Google Inc. and Intel Corp. announced an effort to get computer makers and customers to adopt technologies that reduce energy consumption. The initiative sets annual targets for reducing power usage on personal computers and server systems. Other supporters include Microsoft Corp., Dell Inc., Hewlett-Packard Co., International Business Machines Corp., Advanced Micro Devices Inc., Sun Microsystems Inc., PG&E Corp., Electronic Data Systems Corp., the World Wildlife Fund and the Environmental Protection Agency. PCs waste about half the power they consume, while computers overall account for about 2% of world-wide energy usage, backers of the effort estimated. If computer users meet the targets, the amount of carbon dioxide emitted to supply power for computing uses could drop by 54 million tons a year and save more than $5.5 billion in annual energy costs. Participants in the program, dubbed the Climate Savers Computing Initiative, must commit to produce systems and components that me...