Category Archives: Energy

Battery momentum

More on batteries…this today about Aluminum Ion batteries from Stanford (via the WSJ).  Lower energy density than Lithium Ion, but less volatile, and probably more abundant.  Worth a watch.

Tesla’s CTO speaks

Forget the glitz.  This talk by Tesla’s CTO JB Straubel is largely free of hype and pretty cool. My favorite slide from his presentation (both the video and the slides are posted):


How many people live in that patch in Nebraska?


Straubel makes the point that it wouldn’t be practical to build a giant square of PV, and that the square footage would be distributed widely on rooftops etc. Good distribution reasons include weather, transmission distance, national security, etc.

But if you’re an optimist about what could be achieved if a gun were put to our collective heads, this should be encouraging. Too bad it may come to that.