"We will do the nuclear project at a scale and pace that we can afford. So we will look at that completely, if we need to review the scale we have obviously to go back," Kubayi told a news conference.
In response to a question on the firm that South Africa could choose to build new nuclear reactors, Kubayi said it was important to go for "the most experienced people who have a track record".
Russian state firm Rosatom is a contender to build the nuclear reactors and has been talking up its chances of winning the contract, given delays and cost overruns at French competitor Areva and Japanese-owned Westinghouse .
Kubayi met Russian Energy Minister Alexander Novak and Rosatom head Alexei Likhachev on her visit to Russia, agreeing with Likhachev that South African and Russian technical teams would initiate discussions on cooperation.
She said it was too early to give an exact date on when the procurement process for the nuclear project could restart and that South Africa was reviewing intergovernmental agreements with many countries following the High Court ruling against the Russian nuclear pact.
She said: "In a few weeks we should be able to give an indication (of the procurement restart date), once the internal cabinet processes have been concluded."