AltX-listed alternative and renewable energy business Renergen has, ahead of its planned listing on the ASX in May, announced a further increase in reserves at its subsidiary Tetra4’s Virginia project, in South Africa’s Free State province. The company, which on Wednesday published its prospectus for a secondary listing on the ASX, also reported that an independent reserve review by US-based firm MHA Petroleum Consultants has confirmed a 12.2% increase in proven methane reserves to 40.76-billion cubic feet, while proven helium reserves have increased by 16.1% to 1.01-billion cubic feet.