In draft proposals, the government said it would introduce extra levies on CO2 emissions for different sectors to push companies to clean up their acts.
Away from the seminars and cocktail parties, metal producers, traders and users will meet behind closed doors to hammer out details of next year's contracts.
President Ramaphosa announced a wide-ranging set of deals between government, big business and labour that he said would create 275,000 more jobs a year.
Hydro plans to halt production and lay off 4,700 people at Alunorte, which has been operating at half capacity since March due to an environmental dispute.
Quarterly deal volume was up 91% to $75.7 billion from $39.6 billion in the same period last year, bucking a global trend of declines in Europe and Asia.
