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From YouTube: Jackie Strube - Housing as a System | #AWClimateAssembly
Description
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A
A
So,
first
of
all,
what
is
our
housing
like?
Well,
there's
a
lot
of
it.
We
have
29
million
homes
in
the
uk.
It
is
aging
36
was
built
before
1944,
but
some
of
it
is
new,
so
new
homes
add
about
one
percent
each
year
it
is
energy
hungry
and
uses
around
30
of
the
nation's
energy,
and
it
is
owned
by
millions
of
different
people,
so
63
owner
occupied
20,
private,
rented
and
17
councils
and
housing
associations.
A
So
where
do
we
use
energy
in
the
home?
We
all
need
to
use
it
heating,
hot
water,
electrical
appliances
and
so
on,
but
the
it
is
actually
space
heating,
which
uses
the
most
energy
around
60
and
the
reason.
Why
is
because
we
lose
heat
through
the
building
fabric,
mostly
walls
and
roofs,
but
a
bit
through
doors,
windows,
floors,
etc.
A
Typical
three-bedroom
house,
the
annual
energy
use,
is
around
eighteen
thousand
kilowatt
hours
a
year,
which
translates
in
essentially
gas
centrally
heated
home
to
about
4
000
kilograms
per
year
of
co2,
so
quite
significant.
So
what
difference
can
home
improvements
make
well?
The
fabric
first
approach
is
the
insulation
and
draught
proofing
of
the
building
fabric,
which
can
result
in
major
improvements
to
heating
bills
and
energy
consumption.
A
In
this
graph
here
produced
by
the
energy
savings
trust,
we
can
see
that
loft
cavity
wall,
solid
wall
insulation
makes
quite
a
saving
to
co2
efficient
space
heating,
for
example,
using
low
carbon
electricity
so
by
air
source
heat
pump,
can
make
a
significant
difference
and
the
government
is
encouraging
the
installation
of
these
sort
of
technologies.
A
We
can,
of
course,
add
eco
bling
solar
panels,
for
example,
for
hot
water
or
electricity
generation.
It's
really
effective,
but
if
the
demand
for
energy
is
still
very
high,
then
they
can
only
make
a
limited
contribution.
A
Other
measures,
such
as
low
energy
lighting,
smart
meters
and
controls
all
help
to
manage
the
demand
for
power.
So
how
do
we
measure
energy
efficiency,
energy
performance,
energy
performance
certificates?
Are
the
energy
labeling
system
for
homes
and
if
you
buy
or
rent
a
house
a
home,
you
will
need
to
have
one
of
these,
so
they
the
the
rating,
runs
from
a
to
g,
with
a
being
the
best
and
g
being
the
worst.
A
As
we
can
see
here,
and
the
average
achieved
in
the
uk's
housing
stock
is
a
d
at
the
moment,
so
a
lot
of
room
for
improvement,
older,
solid
wall
houses
perform
worse
and
are
the
hardest
to
treat
new
builds
performs
best
because
we
have
the
building
regulations
in
full
enforcing
a
minimum
standard,
and
the
government's
plans
are
to
improve
that
further.
A
We
do
need
to
get
to
a
a
an
energy
rating
around
the
middle
of
b,
to
meet
an
80
carbon
reduction
by
2050
and,
obviously
a
bit
more
for
100.
So
this
significant
change
needed
to
save
the
energy
we
need
to.
A
I
just
wanted
to
give
you
some
examples.
I've
pulled
all
these
from
right
moves,
so
they're
houses
that
are
on
the
market
at
the
moment,
they're
all
in
worthing.
So
this
is
a
two
bed
house.
This
is
a
real
gas
guzzler,
it's
a
solid
warehouse
built
in
1830.
A
It
looks
like
it
hasn't
had
any
insulation
works
or
double
glazing,
so
it
has
a
very
low
rating
of
energy
efficiency,
28
28th
sap,
sorry,
that
is
how
it's
f
rating,
which
could
become
an
a
with.
I
suspect
quite
substantial
improvements.
A
Three
bed
mid
terrace
1930s
does
a
bit
better.
I
assume
this
has
cavity
wall,
insulation
and
double
glazing
and
that
achieves
a
rating
of
a
d
could
potentially
achieve
the
rating
of
b.
A
New
build
by
contrast,
is,
is
much
higher
rating,
so
we've
got
a
b
rating
could
potentially
achieve
an
a
so,
as
I
said,
you
know,
it's
building
rigs
enforce
the
minimum
standard
for
new
building.
So
what
next
we
need
to
transform
our
stock?
We
need
to
do
it
at
scale.
How
can
we?
Where
do
we
start?
Do
we
just
carry
on
bit
by
bit
doing
a
bit
of
insulation
here
and
there
or
do
we
need
a
major
retrofit
program
to
be
pushed
forward?
Who
can
help
with
this?
A
We
can
learn
from
experience,
have
been
great
pilot
schemes
and
there
have
been
ongoing
insulation
programs
over
the
years
and
we
know
what
works
and
what
doesn't.
There
are
specialist
advice,
agencies,
suppliers
and
consultants
who
can
help?
So
how
can
we
pay
for
the
improvements?
We
need
a
massive
amount
of
investment
for
this.
There
is
a
bit
of
a
start
in
the
2
billion
pound.
A
Green
homes
grant,
which
was
announced
as
part
of
the
green
jobs
budget
earlier
this
year
by
the
chancellor,
and
that
is
money
for
homeowners,
and
it
will
be
for
local
authorities
and
housing
associations
to
install
green
measures,
there's
also
the
ongoing
energy
company
eco
funding,
which
has
mainly
been
used
for
insulation
for
people
on
the
low
incomes
and
benefit.
A
There
are
also
payments
from
electricity
suppliers
for
the
renewable
generation,
so
under
the
smart
export
guarantee,
so
that
encourages
installation
of
solar
power
and
certain
heating
systems
barriers
to
achieving
this
degree
of
change
that
we
need
the
cost
and
complexity
of
it.
The
disruption
to
homeowners,
while
workers
carried
out
even
a
loft
insulation
project
can
be
quite
disruptive,
emptying
the
loft
and
boarding
and
so
on.
A
Also,
we
just
need
to
get
people
interested
and
motivated
to
to
do
these
sort
of
changes
to
their
homes
and
at
the
moment,
I'm
not
sure
that
there
is
an
awareness
of
the
importance
of
this,
and
people
would
rather
spend
their
money
on
a
new
kitchen
or
bathroom
than
than
actually
invest
in
energy
improvements.
A
So
perhaps
you
can
have
a
think
about
all
these
things.
I
hope
it's
been
a
useful
introduction
and
I
look
forward
to
discussing
with
you
further
thank.