Tesla Semi Round Trip Efficiency is 95% on Mountain Passes (Napkin Physics)

[meitschis]

Here is more, and this is so insane that I am still looking for the flaw

Tesla Semi Regen Roundtrip Efficiency is ~95%. Battery Size is 900kWh. - kiloWatt.page

Based on the 500 mile energy graph, the Semi regen efficiency is insane. Roundtrip is ~95%, and one way is ~97%. The net cost of climbing/descending 1000ft elevation is 1.5kWh, less than the cost of driving one mile.

kilowatt.page

Based on the 500 mile energy graph, the Semi regen efficiency is insane. Roundtrip efficiency is ~95%, and one way is ~97%. Battery size is 900kWh based on the Grapevine part.

Some fine print. This is for ascending/descending. It may be different for acceleration/deceleration. Or not. It also depends on how heavy that truck really was for the 500 mile run. And the battery size (that calculation also depends on the weight on the 500 mile run).

 

[scottf200]

Related: my google maps URL with waypoints I created a few days back: G maps of route w/waypoints

 

[meitschis]

Related: my google maps URL with waypoints I created a few days back: G maps of route w/waypoints

I only put two waypoints, and then the routing did something reasonable.
If I click on your link above I get a few extra back and forth, including one at the grapevine and a detour in Los Banos. Maybe a weird Google mapping thing.

 

[scottf200]

I only put two waypoints, and then the routing did something reasonable.
If I click on your link above I get a few extra back and forth, including one at the grapevine and a detour in Los Banos. Maybe a weird Google mapping thing.

View attachment 883671

I see what you mean. I think it is because when you just give Google Maps a town/city instead of an address it picks a lat/long which may not easily be accessible from the highway traveling a particular direction. If I pick that Shell station (9069 Grapevine Rd W, Lebec, CA 93243) then it is more 'normal'.

 

[scottf200]

FYI on the 500 miles.

Where things got strange is when O’Connell, according to the article, talked about the range of the Tesla Semi:

PepsiCo’s new Semis can haul Frito-Lay food products for around
425 miles (684 km), but for heavier loads of sodas, the trucks will do shorter trips of around
100 miles (160 km), O’Connell said.

Via: Pepsi talks Tesla Semi; exec makes strange comments about the electric truck's range

 

[MP3Mike]

FYI on the 500 miles.

Via: Pepsi talks Tesla Semi; exec makes strange comments about the electric truck's range

Of course Electrek left out this sentence from the original article: Exclusive: PepsiCo to roll out 100 Tesla Semis in 2023, exec says

PepsiCo then will also use the Semis to haul beverages in the "400 to 500 mile range as well," O'Connell said.