new delhi, Oct. 12 -- State-run NTPC Ltd is in talks with South Africa's Eskom for a collaboration in green energy, with the two sides working on the modalities of a possible partnership, including a joint venture (JV). The partnership could deepen NTPC's presence in Africa's largest power market, South Africa's high commissioner to India Anil Sooklal said, while helping the coal-dependent nation expand clean energy generation and keep its ageing thermal plants running through the supply of components. NTPC and Eskom are the largest power producers in their respective countries. State-owned Eskom contributes 90% to South Africa's overall power generation, Sooklal said in an interview. "We're only now going out into public-private partnershi...