Rising input costs and energy insecurity have made coal increasingly less competitive for electricity generation, a study reveals.

Students could win R14 million in prizes by participating in the regional leg of the Eskom science fair.

The JSE-listed group concludes disposal of Powertech Transformers, saying customers, especially Eskom, will continue to receive high quality services.

Rather than supporting "dirty coal", the loan should have been used to advance renewable energy, the environmental group says.

The utility posts a loss of R2.3 billion, with R20 billion in irregular expenditure, for the financial year ended 31 March.

The power utility and KfW, the German Development Bank, sign a $100 million loan facility to facilitate the grid integration of renewable energy.

Two planned coal plants are set to cost the country an additional R19.68 billion in present value terms over their lifetimes.

On Saturday night, South Africans joined the rest of the world when they switched off their lights for Earth Hour.

The imminent closures of Eskom's old coal-fired power stations are inevitable and unrelated to the renewable energy programme.

Trade union Numsa and civic group Transform RSA granted urgent court interdict to stop the signing of the power deals.

The power utility commits to undertaking its own investigation following SAP's admission of misconduct in Gupta deals.

Following a protracted period of uncertainty, energy minister Jeff Radebe says outstanding projects will be signed on Tuesday.