Real world heating data for 2024 in the cold

[lightspeed]

4 or 5% for long highway trips for me. Attached screenshot is a cross country trip in my 23 from BC to Ontario and back in early April, so cool temperatures that would've been ideal for a heat pump. I have another 2000 km trip where the trip meter said 4%. I did one trip in -30 C that was 17% but the heat pump is not going to help much in those temperatures anyway I think.

That's my point - yes, the heat pump can be a big reduction in the energy used for heating, but that energy for cabin heat is pretty small in the big picture. Even if it's an 80% reduction, which seems optimistic, it would mean climate energy went from 5% to 1%. A ~4% increase in range so ~12 miles on the ER battery.

For an efficient small car it's a bigger percentage. For our behemoths with the gigantic battery, cabin heat isn't as big of a deal. The way I see it.

(Edit to add: that 5% number below includes 7 or 8 nights sleeping in the truck with the heat on.)

It would be nice to get controlled data on the difference. But I think you're right that it's not going to be a big difference.

The loss in range is dominated by the battery temperature. When people lose 30% or more in the cold, it's mostly from voltage sag due to the cold battery.

It takes around 30kWs continuous to push these trucks down the road at 70mph. So, if the resistance heater settles in at 1.5kW, it's a 5% range reduction. If the heat pump is 3 to 1 efficient, then it drops to a 1.5% difference (roughly).

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