Tesla to home converter

Tesla to home converter

Not sure if it was already discssed here.

Nissan has a product in Japan that can convert Leaf battery power to household electricity to power a home for a day or two in case of emergencies. Product is called Leaf to Home.
With a big storm on NorthEast, I bet some Tesla owners wished they had such a converter. 85 kw/h battery can power a mid size house for 2-3 days easily.

With generators costing few thousand dollars to buy and install. A simple add-on to the charge station may be very well worth it...

stevenmaifert | February 8, 2013

Even if you could extract the DC from the Model S battery, the cost of an inverter to power a typical U.S. home makes that generator look very attractive:

If you're really serious, Solar City can set you up with Tesla technology that will power the basics in your home "for a few days" : I have no idea what it costs, but will probably still make that generator look attractive :)

Manta | February 9, 2013

I asked a rep about the ability to send electricity from the car to a home and was told that the inverter in the car was designed to only work in one direction (i.e. to charge the car). So unfortunately, the answer is no.

diegoPasadena | February 9, 2013

From the Tesla Warranty, page 6:
"This New Vehicle Limited Warranty does not cover any vehicle damage
malfunction directly or indirectly caused by" snip "Using the vehicle as a stationary power source".

Joel N. Weber II | March 2, 2013

I thought the inverter in the car was used to power the AC motor, and that the charger module was not an inverter.

The New Vehicle Limited Warranty doesn't cover tire damage; if people don't react to that clause by keeping their cars permanently in their driveways, why should people avoid careful use of the vehicle as a stationary power source when used in ways unlikely to cause damage?

I would expect that for Supercharger compatible vehicles, the hardware might already be capable of sending DC out of the car, and if it isn't already capable, a slightly different design with that capability would probably not cost much more.

I think the US Department of Energy has been recognizing that the cost of inverters limits solar adoption and is looking to drive inverter costs down, which may make using the car as a stationary power source more affordable in the future.

marklhartman | March 2, 2013

Garage floor dyno, cruise control, and a generator?

Brian H | March 3, 2013

The charger is the opposite of an inverter, a rectifier. It "flattens" AC into DC, to feed the battery.

nwdiver93 | March 3, 2013

This is one of those "it's not a matter of if but when". The supercharger already connects directly to the battery so I would imagine that the hardware is there to bypass the on-board charger. You would probably require an external inverter designed to parallel to your home.

I think the primary reason Tesla is leery of V2G is that battery life is going to be viewed as miles traveled not kWh exported. Once this is less of an issue and "Time of use" metering is more common it WILL happen.

church70 | October 10, 2013

Solar City can set you up with Tesla technology that will power the basics in your home "for a few days" @ $20,000 no thx the Leaf to Home is $3900 come on Tesla this so cool love it but not @ 20k for a 10kw the Leaf is 24kw $3900

Car t man | October 11, 2013

Don't worry, someone will make it. But they will need to have access to the car's diagnostics, electrics, etc.. But it will happen..
Basically the car becomes a large UPS.

The Pentagon calculated electric cars could save it a lot of money compared
to current mobile power banks.

Basically this is back to grid technology. Mini E has it so you can return
power to the grid. This is a very helpful technology for the utilities since
it helps them level off peaks of demand and lack thereoff, which is very
expensive otherwise and requires keeping expensive hardware and other overheads...

stevenmaifert | October 11, 2013

Read your warranty before you get too excited about using your ModS for a stationary power source.