Save the Planet - From Nonsense
Some of my gripes about what Australia is doing wrong in
terms of promoting sustainability.
Promotion of Photo Voltaic (PV) Panels for electricity
generation on individual houses prior to other more cost
effective methods of energy saving. PV panels on
your roof are sexy. PV panels are a status symbol and
clear statement to the world of a persons commitment to
sustainable energy. People like to be able to say that
they are self sufficient in energy and in fact feeding
energy back into the grid. This is all fine if you have
got large amounts of money to spend (or you are in an area
without mains supply electricity). My concern is that they
are not the most cost effective method of saving energy
and carbon loading on the environment. If the general
populous wants to get the most effective return on their
investment in sustainable technology they should firstly
look at and implement the other multitude of energy saving
possible before ever considering PV panels on their roof.
If after having done all these things if they still want
to spend money on PV panels then go for it.
My other issue with having individual photo voltaic
arrays on each house is that it is very inefficient way to
install solar electricity across the community. Each house
has individual set up and electronics which is more
expensive per kilowatt installed compared to a larger set
up. For example a 10 kilowatt inverter is cheaper to buy,
install and maintain than 10 separate 1 kilowatt
inverters. A 20 kilowatt Inverter is cheaper than two 10
kilowatt inverters. Panels are cheaper when bought in
larger numbers. The way photovoltaics should proceed in
urban areas is that larger systems be set up on larger
buildings with appropriate roof size and orientation.
Systems could be set up on schools and churches, halls and
large commercial buildings across the community. This
could create a small income source for these bodies as
they hire out their roofs. The way that I see that it
could proceed is that small consortia of private people
could band together with private capital to invest in the
local systems. The power would than be sold back into the
grid. An appropriate feed in tariff would need to be in
place for this approach to take off which should be set at
a level so that a reasonable investment return could be
achieved from a moderate size installation (this may be
less than the fed in tariff necessary to make individual
household systems profitable therefore providing a better
return for Government and the community). Alternately (or
in conjunction) Government could directly fund
installation of the PV panels on public buildings like
schools. A large program like this may be more economical
($/ kilowatt produced) for Government than offering
subsidies to private people or groups. However it is also
probable that there are even more economical ways of
setting up photovoltaic electricity generation - perhaps
using solar concentrator technology. These approaches need
to be fully explored and adopted if more economical.
Alcohol as a Car Fuel. If the energy input to the
production of the alcohol
for car fuel is the same or greater than the energy
output from the alcohol fuel and if the energy for the
production has come from fossil fuel then nothing has been
achieved. (I have heard two different accounts of the
energy used for alcohol production, one was that the
energy used was the same as the energy in the alcohol. The
other was that that the production energy use was 75% of
the energy in the alcohol.) Even if the energy input is
not as great as the energy output is there sufficient
benefit to warrant gearing up for this production when
greater levels of cuts are required than can be provided
by alcohol fuel. The money may be better invested in other
technologies.
The other problem with alcohol as a fuel is that it
diverts what may otherwise be food products, such as corn,
from food supply to alcohol production. Even if the corn
or sugar cane is produced specifically for the alcohol
industry it can effect the price of the product for food.
The greater the demand for a product the more likely the
price will remain high. This could even impact upon the
price paid the poor in third world countries.
Globalisation means that if a higher price is available
elsewhere in the world (for say alcohol production) then
the product will go to that place, rather than feeding
people. This problem can only be solved if the alcohol is
produced from a agricultural, industrial or domestic waste
product and the distillation process for the production of
the alcohol is powered by renewable (solar) processes.
Hybrid Cars. These are cars that have both an
electric motor and battery bank, and a petrol / diesel
motor and some very elaborate electronics to switch the
car between the propulsion mode, thus producing higher
fuel use efficiencies compared to standard motor vehicles
of similar size. However with this technology there is a
large embodied energy in the production of the vehicle and
also will be required for recycling of vehicle at the end
of its useful life. Overall the total energy for the
lifetime of the vehicle could be more than a small(er)
standard vehicle. Even if there is a saving the level of
the saving may not be sufficient to warrant the massive
costs of gearing up for the mass production of these
vehicles.
