Reducing your Carbon Dioxide emissions (and clearly communicating this to all stakeholders) will not only directly benefit the environment, but it provides some very positive, tangible business benefits as well, these include:

Lower costs
Retail electricity prices increased by over 200% in the first half of 2007, and there appears to have been a permanent and significant increase in the cost of electricity. By using electricity more efficiently, your organisation will be protected from some of these price increases. 
As it seems inevitable that some form of carbon cap will be introduced soon in Australia, by using less electricity and/or buying a portion of your electricity in the form of non carbon producing renewable energy, you will be better equipped to operate within a carbon constrained economy

Positive company image
Having an active Carbon Dioxide reduction strategy in place and publicizing this will give you an advantage over your competitors. Surveys show that both the public and business are more likely to purchase products from companies with strong environmental credentials and are willing to pay a premium for products perceived as more environmentally sustainability.  

Improved staff retention and morale
Studies have shown that an organisation that takes its environmental responsibilities seriously and can demonstrate it is not purely focussed on profits is more likely to attract and retain the best staff.

Improved share price
Having a strong Carbon Dioxide reduction strategy in place is likely to be viewed positively by investors as it provides evidence that a company has a forward thinking management team. It may also lead to investment from the increasing number of ethical investment funds operating today.