motor. The battery is the harder part. The peak power output of a competitive cyclist is a bout 2 kW (time limited to a few seconds only).

If it is an UCI race than the racing bicycles must be obtainable by the masses. They can be custom fitted but they cannot be custom made. The goal of UCI races is to market bicycles to people. So there must be a way for people to buy them.

It would transom cycling into a competition of small motorcycles. The limit should be: It must be only human powered and any stored energy in the bicycle should be zero joules at the start of the competition.

If that would be the goal then there would not be any technological limits except that it must be human powered and some basic safety limits (like it must have working brakes, ...).
No, bicycle races are not about technology. It is about marketing UCI approved bicycles to the masses

It does work that way. Even if the AC would have infinite efficiency (instead of typical values of 2-3), you are increasing temperature out-of-the-house by reducing temperature in-house. But I agree in general that most of the time it will not matter and Agnes is wrong in practice. The reason being that the heat capacity of all the in-house areas is too small compared to heat capacity of all the outside areas. Therefore outside temperature increase will be negligible almost always. Maybe something will be measurable in narrow streets where air flow is low and which are full of AC radiators from the apartments around.

The second chart I posted is about prices for companies - it is not that much different.

Something is very wrong with the EU electricity market when wholesale prices dropped by 64% based on ACER's "Market Monitoring Report" but end prices for companies dropped only by 14% and they stayed about the same for homeowners based on Eurostat.

Promoting market efficiency is rather strange when there is such a huge discrepancy between ACER's and Eurostat's claim. Something is very wrong with this allegedly "efficient" market or one of those two organizations is cheating. And if there is some cheating then I would bet it is ACER and not Eurostat.

My suspicion is that the "Market Monitoring Report" is cherry picking data to promote ACER's agenda and hide the real situation. If the common electricity would be abandoned then the burecrats in ACER are out of work :)

Spot wholesale prices are varying a lot depending on the region, time of day, weekday and whether it is spring/summer (when solar works great during day) or autumn/winter. Typically prices are zero on spring/summer weekends during daylight. Otherwise they oscillate mostly around 0.1 with rare peaks to around 0.5 Eur/kWh during spring/summer. autumn/winter is slightly worse.
For example see: https://app.electricitymaps.co...

Average EU price in euros is here: https://ec.europa.eu/eurostat/...
Multiply by 1.18 to get US dollar price. Notice that is the average EU price. There may be big differences between different regions.

Did you look at the charts I posted? They are published by Eurostat which is the authoritative source for EU. The charts clearly show your claim is not true for households and it might be true for companies if your "since 2021" actually means excluding 2021 (i.e. since 2022). If there are any price reductions then they are not propagated down to households and mostly not propagated down to companies.

You are twisting truth like you work for an electricity exchange house in Germany :)

Maybe the common EU electricity market will work well in the future but so far its track record is very poor. Currently, the electricity price is tightly related to fossil fuel price since the last fraction of generated electricity is from fossil fuels.

There were no electricity cost reductions in Europe in the past 16 years for households. There was a huge bump in price after COVID and when Russia invaded Ukraine. After that it somewhat stabilized but it is still up by about 64% in this period: https://ec.europa.eu/eurostat/...

There was a small price drop for electricity for companies in 2023. But it is not dropping any more either now. And overall electricity price for companies went up by about 90% in the last 16 years: https://ec.europa.eu/eurostat/...

I call bullshit on your claim that electricity prices in EU are going down.

From the noise point of view, it looks like typical required distance is about 2 km. That's what LLM's claim :)

0.5 Hz is more like now a wind is blowing a bit and now it is not :)
Different studies probably focus on different frequencies. This was my source: https://www.nature.com/article...
I know people complain about the noise and I would not like it either. But I would not mind them if they were far enough so that the noise is below 10 dB. Which means at least 500 m away for 20-200 Hz range. More may be needed for lower frequencies as you indicated.