The new 12.5 kW array will be the second rooftop installation at the facility. The current array, on top of Deloitte Auditorium, produces about 41,000 kilowatt-hours (kWh) annually, – or about 3.4% of the electricity needed to power BIF for an entire year. The new array will be smaller but will supply enough power to offset the anticipated energy usage of the fourth floor addition by contributing 15,500 kWh per year.

https://giesbusiness.illinois.edu/news/2019/04/22/solar-panels-added-to-...