Errr - Plug In Hybrid Feed-In Fantasy
Not a new idea, but still a very crap one!
So we're going to put power from the grid and into battery storage at night to extract during the day, following the numbers through -
Generation Efficiency = 35%
Transmission = 93%
AC > DC = 90%
Battery Charging = 70%
Battery Discharge = 60-80%
DC > AC = 90%
Transmission = 93%
Total process efficiency = 12%
So instead of a straight ~32.5% efficiency of generation and transmission we're going to accept a reduction of 2/3 in order to use PI-HEV's as some sort of electricity reservoir, and that's meant to be green? Are they completely mental?
Not to mention that its a completely unpredictable, unreliable and unmanageable solution to transient power demand during the day. Yes electricity at night is cheaper, but its not any greener now is it.
Plug in hybrids make sense in some global markets, but far from all - and feeding back in is sheer lunacy, it's pie in the sky shite like that which gives electric vehicles a laughable rep. No doubt David Milliband would think it was a great idea though.....