The
$44m
dry-cell
battery
system
will
be
capable
of
storing
36MW
of
power
from
Duke
Energy’s
153MW
Notrees
wind
farm
in
west
Texas.
It
will
discharge
energy
onto
the
grid
whenever
demand
for
electricity
is
highest,
not
just
when
turbines
are
operating.
Duke
is
matching
a
$22m
US
Department
of
Energy
(DOE)
grant
to
cover
the
cost.
“This
is
the
first
large
energy-storage
and
power-management
system
built
in
the
mainland
US,”
Coe
says.
“It
will
take
intermittent
wind
and
turn
it
into
firm,
dispatchable
power.”
In
March,
Xtreme
Power
installed
a…
