A view of Bushehr Power Plant in southern Iran. Press TV
Russia partially constructed the plant, and its technicians help operate it.
Amid the ongoing US-Israeli attacks, a projectile landed within the plant's compound late Tuesday but caused no damage, Iran's atomic energy organisation said.
"Today, at approximately 7:20 Moscow time (0420 GMT), 163 people left Bushehr for the Iranian-Armenian border," Rosatom CEO Alexey Likhachev was quoted as saying by the state RIA news agency.
"Right now, about 300 remain... Some people will stay. I think it will be a few dozen people who will oversee the equipment," he added in comments to reporters, including AFP.
Rosatom had already withdrawn 150 people working at the plant, amid the threat of US and Israeli airstrikes.
It was in the process of building two new reactors at the plant when the conflict began.
The UN's nuclear watchdog issued a statement on Tuesday calling for "maximum restraint to avoid nuclear safety risks".
Last week, the United States and Israel struck Iran's Natanz nuclear facility, Iran’s main uranium enrichment site, nearly 220 kilometres (135 miles) southeast of Tehran, the Atomic Energy Organization of Iran (AEOI) said.
The organization condemned the strike as a violation of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) and nuclear safety regulations.
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