For any of these types of technologies that are proposed
as solutions to reducing greenhouse gas production (eg.
hybrid cars, alcohol fuels and others) analysis needs to
be done to to ensure that over the total life cycle there
is significant greenhouse gas savings, not just in the
usage phase, and that the cost of gearing up for the
technology is warranted. As a starting point a technology
which requires significant capital and time investment to
establish should return greenhouse gas savings of at least
75% (Factor
4
Savings) to be considered worthwhile pursuing, as we
should be aiming at at least a 75% decrease in Greenhouse
gas production to tackle the enhanced greenhouse effect
and consequent climate change.
It is ridiculous that the local manufacturers are going
to produce large hybrid cars, for example a hybrid Holden
Commodore. While this will reduce the energy consumption
compared to a standard Commodore, it will still be above a
smaller standard cars - it will allow people to have that
warm tingly feeling that they are doing their bit for the
environment but if they keep driving 20 - 30K per annum
then they have not done enough. Nothing significant has
been gained. And the $500 million (or whatever it is)
government contribution and company development cost is
wasted that could have been better spent tackling green
house. It supports the mindset that we do not need to
change our lifestyle to tackle greenhouse problems which
is not correct. (Use the $500 million to develop better
batteries for electric vehicles or to otherwise store
solar or wind energy, build a wind turbine factory or
develop geothermal power rather than subsidising large
multinationals).
Use of Planted Trees for
Carbon Trade-Offs. What
qualifies for carbon credits under carbon
trading needs to be carefully determined. For
example I am skeptical about the validity of carbon trade
offs gained by planting of plantations of trees. The
reason is that a planting of trees is not a permanent
carbon store, as is unburnt fossil fuel in the ground.
Once a fossil fuel is burnt the carbon is in the
environment, trees can store it but there is no guarantee
that the storage will last forever: - tree die; or are
burnt or are cut down and their carbon released into the
environment again. In a hundred years can we guarantee
that the coup of trees that was planted as part of a
carbon trading deal in 2009 won't be cut down?
Governments, and policies change. The planting of trees,
should definitely go ahead, but not as part of a carbon
trading scheme, but part of an effort remove already
existing carbon from our environment. The folly of using
trees as carbon store has been further highlighted by the
disasterous bush fires (wildfires) in Victoria (Feb /
March 2009). It is also quite possible that climate change
will lead to a higher frequency of serious fire events in
the future.
Also the trees that are planted for some carbon trade off
schemes are often mono-cultures (or have limited
diversity) rather than having the biodiversity of a
natural forest. In preference to planting these
mono-cultures we should stop clearing of existing natural
forests - however even this should not qualify for carbon
trade-offs.
(If it were to go ahead it would need to be under strict
guidelines. Eg. Planting only to occur on old cleared
land, The land would then need to be protected by
covenants on titles which would prevent future clearing
(or titles transfered to a government body after full
establishment, to be retained as native bush land). Or
else the carbon should be sequestered out of the forest in
some manner.)
There is one possibility for carbon sequestering using
trees - sequestering the carbon in
timber in the ocean - although I still think that
this should be used for taking existing carbon out of the
atmosphere rather than as a carbon trade-off under a
trading scheme.
Housing Star Energy
Rating. The current house
energy
rating system (in Victoria Australia) has some
serious defects. The Victorian Rating system only rates
the house shell for heat flow (although the houses are
required to have either a water tank or a solar hot water
system to pass). There is no consideration of the energy
usage (both gas and electricity) of appliances, including
heating and cooling. So consequently houses achieving a
"satisfactory" energy star rating of 5 stars can be packed
inefficient quartz halogen down lights and have
inefficient heaters or air conditioners. There is also no
requirement for higher efficiency for larger houses nor
any consideration of the embodied energy and carbon
production in the construction (and final demolition) of
the house. As a consequence of this despite the mandatory
energy rating of new houses, recent studies have shown
that newer houses use on average 6% more energy than the
older houses built prior to the introduction of the energy
rating system. This clearly indicates that there is a
problem with the rating system requirements. It is not
giving a desired outcome (although energy usage is lower
than what it would have been without any system at all in
place).
I recently (May 2009) visited a set of display homes in a
new housing estate - I was disappointed to say the least.
First thing I noticed was the odour inside the house. The
air was positively toxic with volatile
organic
compounds (VOCs).
I
could not imagine having to live in these houses for the
first few months until these VOCs have dispersed to a
large extent. It can't be good for the health of the
occupants to live and sleep in such a toxic environment.
