Robert S. Silberman has joined California Energy Co. Inc., the largest independent geothermal power producer in the world, as senior v.p. of project development and implementation.NUI Corp. has appointed James R. Van Horn general counsel and corporate secretary. Van Horn was previously senior v.p., general counsel, and secretary at Citizens First Bancorp. Inc.
The interim board of directors of WorldTel has elected Sam Pitroda chairman.