On 3/22/21 8:26 PM, (-Phil-) wrote:
I've already covered this subject extensively in several YouTube videos: https://youtu.be/lXokJEzXwaI https://youtu.be/UkRk2OQI7RE
Thanks, I was mostly unaware of the interest in the subject. I can not pretend to fully comprehend your conclusions but I accept them.
This is more investment research for me than any proposal to modify a Tesla. Tesla is not known for being caught flat footed while competing in the market. Tesla has disavowed any excursion into V2G/V2H. Yet VW has just announced that capability. Has Tesla been caught flat footed? Or does Tesla have surprises in store for us? I had not previously considered VW to be a real contender against Tesla in the EV market. Before their "Power Day" announcement, I would not have considered a buying a VW. Now, I am reconsidering.
A less desirable solution than the AC in, AC out, that you explored is DC out to an external gridtie/island inverter. People have claimed that it would not be possible to get DC power out of the charge connector on a Tesla. I'm skeptical. Will you offer an opinion?
Tesla specifically will void your warranty if you use your car for this. The battery chemistry is not optimized for it, and excepting for emergencies, it just doesn't make sense.
Teslas have had 80 amp chargers and Wall Connectors. That would be 20kw that could presumable come out also. The Tesla motors can be supplied, what?, 600kw from the battery? PowerWalls do only 5kw in and out from each battery unit. A single battery unit is sufficient for many situations. Tesla rarely to never configures more than 4 battery units on a PowerWall. That is, a Tesla car, with onboard gridtie/island inverter, can have at least the power capability of the largest PW. A Tesla car battery can have near twice the energy storage of the largest PW configuration. I just don't see that 20kw from a Tesla car for V2H/V2G could be much of a strain.
Have you contemplated the possibility that Tesla will offer an external unit that extracts DC power from Tesla cars?
Incidentally, Tesla has been offering abysmal service on PowerWalls. Do you know of any 3rd party service available?
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