Lower VOCs and other odour inducing materials must become
a higher priority for building developers. (The VOCs would
mainly be from the carpets and underlays, painted walls
and other surface finishes and from the manufactured
timber products (particle board (MDF or chipboard) usually
containing formaldehyde glues) and other plastics and
glues in the houses.) (Read more about
VOCs in housing.)
The next thing I noticed was how little consideration had
seemingly been given to energy efficiency. While all
houses must have met the statutory minimum Star rating
there was just so much wrong with the houses. It showed me
how insufficient the current rating system is.
Specifically all the houses where quite big, the smallest
being about 190 sqm floor area with the larger ones over
300 sqms. Also there was no possibility of zoning in the
house. The kitchen, living rooms, lounges and hallways
were all just one big open space, with no doors between
them. You would be forced to heat the whole area even if
you were only using one or two rooms. They all had ducted
central heating and air conditioning through out all of
the house. I could not determine whether this was zoned
with individual room or zone thermostats, or not but I
doubt it on most of them. Vents were located in the roof
so would be difficult to adjust if this was possible. They
all had down lights inset into the ceiling, most of them
were quartz halogen, a very inefficient form of lighting,
although some were compact fluorescent down lights, much
better but still with problems (you still need to
effectively put a hole through your ceiling insulation for
each down light, you still have the 12V transformer
running continuously (or hopefully they at least use
transformers based on pulse width modulation which would
be more efficient) and you still have to have more of them
than other standard CFLs. There was no sign that I could
determine that much consideration had been given to
correct solar orientation and window shading for summer.
Double storey houses were located to the northern side of
other houses eliminating their winter solar access. There
was two houses in the dozen or so that I saw that claimed
to be "7 Star" energy rated and they did have some
efficiency features such as double glazing to most
windows. They even had an internal concrete block wall as
thermal mass - however the benefit of this is questioned
when the houses still had ducted central heating and
cooling (the thermal mass would be largely ineffective if
this heating and cooling system was used all the time the
house is occupied (excluding sleep time) and could in fact
increase energy use). They also still had all the other
faults mentioned earlier (lack of zoning etc.) However at
least they had made some efforts to achieve a higher
energy efficiency - and I note in their advertisements
from the time that they were even advertising the cheapest
of their "7 Star" range at a lesser price than the
cheapest of their "normal" range - so much for the
building industry arguement that it is too expensive to
build in energy efficiency.
All in all it is clear we have a long long way to go. It
is going to be a massive job to fix all current housing
stock let alone the newer stock they are still
thoughtlessly building. It is clear to me that regulation
is the only way to fix these problems - the housing
industry will not do it by itself. The mandatory
"Star" rating needs to be a lot higher and the Star rating
needs to be adjusted so as to give recognition for zoning,
limited house size and also the efficiency of electrical
and gas equipment included in the house. In conjunction
with this there needs to be an education program to
educate house buyers about what to look for in an energy
efficient house and also how to live in an energy
efficient house (as maintaining a comfortable environment
requires a knowledge of how they work - it is not just a
matter of hitting an air conditioning switch).
"Energy Efficient"
Housing Architectural Magazines. Many of these
magazines usually display architecturally designed
supposedly energy efficient houses. These houses are
usually very nice to look at but their energy efficiency
credentials are often questioned. Usually they are large,
have large areas of plate glass windows and high vaulted
ceilings. Often they are littered with quartz halogen down
lights and have things like swimming pools and spas and
the double garage. Many of them are on large blocks in
what looks like a rural setting, so they do not have that
same site restraints that would need to be addressed in a
normal suburban block. They are not the houses for people
who genuinely know what sustainability means and have
embraced the lifestyle. A cursory inspection shows
numerous things that could have been done better. In these
house it is apparent that appearance has taken precedence
over good energy efficient design - appearance over
substance. My other concern is that they give the
impression that to be energy efficient a house needs to be
magnificent looking, architecturally designed. This is not
the case. There is very little relationship between energy
efficiency and how a house looks. Energy efficient houses
can look very similar to non energy efficient houses, so
much so that it would take a trained eye to know the
difference. Sure an energy efficient house can be
architecturally designed and may be good looking but it is
not a necessary requirement. It is not necessary to engage
an architect and have a mega budget to have an energy
efficient house - you just need an experienced solar house
designer. If you can afford it an architect can be used
but they need to know that you are not just interested in
appearances but genuine energy efficiency, a lot above the
measly 5 Star mandatory minimum, even if that means
architectural compromises. Architects and other building
designers should not be able to claim that they are
providing a special energy efficient house design service
if all they are doing is providing the statutory minimum
Star rating. If they do they are just green washing. They
should be providing at least 2 Stars above the statutory
minimum before they are able to claim a special energy
efficient housing design service.
