PASADENA, Calif.–(BUSINESS WIRE)–Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services, announced today that the U.S. Agency for International Development (USAID) awarded the Company a 5-year, $12 million, single-award contract to improve Kosovo’s energy sector by strengthening the capacity of local institutions to advance energy market development and regional integration, and facilitate private sector investments in sustainable energy generation