TOKYO, Oct. 25 (Kyodo) — Polish Deputy Prime Minister Janusz Piechocinski said Friday his country hopes to increase its fuel efficiency and diversify its energy sources with the help of Japanese technology.

In an interview with Kyodo News in Tokyo, Piechocinski said Japan has "the highest quality of technology in the world," which Poland is using to build fuel efficient coal-fired power plants and to develop "clean coal" technology.

Poland relies on coal for roughly 90 percent of its energy.

On Poland's stalled plans to build its first nuclear power plant, Piechocinski, who doubles as economy minister, said surveys are underway to choose a plant site.

He also said his ministry hopes 8 to 9 percent of Poland's energy to be nuclear by 2025 to lessen its dependence on coal.

Japan looks to export its nuclear plant technology and is eyeing Poland as a potential buyer.

The deputy premier arrived in Tokyo on Thursday for a four-day visit to Japan.