If you want good information on energy efficient housing
design the best book I have come across is the Your Home
manual compiled by the Department of Environment, Water,
Heritage and the Arts of the Australian Government. The
full version of this is available on line,
however if you are building or renovating a house it will
be worth the investment of $50 (Aus) to get a hard copy
version. (Although I note that some ('though not all) of
the case studies in the rear of the book also fall for the
problems referred to above - architectural master
pieces and not normal every day homes that every day
people can afford.)
Greenwashing. Greenwashing
is the situation where the manufacturer of a product (or
service) makes environmental claims for the product or
even just use a Green sounding name, which make the
product sound better for the environment than it really
is. This is a sales ploy aimed at misleading the consumer.
It is despicable and must be stamped out. If a
manufacturer makes an environmental claim this needs to be
justified through an "Environmental Effects Statement"
which would need to be approved by a government agency.
The manufacturer would also be required to include a clear
summary of the statement on the product. The use of the
words such as "Green", "Eco" and "Environmentally
Friendly" would be restricted. One of the tricks I notice
that is in use is that they have one aspect of their
product which may have some green advantage and then label
their whole product as green. An example of this a
cleaning product which is packaged in packaging
manufactured from recycled material. This is good but it
doesn't mean that they should be able to claim that their
whole product is somehow "green" if it is just the same as
other products on the shop shelf.
Wood Heaters are not
environmentally friendly.
Wimpy Politicians and
the Political Process. The introduction of the
schemes and systems necessary to tackle climate change is
going to create pain in some parts if not all of society.
Any change causes pain and while it can be ameliorated it
cannot be completely eliminated. I am concerned that the
politicians will not have the intestinal fortitude to
carry the society with it and carry through with the
changes. The recent Rudd Government reaction to opposition
attack on petrol prices, a knee jerk reaction and a
continuation of the "Me Tooism" of the election campaign
carried over into Government, is very concerning. I
fervently hope this is just the teething problems of a new
Government rather than indicative of how they are going to
react to all challenges of green house and associated
opposition attacks (of which I expect there will be many
from an opposition going for short term political gain at
the expense of Australia's future. Please prove me wrong.)
The other problem with the political process is the
tendency to do what is popular rather than what is
required. So if something is seen as being potentially
popular, such as the local manufacture of hybrid cars,
this will be rushed through without proper analysis. Basic
questions (such as: will it make significant greenhouse
gas reductions over the total life cycle cost effectively,
is there a better way to solve the problem, is there a
better way to spend the money, a more cost effective way,)
may not be asked in the political rush. This complete
analysis needs to be done and then action taken on the
basis of the analysis, not political expediency.
Politicians need to be investing more in research and
also practical implementation. Government should be
building wind farms or solar plants. If carbon
geosequestration is seen as an important part of the
solution then Government should put not just a little bit
of money into it but a lot and now (although I would
prefer the industry to invest the largest proportion of
funding). Geothermal power, solar chimney power - the
same. As it is clearly a market failure it is incumbent on
the Government to invest whatever money is necessary.
There should be a Government authority which is charged
with investing in this research and investing. It should
have billions (built up over years). It should be on the
basis that money invested will be in the form of capital
investment, with returns hoped for, rather than grants to
private industry. It will be risk capital as not all
projects are going to bear fruit, but that's OK as it will
be working on the cutting edge. If industry won't gear up
quickly enough then Government should go into the business
of electricity generation, like it use to in the past
(remember the SECV and other state authorities - ah
nostalgia!). The universities and CSIRO should have large
departments dedicated to this problem.
Governments around the world have recently (October 2008
and onwards) come up with TRILLION$ of
dollars (and Pounds and Euros) to bail out the financial
system with little apparent trouble. We are now entitled
to treat with contempt (if we didn't before!) any claims
by politicians that saving the environment by changing to
a carbon free lifestyle will cost too much. The money can
be found if the priority is recognised - which it must -
the environment is much much more important than the
economy. We can live without a healthy economy (if we
share resources equitably) but not without a healthy
environment. Rudd (when he was Prime Minister) gave away
billions of dollars as economic stimuli (in December
2008). I certainly don't begrudge needy pensioners a
bonus, however a lot of money has gone to people who are
perhaps not so desperate. This is clear as Rudd is
encouraging the people to go out and spend it, not
necessarily on basic requirements but just to "get the
economy going". The package should have been better
targeted, A significant proportion of this "economic
stimuli" money should go to building solar generating
infrastructure. In this way the money would not be
frittered away and would still stimulate the economy while
significantly boosting the solar generating industry and
decreasing green house gases.
