Filling out its portfolio of Smarter Buildings offerings, IBM is acquiring Tririga, a provider of facility and real estate management software, IBM announced Tuesday. Terms of the deal were not disclosed.

IBM estimates that organizations spend about 30 percent of their annual budgets on facilities. It is the second largest expence for organisations, after personnel. IBM feels that it can help organisations reduce the cost of ownership and maintenance of their facilities, by analysing energy usage and equipment efficiency. IBM expects to reap $10 billion in annual revenue in this field by 2015.

The Tririga software will be included into IBM's Smarter Buildings-branded software, which includes such products as IBM Maximo Asset Management. The company hopes that integration across its facilities management products will offer customers greater insights into their facilities.

"Having one view of building operations worldwide will be a powerful tool to help organisations control and optimise" their facilities, said Florence Hudson, an IBM energy and environment executive, in a statement.

Based in Las Vegas, the privately held Tririga has more than 200 enterprise customers, including a third of the Fortune 100 corporations and seven US government agencies, IBM said.

Tririga has a number of different software programs to manage facilities. Real Estate Portfolio Management keeps track of current building use and can be used to make projections about future requirements. Capital Project Management logs the conditions of current buildings and offers a way to estimate future repair work. The company also offers tools for monitoring utility costs and consumption.

Tririga, which employs about 200 people, will be folded into IBM Tivoli Software and IBM Global Business Services. IBM hopes to complete the transaction by the middle of 2011, pending the completion of the usual closing conditions.