the commercial arrangements also included electricidade de moçambique (edm) which took supply from cahora bassa through a wheeling arrangement with eskom. effectively, eskom supplied southern mozambique (maputo) from the then eastern transvaal at 132 kv with the sales deducted from the hcb supply to eskom. the tripartite agreement was suspended due to force majeure when the line from cahora bassa was unavailable in the 1980s.