IRNA news agency quotes Ivanov as saying that "Russia is determined" to finish the Bushehr plant on time.
He spoke after talks with Iranian Foreign Minister Manuchehr Mottaki.
Russia supports Iran's right to peaceful nuclear technology but voted for a UN Security Council resolution in December that imposes sanctions on Tehran over its refusal to freeze uranium enrichment.
Nuclear Power's Resurgence
Nuclear-fuel pellets being produced in Kazakhstan (TASS)
LOOKING FOR ALTERNATIVES. Despite warnings from scientists, the world seems unable to stem its insatiable appetite for fossil fuels, which are producing the greenhouse gases blamed for global warming. And emissions are set to rise dramatically in the next few years. Is it time for the environmental movement to drop its opposition to nuclear power? (more)