(Reuters/Lucy Nicholson)

Elon Musk is expected to take to the stage shortly at Tesla's design facility near Los Angeles to announce a pair of innovative new batteries.

One will be a "home" battery, intended to store power from solar panels and enable customers to bank grid electricity from non-peak periods and use it during peak times, saving money.

The other will be a much larger "utility scale" battery that could be used to run an entire business, off the grid.

Of course, Musk could have some surprises in store for us.

We'll be updating this post as the news breaks and Musk lays out his plans, so check back often! The livestream can be viewed here. It's going live at 11:45 ET/8:45 PT, according to Tesla. In the meantime, here's Musk tweet about the big announcement:

From Tesla's facility in Hawthorne, south of LA, we're already seeing some photos on social media of what look like some pretty huge batteries:

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