carbonetix

Archive for the ‘carbon conservation’ Category

How we have kept our energy use 75% lower than a typical office of our size

Wednesday, January 7th, 2009

This week marks exactly one year since we first moved into our current office of 267 m2. Readings of our electricity meter show energy consumption was 30.2 kWh/m2 for the year. Thats all our energy use - we don’t have a gas connection - and includes heating and cooling of the office. To put this in context, this is lower than any of Australia’s famous green buildings. How have we achieved this?

CarbonetiX office

First, we operate the heating/cooling system manually, and only when needed. Most of the year its off. We get good ventilation through the building by opening the front and back doors. HVAC control

Second, we have delamped - that is removed one lamp from each double fluorescent light fitting, and fitted Mirrorlux reflectors behind the remaining fluoro tube. delamped fluorescent light fitting

Third, we have a good switch off culture. The printer goes off at night. Staff only switch lights on when needed. Computers are unplugged at night time.
printer signage

Fourth, we use laptops, which use less than half the power of desktop computers.
laptop

Fifth, we use occupancy sensors to control lighting. If a workspace is empty, the light goes off.

occupancy sensor

Sixth, our internal phone and internet network equipment goes off overnight, using a simple plug in timer. We use VoIP phones with power over network, power over network was chosen deliberately to enable this out of hours shut down.
timer on phone and internal network

Seventh, our servers go off automatically each night after the backup, and are turned on manually the next day.
servers switched on manually

Eighth, in the one office with windows the lights stay off most the time.
daylit office

Ninth- we use a kettle rather than a boiling hot water unit. The boiling hot water unit in the photo has been disconnected.
boiling hot water unit replaced with kettle

Tenth- we have removed the tubes in the outside light of our sign. We don’t operate at night, and there is no need to have it illuminated.
sign with power disconnected

In December last year we installed skylights. As they have only just been installed they wouldn’t have contributed much to our savings last year. But in 2009 they should help keep our energy consumption even lower.
skylight

There isn’t a lot of rocket science in what we have done. The biggest savings have come from how we operate the heating and cooling - and we haven’t spent a cent on control systems. Energy conservation is good for the environment, and has saved us money. Assuming the previous tenant used 130 kWh/m2/year (pretty typical for an office this size) last year we saved $4,000 and 35 tonnes of greenhouse gas.

Can LED lights replace fluorescents?

Wednesday, December 17th, 2008

LED lights are seen by many as the next big thing when it comes to lighting. But do they live up to their promise?

LED tube

LED tube

Over the last few months we have been researching and testing LED tubes. These tubes are the same shape as a fluorescent tube, and have hundreds of LEDs on them. To summarise our research results:

  • The performance of LED tubes has improved greatly over the last 12 months, particularly in terms of total light output.
  • Quality of manufacture is still of concern (one of the LED tubes in the photo has partially failed).
  • Many tubes now have a very good “daylight” light colour, although some of the ones we tested were quite blue.
  • We are not yet at the point where a LED tube can substitute a 36 watt tri-phosphor fluorescent, but if the technology continues to advance as it has the performance may match fluorescent tubes within the next three years, but with much lower power input.
  • Pricing is still high, but as lighting performance improves the range of applications where LEDs can be used will increase. This should lead to economies of scale and price reductions.

A door has been closed. We can’t rely on the government for carbon reduction. What doors can we now open?

Monday, December 15th, 2008

The government clearly has underestimated the urgency of the need to cut carbon emissions. Evidence of this comes in the announcement today from Prime Minister Kevin Rudd that Australia would commit to reduce its emissions by 2020 by just 5% compared with 2000 levels.

After years of waiting now we finally have total clarity that we cannot rely on our government to drive the kind of carbon reductions the science says we urgently need.

A door has been closed. And whilst its hard to remain up-beat, lets consider the alternatives that will result in Australia significantly reducing its emissions. Alternatives such as:

  • Voluntary action. My experience has been that individuals and companies who seriously try to reduce their carbon emissions can save much more than 5%, probably closer to 50%. It depends on their starting point and the type of industry they are in. But in general, if you have strong leadership commitment you can achieve big savings.
  • Sexy carbon friendly technologies that are so cost effective they are a “no brainer”. Solar panels for example are very sexy. But expensive. Engineering ingenuity could solve this.
  • The aggressive marketing of energy efficient technologies. Energy efficiency isn’t exciting, but it is cost effective. My business is energy efficiency. Any advice on making efficiency sexy and wildly popular would be welcome.

One of the most dangerous newspaper headlines you’ll ever see – “Climate change is a lose-lose affair”

Friday, December 12th, 2008

This blog exists because of my belief that a vigorous response to the climate change challenge provides a win-win situation, not a lose – lose. Yet Fairfax Digital’s Independent Weekly has just come out with this headline “Climate change is a lose-lose affair”.

This sort of headline is very dangerous because it promotes fearful thinking, and fearful thinking will not get us out of the economic crisis and neither will it solve climate change.

Let me give just one example of how a vigorous response to the climate change challenge provides a double win. From a manufacturing company which uses a LOT of energy. Supposedly a company that would be a big loser from climate change. But not just any manufacturing company, one of the world’s largest manufacturing companies. Big company. Uses a lot of energy. Surely acting on climate change is a bad thing for this company?

But no, in actual fact responding vigorously to the climate change challenge has yielded multiple WINS for this company.

Over the last three years its Australian manufacturing plant has reduced direct carbon emissions per widget manufactured by a staggering 30%. WIN = big savings on its energy bills.

One of its widgets is synonymous with “green,” is the most energy efficient on the market, and there is a waiting list to buy it. WIN = growth in market share.

Its environmental credentials attract some the best and brightest in the industry to work for it. WIN = people are the key success factor in any business.

The company of course is Toyota Motor Corporation, and the widgets referred to above are cars. Andreas Kammel, Environmental Policy Manager of Toyota in Australia recently said to me “there are strong business opportunities on the back of climate change, climate change does not have to be something that is difficult even for an energy intense manufacturer such as ourselves.”

The Toyota sustainability report can be found at http://toyota.republicast.com/sr2008/republicast.asp?page=1&layout=1&control=yes&zoom=100

Cars are a major source of greenhouse gas pollution, and I’m certainly not saying you should ditch your bicycle for a Prius. But I would not be surprised if Toyota is one of the first manufacturers to come out with a mass produced zero emissions vehicle. For Toyota, acting to reduce greenhouse gas emissions is good for the company and less harmful to the environment. It’s a WIN-WIN not a lose-lose.

We are in a time of economic crisis, and moving into a period of great environmental crisis. The last thing we need is the poverty of thought promoted by media with negative headlines.

The three pre-requisites for sustainable carbon conservation

Friday, December 12th, 2008

As I’ve observed organisations that are successful in reducing their carbon emissions in an on-going way I’ve noticed that they all have three things in place before they begin to significantly cut their carbon:

  1. Leadership commitment. More often that not the most senior level managers will be on the environmental steering committee.
  2. A system in place for accurately measuring and tracking their emissions. They measure what they treasure - in this case their carbon savings.
  3. Wider commitment in their workplace to emissions reduction.

With these three pre-requisites in place these organisations are more likely to move forward to actually cut their carbon pollution.