The global economic recession has turned the once-boring and un-sexy concept of energy efficiency into a top-of-mind issue as companies look at their IT departments for opportunities to save money.

When those in a recent IDC survey consider green IT, 68 percent of them think of energy efficiency first, according to IDC. Despite the fact that 51 percent said their organization pursues green initiatives because of the potential cost savings, nearly 80 percent admit they have no set budget in place for green IT or sustainability initiatives.

Luckily, some green IT tools and techniques require little upfront investment or have fast payback periods, which recent research suggests is vital to any major capital investment. For example, installing or activating power management controls in personal computers can yield $40 in annual savings per unit, which represents a prime savings opportunity.

“In difficult economic times, business are faced with rising energy costs and forced to squeeze the most amount of compute power out of valuable data center real estate in the most efficient manner possible,” Vernon Turner, IDC’s senior vice president of Enterprise Infrastructure, said in a statement.

The survey, conducted at IDC’s Green IT Forum, also found that 85 percent believe green IT will play a medium to large role in reducing corporate environmental impacts. Several studies have found that various IT technologies, such as teleconferencing or telecommuting have the ability reduce greenhouse gas emissions dramatically if widely deployed.

Nearly two-thirds of those in the IDC survey have some sort of IT hardware recycling program in place. When retiring IT assets, it is security, however, tops their list of concerns.

"Data center" -- CC licensed by Flickr user habi.