The
tough
news
is
that
the
current
cost
of
both
technologies
has
been
revised
upwards
since
the
UK
Carbon
Trust
last
priced
them
in
2006.
Its
latest
study
pegs
tidal-stream
energy
at
£0.29-0.33
($0.46-0.52)
per
kWh
and
“far-shore”
wave
energy
at
£0.38-0.48.
But
the
Carbon
Trust
says
both
technologies
can
be
cost-competitive
with
onshore
wind
and
nuclear
by
2025
—
earlier
than
many
previous
estimates
—
and
marine
energy
has
much
more
potential
for
cost
reduction
than
other
renewables,
given
its
immature
state.
And,
having
undertaken
the
most
in-depth
study
of
tidal…
