The National Union of Mineworkers (NUM) has expressed its frustration at not having been invited to participate in a two-day energy summit held in eMalahleni, Mpumalanga, earlier this week. The union says the Mpumalanga government had undermined it as a key stakeholder in the just energy transition. The summit was led by Premier Refilwe Mtshweni-Tshipane and attended by various provincial and national stakeholders including representatives from the Congress of the South African Trade Unions and power utility Eskom.