Since the energy crisis of 2000 and the multinational consensus on the greenhouse gas reduction and cap-and-trade emission trading, building a zero carbon economy has been the focus of leading nations of the world particularly the G20 member countries.

In comparison to current cities, a zero carbon city uses a cyclic metabolism system where its wastes are recycled into energy sources continuously powering the city in an environment-friendly and most energy-efficient way. Fusion research, to realize the cyclic city metabolism, is under development not only in science and technology, but also in public policy. Here, at KIST, the Green City Technology Institute (GCTI) has been working earnestly in developing technologies for creating a green city that self sustains with a help from fusion research.

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