Ze-gen Inc. has announced the addition of David Robertson as vice president of technology. He joins Ze-gen after a 30-year career with BP plc. Robertson will be leading the technology development, project deployment and operations activities at Ze-gen as it advances commercialization of its gasification process. His most recent role was technology vice president, conversion in the refining and marketing company in BP. He was responsible for developing a portfolio of technologies to create synthesis gas from a range of primary fuels and creating a range of clean fuels and fuel-related products from syngas.