And again Rudd gave away $42 billion (February 2009) - a
lot of it frittered away with grants to the not so needy
with exhortations to spend - on anything! What a waste. A
few welcome crumbs given to sustainability - but it is not
enough. Sure schools are important but a portion could
have been invested in direct renewable electrical
generation. Even one billion dollars would build quite a
few wind turbines. Five or six or more billion would be
even better. If they don't wanted to build them directly
they could have put a tender (or tenders) out to the
market for the purchase of sufficient green power to run
all Government business for the next ten years (with
appropriate phase in), on the proviso that all the Green
Power must be new Green Power. What a boost to the large
scale green power industry. If they needed more they could
enlist the other levels of government, state and local
government with appropriate financial incentives to do the
same. It would be massive.
I call on all politicians to do what is right for the
environment rather than what is politically expedient.
After all if John Howard can introduce an unpopular policy
such as the GST (and then manage to blame the Democrats
for it!) this shows that the introduction of unpopular
policy and/or policy that causes pain to some parts of the
society is possible. (This is not praise of Howard, just
an example of what is possible.)
Politician need to act in the near future unless they
want to be condemned by history and by those who will
still be living while climate change begins to impact
significantly. They can't say they weren't warned of the
consequences. I want Governments to stop the talking
and start the doing.
However I will say one thing in support of politicians:
despite what I have written above I believe that most
politician start out with the best of intentions and would
love to be able to implement in full their many ideas
however the political process does not allow any one
politician implementing his policy completely and
even doing what he/ she knows is right at all
times. In one sense this may be just as well - we
don't dictatorship. However it means what ever is done is
a compromise. Also politicians always have one eye on
public opinion - they want / need to get re-elected so
will not do anything to radical that would hurt people
financially or change their lifestyle. So people need to
be educated to accept change prior to any politician
risking his/her skin on significant change. In essence a
society gets the politicians it deserves. Only very
occasionally does a politician arise who is capable of
rising above the political process and really leading, of
having a vision which is true and the charisma and powers
of persuasion and oratory to implement the changes
necessary, despite short term pain. We need this person
now.
Climate Change Deniers
lack credibility.
On Site Home Black Water Treatment. Why is the
treatment of blackwater (water from toilets and kitchen
sinks) at home promoted as being desirable in areas that
have quite reasonable tertiary treatment systems provided
by the community through Government? I find it desirable
that communities continue to work together through their
Government to provide basic infrastructure such a good
quality tertiary sewerage treatment plant. While
privatisation has undermined this in many areas
(electricity being the prime example in Victoria) where a
public system that work well exists it should be
supported.
What is the environmental advantage (because that is what
I am primarily concerned about) in transferring from a
publicly owned system that works reliably to a multitude
of privately owned systems?
While I am sure that these on site systems would work
well initially what happens when the house is sold,
perhaps to somebody that is not as interested in keeping
the system operating. Imagine tens of thousands of these
systems in an urban setting. You could be sure that some
are going to go wrong, resulting in odour and possibly
health problems.
(There could be some justification for on site treatment
where good quality tertiary treatment is not provided by
Government (or even privately) or where water is extremely
scarce. Unsewered country properties should should look at
on site tertiary treatment - beyond the septic tank. I
also think that Governments should be looking at ways of
reusing the tertiary treated effluent rather than straight
discharge to the sea or to other waterways.)
On site home water systems should be limited to ensuring
efficient water use and the collection and use of rain
water (for showers, clothes washing and toilet flushing)
and the use of the cleanest part of grey water (say water
generated from clothes washing, showers and baths) for
garden watering during summer and toilet flushing. This
would ensure that most efficient use of the capital to
establish the system. Also the use of high pressure pumps
needs to be carefully considered in any design to minimise
pump energy use. Use low pressure (low head) pumps where
possible - which is most housing applications. (There is
no need to effectively raise the water to a pressure
equivalent to a 30 to 40 metre column of water to fill a
toilet cistern - this is just a waste of energy.)
Save the Planet
Page
Green Oversite Home
Page
|