Hong Kong's first zero-carbon building ready for viewing

The city's first zero-carbon building, in Kowloon Bay, is expected to produce an energy surplus equivalent to one year's electricity usage by 132 four-person families.

The experimental building, steered by the Construction Industry Council, relies on solar panels for about 70 per cent of its energy. The rest comes from biodiesel, a fuel recycled from cooking oil.

Free tours are on offer over the Christmas holidays.