Do you have a source for Elon's statement?
In what way is powering your house different than powering the car?
I am talking about a Tesla installed connector wired to the main battery and a Tesla provided inverter mounted outside of the vehicle and wired to the house's main panel via a transfer switch and connected to the car with a Tesla supplied cable. In other words, a properly engineered system designed for the intended purpose.
I wasn't trying to sound smug, just reacting to the statements about the battery. The batteries in the car are the same as in the Power Wall, just more of them. Since Tesla already has the inverter (the one that works with the Power Wall), using it for emergency power in your house is an easy thing to do. I'm sure that they do not want to dilute sales of the Power Wall, but they might change their mind someday.
WOW! Were not talking about sending power back to the utility grid. We are talking about an alternative to a standby generator for infrequent power outages. Big difference. The transfer switch isolates the power from the battery (through the inverter) to the customers internal (household) circuits. No danger to utility workers. It's the 'infrequent' part that makes it viable. Running your household loads is no different than driving the car. Probably less power required for most people. For instance, my highest utility usage last year was 1250kW-Hr for a 30 day period. That is an average of 41.7kW-Hr per day. My utility bill does not tell me my peak usage, lets say for the sake of discussion that it is 100kW-Hrs. As is typical for standby generator systems, not all loads are served by the generator. So, during a power outage, if we keep the AC, the frig, the well pump and minimal light running, I think that we are within the capacity of the car's battery as a 2 hour outage would be about 3.5kW-Hrs. This would leave plenty of range in the car. Doing this occasionally, for us it's once or twice a year for 1-2 hours, should not be a problem. This would sure beat the price of a standby generator and it's attendant maintenance.
that most electric car owners are also probably solar installation owners. As such all the heavy lifting equipment is already in the garage (grid tie inverter, smart meter). All that is needed is a bit of switching gear and some software and algorithms. The economics are all there too as the cost of peak electricity here in Sydney is 6x the cost of off peak (54c vs 9c roughly). I understand that most areas around the world do not have such expensive electricity and many people still have the whirly disc meters and so are not charged peak rates but that this status quo can not be maintained if millions of cars are connected to the grid.
The study was an interesting read. The comments were- well, WOW. Accusations of anti-battery trolls preparing the non-peer reviewed study. Given the splatter of comments, I'm not trusting anything from the paper. But.
