Here is an intriguing note to the factory aesthetic. Welles Bosworth's original power plant for the institute has been converted for cogeneration and provides space for the Lean Aerospace Initiative. A new three-bay monumental glass facade is cut at the roofline by three circles and a truncated conical stack rising from the center. The glass wall can be removed to install or repair large machinery. This plant supplies most of the heat and chilled water for the institute. Actually, a number of industrial-type buildings are present throughout the MIT campus.