A total of 740 lighting fixtures in Altgeld Hall were changed from T-12 fixtures to T-8 fixtures as part of the ICECF Lighting Retrofit. This will allow an Annual kWh Savings of 123,985 hours. The Simple Payback for changing the fixtures in Altgeld Hall is zero years, since the Classroom Renovation Project funded this work. Occupancy sensors were also installed in the lighting retrofit of this building in order to provide further energy savings.