Hi Skeez;   Thank you for the link.  That's interesting, and indeed progress is being made.  The article describes electrical grid energy production, and recent daily/monthly spikes.  An overall compilation of CA's electrical energy in the longer term can be found here:  http://www.energy.ca.gov/almanac/electricity_data/electric_generation_capacity.html

I make it that in 2015, hydropower/wind/solar electrical energy on an annualized basis was still ca. 35% of natural gas - fired turbines.  We'll see how 2017 pencils out eventually, with the above.  A huge jump in two years?

Note however that the 'Independent' article barely mentions transport (as noted previously, the elephant in the room).  San Francisco hopes to have public transport on 'renewables' by ... 2054.  The states of Massachusetts and Hawaii similarly aim for the year 2045.  This is basically the generational timeline (no pun intended) described by the Stanford group (perhaps no coincidence).