Gartner has advised data centre managers that they should be aware of the savings they could make by cutting down on energy use.
Rakesh Kumar, research vice-president at the company, claimed that the cost of energy is one of the fastest-growing expenses in the data centre portfolio.
According to Gartner, firms can save money in this area by rationalising hardware in an office, consolidating multiple data centre sites and ensuring that the costs of using facilities and hiring people is as efficient as possible.
Mr Kumar commented that managers of data centres are currently not paying enough attention to the use of energy in their offices.
He explained: "They need to realise that removing a single x86 server from a data centre will result in savings of more than $400 (£240) a year in energy costs alone."
This week, Gartner announced that worldwide PC shipments are set to increase by 2.8 per cent in 2009, reaching a total of 298.9 million units.