Non-governmental organisation Earthlife Africa said that it is suspicious of recently-appointed energy minister, David Mahlobo, accusing him of being a conduit for those with a pro-nuclear agenda.
"We don’t trust the new energy minister because he is being pushed by those who have a nuclear agenda," the group's Thabo Sibeko said.
Earthlife Africa marched to the state-owned enterprise's Braamfontein office on Sunday, protesting against proposed plans to implement nuclear energy in the country.
The group said that it was against the proposal as nuclear energy was not only dangerous but also expensive.
The group were also responding to growing reports that President Jacob Zuma appointed Mahlobo to the post in order to fast track the nuclear plan.
Mahlobo has denied the reports, but he is believed to have put a rush on finalising the nuclear energy plan. His predecessor, Mmamoloko Kubayi-Ngubane, initially said that the plan would be finalised by February 2018, but Mahlobo reportedly wants it done by next week.
Additionally, Finance Minister Malusi Gigaba has had to deny reports that he approached the World Bank for financial assistance for Eskom to roll out a nuclear programme.
Eskom, however, responded to Earthlife's concerns, saying that it is not in a position to comment on any nuclear plans as it is merely an implementing agency and not a policymaker.