Comerica Bank of Howell


Comerica Bank in Howell, Michigan is one of 481 branches found throughout Michigan, Texas, Arizona and California. Comerica was founded in Detroit, Michigan, and the financial services corporation has put their customers first for the last 162 years. To improve their client’s banking experience, Comerica wanted to improve their light levels all while reducing their operating costs.

The CGE Energy team was able to reduce the Howell location’s energy use by 63%. There were 182 fixtures upgraded in the project scope.

The team upgraded each of the facility’s exterior metal halide exterior fixtures to T5 fluorescent fixtures, and converted wall packs to compact fluorescents. For Comerica’s interior lighting, CGE Energy retrofitted their 2x4 troffers to T8 lamps, and utilized reflectors to reduce three lamps to two lamps for additional energy savings. CGE converted metal halide flood lights to compact fluorescent as well, and installed sensors where applicable.

Energy Saving Results

By upgrading to new energy efficient lighting, Comerica Bank experienced a 27-month return on investment with an average monthly energy savings of $256. The projected energy cost savings are $35,233 over the next 10 years.

With over $69 billion in assets, Comerica Bank knows how to deal with money. This energy efficient lighting upgrade made good financial sense to them.

See All Case Studies

Business Segment(s)


10-Year Energy Savings

Before: $55,926

After: $20,693

63% Savings