Sustainablebusiness.com reports that PepsiCo. is purchasing renewable energy certificates (RECs) to offset its electricity use in the U.S. PepsiCo. will be buying 1.1 billion killowat-hours, which is the equivalent of its annual usage.

PepsiCo now leads the following lists:

The Top 25 list, which recognizes the nation’s largest purchasers of green power. EPA partners are buying more than 8.9 billion kilowatt-hours kWh of green power annually, an increase of nearly 425% since the end of 2004.

EPA’s Fortune 500 Challenge, launched in late 2006, focuses on the collective green power purchases of eligible Fortune 500 companies with a goal of a combined total of more than five billion kWh of green power by the end of 2007. Johnson & Johnson, Nike and Applied Materials also moved up in the challenge as a result of increased purchases, and Baxter Health Care corporate headquarters found its first ranking in the challenge.

The new “100 Percent Green Power Purchaser” list, which features organizations that are buying enough green power to meet 100 percent of their organization-wide purchased electricity use. This list includes more than 300 partner organizations demonstrating environmental leadership — from the largest corporations and government entities, down to some of the smallest organizations and businesses in the United States.