 In 1999, CDS was bought out by Syntegra, a subsidiary of the BT Group, and merged into BT's Global Services organization.CDC's Energy Management Division was one of its most successful business units, providing control systems solutions that managed as much as 25% of all electricity on the planet.In 1988 or 1989, this division was renamed Empros and was later sold to Siemens as CDC broke apart..