Professor Hass's interests are corporate and capital-market finance, business strategy, and the economics of energy and regulation. His publications have dealt with transfer pricing, capital budgeting, the pricing of natural gas and electricity, financing the energy industry, natural-resource allocation, and merger and acquisition decisions. He was chief of the division of economic studies at the Federal Power Commission in 1976-77, and has been a consultant to the Executive Office of the President of the United States, the Department of Energy, the state of Alaska, the New York State Public Service Commission, the Environmental Protection Agency, and numerous corporations. He has taught courses in Australia, Austria, Belgium, China, Ukraine, Russia, Slovakia and Turkey. He is a special consultant for National Economic Research Associates, a faculty member at the Graduate School of Business Administration, Zurich, and a member of the Board of Directors of Selected Funds, a family of mutual funds.