the cahora-bassa transmission project was a joint venture of the two electrical utilities, electricity supply commission (escom, as it was known prior to 1987), latterly eskom, johannesburg, south africa and hidroelectrica de cahora bassa (hcb), a firm owned 15% by the government of portugal and 85% by mozambique. equipment was constructed and supplied by zamco, which was a consortium of aeg-telefunken jv, brown boveri company, and siemens ag of germany. brown boveri subsequently became part of abb and aeg subsequently became part of alstom.