A real estate investment group that owns the Sears Tower said it is pushing forward with plans to build a 500-room environmentally friendly hotel next door to North America's tallest building, but released few details on financing for a project that will cost as much as $225m.

The group, which includes investors Yisroel Gluck, John Huston, Joseph Chetrit and Joseph Moinian, said they would spend $350m to make the 110-story tower more environmentally friendly and reduce the amount of energy it uses.

Wall Street Journal