josephkk
Guest
Mon Jan 23, 2012 5:14 am
On Sat, 21 Jan 2012 09:34:12 -0800, "Paul Hovnanian P.E."
<paul_at_hovnanian.com> wrote:
Quote:
Seriously, the problem isn't just the 'hose' or vehicle battery. Its the
high and variable demand that filling stations will place on the local
power grid when they begin to approach the delivery volumes of petrol
stations. To keep the peak demands down and tolerable, quite a bit of local
energy storage will be required. Even more if utilities want to exploit off
peak (late night) excess system capacity.
This isn't all bad. Electric utilities have done quite a bit of R&D on load
leveling local energy storage. If the EV market helps attract more
investment into this area, the price per kWh will come down. Better yet,
local energy storage stations can do double duty, filling cars as well as
providing emergency local peaking power back to the grid.
Yep. Even serious megaflywheels aren't up to 100 gigajoule range. Maybe
some of the phase change energy storage ideas will do the job. Then again
maybe not.
?-)
