Carbon Conservation & Energy Efficiency


Bruce Rowse & Team

Archive for February, 2011

The TV stations don’t. Fairfax doesn’t. News Corp doesn’t. The NY Times Does

Friday, February 18th, 2011

Across Australia power bills are going up and the climate is clearly changing. So you would think that our mainstream media would be  bringing us good news stories about how we can cut our power bills and reduce carbon emissions, with a fast payback on investment.

But no. The focus is doom and gloom.The reporting I see is about how reducing carbon emissions is expensive, about how programs to reduce carbon emissions push up prices.

Have you ever picked up The Australian, The Age, The Sydney Morning Herald, The Courier Mail, the Australian Financial Review or any of our major papers and seen a good news story about how much money someone has saved from energy efficiency? I haven’t.

Have you ever seen a TV program that shows how different businesses are saving money and reducing carbon emissions through energy efficiency? I haven’t (but I admit I hardly ever watch TV).

Want a bit of cheer from your mainstream media. Sorry, you have to go to other side of the world.  Such as to the NY Times.

Why aren’t we seeing a lot of article like this in Australia? Believe me, there are lots of good news stories from energy efficiency if you want to look. Check out the good news interviews on our website for some of them.

Warning: Australia’s Greenhouse Emissions are on the rise!

Wednesday, February 16th, 2011

It has been a turbulent time during the last few weeks regarding the climate change issue. There have been a number of natural disasters all around Australia all linked to weather pattern changes. Although, some may argue that these would have happened anyway –saying that these have nothing to do with global warming- it is unlikely. There has been an increase of floods all around the world in the last few years as well as extreme temperatures resulting in bush fires or heavy snow falls in countries where they don’t normally have these. And the list goes on. But I won’t go on about this as it is a huge issue in itself, just look at Bruce’s previous blog with the weather map of Australia; it sums it up succinctly.

What is a concern is that the first reaction of the Australian federal government is to cut back on the environment budget in order to rebuild flood-affected areas. Fair enough some of those policies were real duds anyway but weren’t some of these catastrophes caused by the fact that we have been putting too much carbon dioxide in the atmosphere? So it would make more sense to try to reduce these to minimise the occurrence of more natural disasters. However, this is not the case. According to an article in The Age ( quoting Ross Garnaut the way we are going at the moment Australia’s greenhouse emissions will increase by 24% by 2020 (based on 2000 levels). Hang on; weren’t we supposed to reduce our emissions by an incredible 5% by then? Oh, yes but we still haven’t got any decent policies in place such as a carbon tax after years of debating it. Instead the current and the previous federal governments have spent around $5.5 billion on mediocre and piece meal abatement programs some of which were very poorly-managed indeed.

Overall all these approaches will not make hell of a lot of difference to Australia’s greenhouse emissions and we paid a very high price for the minuscule CO2 that we did manage to curtail, which is estimated to be about one-tenth of that famous 5% target. See: On a state government level (referring to our home state Victoria) the recently-elected government doesn’t seem to have much to say about Climate Change –so far. They are not too concerned to the extent that some of them don’t even believe in it and suggest the commissioning of more brown coal power stations to keep up with the ever increasing electricity demand.

The only ones that are actually rolling their sleeves up and are really doing something about reducing greenhouse emissions are our local governments with the support of their constituents. There are many passionate people in these organisations that are constantly doing the right thing. In many cases they are ignoring the financial cost of implementing strategies in order to improve their environmental impact. Those higher up should learn from them.

It is paramount that we as a country start doing something about Climate Change. The longer we wait the more it will cost the economy to retool and the longer we wait the worse it will get when it comes to natural disasters.

Weather map of Australia

Wednesday, February 9th, 2011

According to many commentators the recent weather in Australia cannot be linked to climate change.

So check out this weather map… (caution, contains strong language)

Energy efficiency – if you “get it” tell someone!

Tuesday, February 8th, 2011

Today’s Financial Review front page news was about the desperate need for more power stations in Australia. The article stated that according to the Australian Energy Market Operator electricity consumption is increasing at 2.5% per year, and we need between 700 and 900 MWh of extra generating capacity per year. And that to cope with increased demand and a carbon price, Australian power generators will have to invest up to $120 billion in new electricity assets over the next 20 years.

These comments, and the failure of the article to mention energy efficiency, clearly show that by and large most people just don’t “get” energy efficiency. Because if as a society we really got energy efficiency, we wouldn’t need any new power stations.

