IT departments need to be more flexible and increase their efforts to become environmentally friendly, according to the Carbon Trust.
IT is responsible for 2% of global emissions - as much as the airline industry - but many businesses are not putting the effort in to lower this, said Hugh Jones, project manager at the Carbon Trust.
The biggest problem continues to be companies not factoring in carbon emissions when making decisions on technology and equipment.
The Carbon Trust is a private company set up by the government in response to the increasing threat of climate change. It works with business and public sector organisations to reduce their carbon footprint.
Hugh Jones, project manager at the Trust, said businesses tend to be less flexible when it comes to making "business critical applications" more environmentally friendly.
"The important part of making IT more efficient is the design process. But this is one of the hardest things to influence, partly because a lot of it is not designed in the UK.
"A company's level of flexibility depends on where in the business a particular IT system is being used. There are many critical applications where it is probably not practical to make drastic changes. In these cases there is probably very little a company will do."
But he said the extent of the problem of global warming means more co-operation in the planning stages is needed. "We want designers to factor in the full life-time footprint of equipment, and efforts should be made to try to reduce this in future designs.
"And the business needs to factor in the carbon footprint as part of the decision-making process. For example, if the footprint of a new server is significant, the business should really think about it. The environment must be factored in at the planning stage."