Japan should reduce energy consumption and establish an environmentally sustainable society, according to a Danish energy conservation expert.

Jorgen Stig Norgard, a professor at the Technical University of Denmark, said his country has managed to maintain energy consumption at the same level as that of 30 years ago by adopting a drastic energy-saving policy, but energy consumption in Japan has meanwhile been growing over the past decades.

"I think Japan has the technological capability to make efficient products (to save energy)," Norgard said in an interview with The Japan Times during a recent visit to Tokyo.