As nations wrangle in Paris this week over reducing their carbon dioxide emissions, companies have been eager to show that they, too, are getting with the program.

Now, from Google, long a leader among corporations in green energy investing, comes new agreements to buy renewable energy to power its operations that, taken together, nearly double what it had already promised.

“We’re really trying to lead this transition to a cleaner energy economy,” said Michael Terrell, principal for energy and infrastructure at Google, whose aim is to use 100 percent renewable energy. “It’s transforming anyone who touches the energy space. It’s not just about data centers or tech companies.”

The Google announcement follows a flurry of similar, though smaller, corporate purchases of renewable energy this year by companies including Hewlett-Packard, Kaiser Permanente, Dow Chemical and Amazon Web Services. Bloomberg has agreed to buy more than 25 percent of the energy generated by a wind farm in Chautauqua County to offset the energy use of its New York offices. More recently, Unilever promised to eliminate coal from its energy mix within five years