I think it was known to people who took apart the AC to DC inverter in the Model 3, but not relevant until recently when people are speculating about V2G.
Electrek never said it was new in the article, and the date in the corner of the schematic is very blurry but these are the parts that are definitely legible: "Date: Sunday August 2X 20YY". We know YY cannot be 20 because August hasn't happened this year yet. It could be as late as August 2019, but to me the X looked like a 0, a 5, a 6 or an 8, and August 26 2018 happened to fall on a Sunday during the time period when this engineer worked for Ford, so that made the most sense.
What so many of these people don't understand. This is not about buying power at your 'night rate' (6 cents) and selling it at your 'day rate' (15 cents) . Sure, that is possible, and there is some money to be made there. This is about Tesla buying power at the spot rate of 2 cents a kwh and selling it at 40 cents. This is about absorbing free wind power (or even paid to take it) and selling it during the day. This is about providing frequency control services at $50,000 a shot. 3000 cars can give a 10 megawatt service. With autobidder Tesla is going to have a new income stream. This is before them adding their own solar and megapacks.
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