Staples has released information on its corporate responsibility inititiatives in its 2006 Staples Soul Report.

According to the report, in 2006, Staples doubled the purchase of clean renewable energy to 20 percent of U.S. electricity consumption and installed nine rooftop solar systems.

The company says it sells more than 2,900 different products with recycled content and is recycling nearly 18 million ink and toner cartridges from customers.

In May, Staples became the first national retailer to offer everyday-in-store recycling for computers and other office technology.

In January, the company unveiled a 433-kilowatt DC commercial solar photovoltaic system at its 300,000-square-foot retail distribution center in Killingly, Connecticut.