So if you “get” energy efficiency, tell someone. Let me give you some examples of what energy efficiency means:

  • A local government client has cut electricity consumption in its office complex by 32% (2010 vs 2006). The office complex contains three major buildings, two of which are over one hundred years old and subject to heritage constraints.
  • Local government electricity consumption

    Local government electricity consumption

  • One of our earliest clients, Westernport Secondary college, used 31% less electricity in 2010 than it did in 2004. Roughly same number of students. Maximum peak demand at the college has also dropped, by39%.
  • WPSC electricity consumption

    WPSC electricity consumption

  • The all-electric CarbonetiX office uses 35 kWh/m2/year – that’s everything – light, power, heating, cooling. Most comparable offices would use over 100 kWh/m2/year. We are certainly using much less than the previous tenant.

All these examples show what energy efficiency can do to reduce the demand for energy – and cut carbon emissions -whether a building be old or new, owned or leased. And the energy efficiency measures implemented at the local government office,  Westernport Secondary College and the CarbonetiX office haven’t been particularly complex or used leading edge technology. In fact some of the savings come not from technology, but from choice. Choosing to switch off, to only switch on when necessary, choosing to change the air conditioner temperature settings, choosing to be conscious of energy usage.

WPSC electricity demand

WPSC electricity demand - by time of day.

WPSC - maximum electrical demand by month

WPSC - maximum electrical demand by month

The example of Westernport Secondary College is particularly interesting. If every household and organisation that uses electricity could do what Westernport Secondary College has done we would need about 39% fewer power stations, not more.

I’m not the only one who “gets” it. New Scientist has recently reported on a study by Cambridge University which found that energy efficiency could cut world energy usage by over 70%.

Energy efficiency has multiple benefits:

  • It reduces carbon emissions
  • It saves money for the energy consumer
  • It reduces peak demand
  • It reduces upward pressure on electricity prices

So, if you “get” energy efficiency tell someone!

Sea level rise creeps up… very slowly… at first

Wednesday, February 2nd, 2011

As with many people climate change science has been on my mind with the devastation of the floods and now hurricane Yasi in Queensland.

Sea level rise is one of the likely impacts of climate change, driven by a melting of the Greenland Ice cap. The melting of the Greenland Ice cap will lead to a sea level rise of around 7 metres. I was a bit sceptical about this number when I learnt of it. How could the ice melt from such a seemingly insignificant place on the world (after all, who do you know who has been to Greenland?) cause such a high sea level rise? So I did some quick investigation, found out that most of the Greenland ice shelf was over one km thick, and a rough calc showed that this estimate of sea level rise was about right. But how long would this take? Surely it would be over hundreds or thousands of years?

If you have ever seen a presentation by David Suzuki or can remember your high school science, or understand compound interest, you should appreciate the concept of exponential growth. For example, which would you prefer – $1 million or 1 cent that doubles every day for the next thirty days? If you opted for the 1 cent that doubles after 20 days you’d only have a little over $5,000, but after 30 days you would have over $5 million. With exponential growth nothing much seems to be happening, then suddenly things seem to change very quickly.

The Climate Code Red blog has recently reported on research by NASA scientist James Hansen that indicates that the rate of mass loss from the Greenland ice shelf is doubling roughly every 5 to 6 years. Hansen is quick to point out that the data records are too short to be sure of the doubling time. But if the rate of mass loss does double every 6 years, after 60 years the rate of mass loss will be over 500 times what it is today. And this exponential growth in the rate of loss of ice is what Hansen has predicted could translate into a 5 metre sea level rise by 2095.

Over the last century the sea level rose by somewhere between 150 to 200mm (according to the USA’s environment protection authority). Lets assume that that the sea level rose by say 2mm in 2010, in line with the average yearly rise in the century before. If we take the crude approximation that sea level rise also takes place exponentially, and we are looking at a sea level rise of 5 metres by 2095, by how much will the sea have risen between 2010 and 2020? By just 30mm – surely nothing to make the alarm bells ring or make coastal property values plummet. By 2030 the rise will be 80mm – mmm. By 2050 the rise would be 330mm. Probably still not enough for some sceptics to acknowledge climate change. In fact it would only be until 2068 that sea levels were a metre above 2010 levels.

Now I’m not a climate change scientist and the numbers above have been generated from some very rough calculations that wouldn’t stand up to peer review. But my point is that sea level rise – seen as one of the great threats of climate change – will probably creep up on us. Just because its happening slowly now doesn’t mean sea level rise will always be slow.