Several European nations, including Germany, Italy, Finland and Switzerland, have already signalled a more cautious approach to nuclear energy since Japan's earthquake and tsunami led to a nuclear reactor crisis.
Tusk had proposed to press ahead with plans to build Poland's first two nuclear reactors, which are due to produce 3GW (GigaWatts) of power each, despite the disaster in Japan.
The first power plant was intended to come online in 2020.
But asked to comment on a call by Poland's opposition leftists for a ballot on the nuclear issue, Tusk said: "I would not rule out such a decision in the future."
"Though a decision about the future of the nuclear programme at the level of parliament would be enough, these kinds of undertakings have no sense without social acceptance," Tusk stated at a news conference.
"Everything tells me that Poland's approval for modern and safe nuclear installations is very high [...] We cannot be hysterical. The radiation threat in Japan is not due to failure in the nuclear plant, but to a massive earthquake and tsunami."
Tusk has previously asserted that the risks of a nuclear disaster in Poland are much smaller because, unlike Japan, it does not lie in a seismically active region.
The country's nuclear plans attracted the ire of German officials in the states of Brandenburg and Berlin, however, who called on Poland to cancel them.
More than 90% of Poland's energy currently comes from polluting coal, which hampers its drive to reduce carbon emissions. It also wants to reduce its reliance on natural gas imports from Russia.
Westinghouse, a US-based unit of Japan's Toshiba, Areva, EDF and GE Hitachi Nuclear Energy are competing to provide technology for the Polish nuclear project.
Opinion polls on public support for nuclear power are inconclusive.
One online survey of nearly 13,000 people conducted by the Money.pl portal on 23 March found that 65% supported building nuclear plants in Poland, while 30% were opposed.
But a survey by SMG/KRC conducted immediately after the first Fukushima explosion found the country much more divided, with 47% supporting the government's nuclear plans and 46% against.
(EurActiv with Reuters.)