I think if you could set your own price limit, and the software can account for it somehow in terms of de-rating the battery warranty, it would work.
The big factor I'm not sure about is the added COGS to the car. This [1] seems to say it's only $200-$300 in added cost of parts in the car. It's not clear if that's in addition to the added cost in the charge port, or instead of.
One important factor is even though the battery is capable of feeding perhaps up to 100 KW, if your charger is on a 40-amp 240v circuit, you are limited there to just 9.6kW. This drastically limits your ability to profit in the case of a spike, but then again, if there are several hundred thousand batteries competing with you, it's less likely to need to pull more than 10kW from any one battery.
The big factor I'm not sure about is the added COGS to the car. This [1] seems to say it's only $200-$300 in added cost of parts in the car. It's not clear if that's in addition to the added cost in the charge port, or instead of.
One important factor is even though the battery is capable of feeding perhaps up to 100 KW, if your charger is on a 40-amp 240v circuit, you are limited there to just 9.6kW. This drastically limits your ability to profit in the case of a spike, but then again, if there are several hundred thousand batteries competing with you, it's less likely to need to pull more than 10kW from any one battery.
[1] - https://www.nrel.gov/docs/fy17osti/69017.pdf