It's in the second part of the video; don't know if it's available outside of Canada and it's in french by the way.
http://ici.radio-canada.ca/nouvelles/economie/2014/11/27/003-super-batterie-hydro-quebec-conception.shtmlBasically the battery should be cheap and able to store the energy of ten wind turbines. (It should be ready in two or three years.)
It should be able to offer a autonomy of 500km for cars at only a fraction of the price of the batteries used by Tesla in five years too. In ten to fifteen years they aim for the same autonomy as gasoline.
This is the kind of things that need green technologies, new better batteries. With that solar and wind powers are much more viable as energy can be stocked, cars don't need petrol and we can imagine batteries linked to houses and industries so they can have some autonomy in case of power outage.