Renewable energy developers are cautiously optimistic about the announcements made by the South African government that Bid Window 5 of the Renewable Energy Independent Power Producer Procurement Programme (REIPPPP) is going ahead, but the documents specifying requirements are still not available, says energy, mining, public and private consultancy Economic Development Solutions (EDS) MD Janine Espin. The Department of Mineral Resources and Energy last week said it would hold a virtual bidders conference in April to share the relevant information and qualifying criteria with those interested in participating in Bid Window 5.