The U.S. Environmental Protection Agency said today toxic releases into the environment increased 1 percent in Hawaii during 2007 from the year before.

The EPA identified Hawaiian Electric Co.'s Kahe Generating Station as the biggest source of the state's toxic chemicals.The plant released more than 820,000 pounds.

The U.S. Navy's Pearl Harbor was the next biggest emitter. It released more than 373,000 pounds.

The EPA says electric power generating facilities accounted for 67 percent of toxic chemical releases in Hawaii.

They also were responsible for 83 percent of toxic releases into the air.

The data cover toxic chemicals discharged into the air, water, land and underground, and the amount transferred offsite for disposal.