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Otto_Harper

(822 posts)
7. I don't wish to belabor the point, but again
Sun Oct 22, 2023, 02:21 PM
Oct 2023

Just saying "hookup solar panels to charge your car".
A current technology EV carries about 70KWH of battery capacity. To charge something like that in a single very sunny day will require enough solar panels to run an entire house. Again, such systems would require massive installation at the single home level, or, again, upgrade of the complete power grid at a scale nnot currently even feasible.
We will not achieve the results we need to by just pointing at the problem and muttering impractical solutions. I think the actual solution has already been here and bypassed.
If we think of the current EV as an EXTERNAL combustion engine (i.e.) its motive power still comes substantially from fossil fuel combustion, just at power plants instead of within the car, then the real issue is optimizing how we achieve the greatest reductions of carbon emission and speed the transition to fullindependence from petroleum and coal. I think this was exemplified by the Chevy Volt. In this car, a sufficient battery was carried to allow normal daily around-the-town missions without needing to use the ICE engine. But, when extreme range was needed, or the ability to operate without charging facilities, the ICE engine was available. This reduced by a substantial the weight of the battery which the car needed to haul around, increasing miles-per-energy efficiency.
By using such an architecture as a transitional step while manufacturing and engiineering catches up to the current needs, it reduces the needs for immediate Grid upgrades, immediate massive Lithium development and immediate buildout of charging stations and the grid needed to support them.

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