South Korea’s embrace of nuclear energy has been thrown into doubt as President Yoon Suk Yeol’s impeachment case raises the possibility of the opposition coming to power and overhauling the nation’s broader energy strategy.

With Yoon suspended from office because of a botched attempt to impose martial law, his push to build more reactors at home and ramp up exports of Seoul’s nuclear technology is at risk of stalling, alongside a flagship oil and gas discovery. Stocks related to the nuclear sector and the drilling project have already suffered losses due to souring investor sentiment since the political crisis began.

Asia’s fourth-largest economy has pledged to curb emissions by 40% from 2018 levels by 2030 and, while Yoon has come out in support of nuclear, successive governments have been criticized for dragging their feet on adding more renewables like solar and wind. The country is due to update its climate targets by early next year, but the political upheaval has now complicated that.