Washington, DC - September 21, 2005 - Scott McNealy, Chairman and Chief Executive Officer of Sun Microsystems Inc. (Nasdaq: SUNW), challenged other industry leaders to embrace sustainable growth strategies as they face both accelerating business efficiency and environmental pressures. McNealy outlined Sun's approach which is designed to help businesses manage their growth and performance needs both responsibly and cost-effectively.

McNealy made his comments as he joined other prominent corporate leaders today to launch the Business Roundtable's S.E.E. Change Initiative. The S.E.E. Change initiative encourages CEOs of the nation's leading companies to embrace business strategies and projects that measurably improve society, the environment and the economy.

The number of people online worldwide will grow by 35 percent, or 350 million people, in just two years. This growth means that the energy demands of operating those computer systems will also rise dramatically, creating a significant challenge for our supply of natural resources and environmental protection.

"With several million new people joining the global network each week, now more than ever it is critical that organizations more efficiently deal with the increasing demands placed on their technology infrastructure," said Scott McNealy, Chairman and CEO, Sun Microsystems. "As the global market expands, sustainable growth strategies can help companies dramatically cut costs on data center environmentals such as power and cooling, while still significantly increasing capabilities of the computers that power the network"

"Sun is addressing energy and resource efficiency, power consumption and waste management as we help businesses and our employees meet the challenges created by the evolving role of technology in our everyday lives," explained McNealy. "We are pleased to join the Business Roundtable's S.E.E. Change initiative and challenge other companies in Silicon Valley to invest in sustainable growth and computing initiatives that will ultimately allow everyone in the world to participate on the network."

Sun's sustainable growth initiatives include:

• Ongoing focus on sustainability at the product development level
  For the last three years Sun has been investing heavily in R&D that addresses sustainable computing, especially for the data center. Sun's recently launched Sun Fire x64 servers use about one-third the power, provide one-and-a-half times the performance, and cost half as much as comparably configured servers. Sun plans to introduce even greater advances , with the intent of revolutionizing the data center. By 2008, Sun's goal is to have introduced solutions that offer 30 times the performance while at the same time using one-tenth the energy and half the heat generated from what it offered just two years ago.


• Utilizing thin-client IT architecture across the enterprise
  Sun's "thin client" architecture lets employees use streamlined, low power computers that collectively connect to a robust, yet energy efficient, network. Without the need for personal computers for each employee, this model has reduced power consumption by nearly 9 times, and raw materials consumption by 150 times, while saving Sun $24 million in FY05 in energy and systems costs. Sun's goal is to bring the savings and benefits of a thin-client architecture to its customers.


• Maintaining a location-independent work program
  Sun promotes a flexible workforce and commute program, saving participating employees an average of two hours a week in commute time, easing air pollution and gas needs, and reducing Sun's real estate costs by $69 million in FY05. Currently, 14,000 employees participate in the program, and Sun's goal is to increase participation by another 5,000 employees by 2008.


• Implementing recycling/waste reduction programs
  Sun has proven "take back" and recycling programs, with 18 million pounds of computer equipment recycled in the last six years. Sun is committed to minimize products going to landfill, with a goal to send less than five-percent of waste to landfills globally through its "take-back" program and recycling efforts.*


• Accelerating greenhouse gas reductions
  Sun reiterates its commitment to reduce greenhouse gas emissions 20% by 2012 as part of the U.S. EPA's Climate Leaders program, and intends to accelerate meeting this goal by 2008.

*assumes recycling infrastructures are in place in the countries Sun does business

About Business Roundtable

Business Roundtable is an association of chief executive officers of leading corporations with a combined workforce of more than 10 million employees and $4 trillion in annual revenues.

About Sun Microsystems, Inc.

A singular vision -- "The Network Is The Computer" -- guides Sun in the development of technologies that power the world's most important markets. Sun's philosophy of sharing innovation and building communities is at the forefront of the next wave of computing: the Participation Age. Sun can be found in more than 100 countries and on the Web at http://sun.com.

Sun, Sun Microsystems, the Sun logo, Sun Fire, Java, StarOffice, Solaris, and The Network Is The Computer are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries.