Where will the diesel fuel come from if we do replace gasoline engines with EV's?

[ALBERTAFARMER4]

Nope autonomous or not, big or small, doesnt change the overall amount of work required to put a crop in. My math is there prove it wrong. Cute fluffy videos though.

Big or small changes the math a LOT. What are you talking about?

[shtferbrains]

Big or small changes the math a LOT. What are you talking about?

So the smaller implement size is the most energy efficient?
60 one ft units are more energy efficient than one 60 ft?

[AlbertaFarmer5]

So the smaller implement size is the most energy efficient?
60 one ft units are more energy efficient than one 60 ft?

Keeping with the air seeder example. The biggest horsepower user by far is the draft of the implement in the ground, that won't change. The fan is probably next and that could be eliminated completely. If you want the autonomous machine to run as long on a fill as the air seeder does then the dead weight per unit won't change very much, but the weight of the frame and supporting structures would definitely be less per unit. All the parasitic losses of air conditioning and operator comfort could be eliminated.
Using a heavily ballasted tractor to drag and implement by a drawbar it's definitely the least efficient setup. Having a completely mounted implement would eliminate the need for all of that ballast, and would have traction efficiencies.

Probably take the autonomous concept further and have refills on the go at every headland and eliminate carrying all of that extra weight.

Very rough ballpark guess probably be 30 to 40% more efficient. Still not possible to charge money 400 amp service given the numbers provided above.