This is the strongest endorsement yet from the International Solar Energy Society (ISES) of the policy that has sparked renewable energy development in Europe.

The resolution also calls for the world to reach 100% renewable energy by mid-century.

At the ISES Solar World Congress (SWC) in Johannesburg, ISES also singled out the host country, South Africa, as an example for praise. South Africa has embarked on developing a full system of feed-in tariffs to help solve the country's electricity shortages and to send a signal to the nations meeting in Copenhagen that the developing world is willing to do its part.

The move by ISES, one of the world's oldest renewable energy organisations, follows recent announcements by China, India, Taiwan, and Japan that they will all soon introduce feed-in tariffs.

You can view the ISES SWC Congress 2009 resolution here