Covanta Holding Corporation is a holding company with subsidiaries that offer waste-to-energy conversion and specialty insurance. Through Covanta Energy Corporation, the company is engaged in waste disposal and energy operations. Its waste-to-energy facilities convert solid waste into renewable energy for communities in the United States. Covanta also maintains infrastructure components, such as transfer stations. The company s National American Insurance Company of California unit specializes in automobile insurance for non-standard and commercial applications. It distributes insurance products through a network of independent agents. NAICC conducts business in Arizona, California, Idaho, Nevada, Oregon, Utah and Washington. Covanta Holding Corporation is headquartered in Fairfield, N.J.