Diamond producer Petra Diamonds has entered into long-term power purchase agreements (PPAs) for the procurement of wheeled renewable energy for its Cullinan and Finsch diamond mines from licenced South African energy trader Etana Energy. Etana provides cost-competitive clean energy from new large-scale renewable energy projects, mostly wind-based, through wheeling over the existing South African grid. The company has a portfolio of multiple ready-to-build and grid-secured wind and solar projects that are expected to come online over the course of 2025 and 2026.