Tesla, Elon Musk Introduce The Home Battery

Tesla Motors Inc (NASDAQ: TSLA) is hosting an event this evening to unveil a new product line. The presentation is expected to begin at 8:00 p.m. PT / 11:00 p.m. ET; below is a live blog of the event.

12:37:20 a.m.: The event has ended.

12:36:47 a.m.: Powerpack and Gigafactory will continue to use Tesla's open source policy.

12:35:50 a.m.: Musk: What we're designing in the Gigafactory is (essentially) a giant machine.

12:34:23 a.m.: 900 million Powerpacks could be used to power every home in the world. You would need 2 billion to power everything else.

12:31:42 a.m.: Battery will start shipping in three to four months. Ramp up will be slow initially.

12:30:21 a.m.: Musk: "You can order the Powerwall right now on the Tesla website."

12:28:29 a.m.: Solar panels + Powerwall will allow users to go completely off the grid, Musk said. The batteries are designed to be stacked. Up to nine Powerwalls can be combined.

12:27:50 a.m.: Musk said that the battery "looks like a beautiful sculpture on the wall." It will be sold in multiple colors.

12:27:11 a.m.: The Powerwall battery looks much smaller and smoother than the one seen in pictures ahead of th eevent.

12:26:41 a.m.: Musk: The problem with existing solar batteries is that they suck.

12:25:01 a.m.: Musk said that a very small amount of batteries are needed to transfer from fossil fuels to solar energy.

12:24:39 a.m.: Musk: It's important to smooth out energy generation and retain enough to use at night.

12:23:27 a.m.: Musk said that very little land is needed to get the US off fossil fuels.

12:21:16 a.m.: Elon Musk thinks Powerwall is a "fairly obvious" solution. Said the solution involves two parts. The first is the sun.

12:20:23 a.m.: The event has finally begun.

12:16:14 a.m.: Tesla fans are getting very antsy:

12:12:54 a.m.: For the record, all of the information Benzinga has received thus far has come from Twitter (as noted below) or the official press kit. The event itself has not started yet.

12:10:23 a.m.: Tesla has also partnered with SolarEdge, a global player in the PV inverter market. The two firms partnered "for the joint development of a PV storage and backup power solution for the worldwide residential solar market."

12:09:37 a.m.: Tesla is collaborating with TreeHouse (a sustainable home improvement store) to sell Powerwall.