In keeping with the trend of eco-friendliness, Sun Microsystems launched its green data centers Tuesday, saying they’ll cut the hardware and software maker’s utility bill by 60 percent.

Sun has deployed the data centers in three locations: Bangalore, India; Blackwater, England; and its campus in Santa Clara, California. The three data centers, which run Sun’s IT operations, were put in place between January and June.

The news comes a few days after the U.S. Environmental Protection Agency issued a report saying that data centers in the United States have the potential to save $4 billion in annual electricity costs through more energy-efficient systems.

Data centers contain servers and computer systems that run an organization’s IT. They consume a lot of energy running the servers as well as the air-conditioning needed to cool those servers.

During the past year, Sun has completely rebuilt its data centers with a new architecture that saves costs on power and cooling, said Stephen Novak, senior manager of eco services at Sun. Through the new design, Sun has also reduced use of real estate, Mr. Novak said.

For example, the company has gone from 267,000 square feet of data center space worldwide to about 133,000 square feet, according to a company statement. At the Santa Clara campus, Sun has consolidated 2,177 servers to 1,240 and is garnering $1.1 million in savings per year on the energy bill, the statement said.

The company said it also wants to bring such benefits to its customers. Through its Eco Innovation initiative, also announced Tuesday, Sun is rolling out services designed to help customers analyze how efficient their data centers are, make their hardware infrastructure consume less energy, and add virtualization to their systems. Virtualization lets multiple software-isolated applications run on a single system and lets companies consolidate applications onto fewer servers.

“It’s been in Sun’s DNA for a while,” Mr. Novak said. “It’s the belief of the organization that we need to do this not only for the customers’ benefit but the benefit of the planet.”

The EPA report also said data centers account for about 1.5 percent of electricity consumption in the United States and that energy consumption by servers and data centers in the states has doubled in the past five years and is expected to almost double again in the next five years, costing $7.4 billion annually.