Exiting Amplats CEO says will ensure stability and continuity (Recasts with comment from CEO) By Nelson Banya Feb 20 (Reuters) - South Africa's electricity crisis and the impact of Russia's invasion of Ukraine will reduce the global supply of platinum group metals (PGM) in 2023, Anglo American Platinum (Amplats) chief executive officer said on Monday. South Africa, the world's top PGM producer, is experiencing extended electricity cuts due to frequent breakdowns of its coal-fired generating plants, a situation that could result in Amplats's refined PGM output falling 5% in 2023, said Amplats CEO Natascha Viljoen. Russia, the world's number two PGM producer, is struggling to maintain output due to problems accessing spares, despite having avoided sanctions on its metal sales, she said.