Officials from Kuakini Medical Center said the facility will save an estimated $1 million a year in energy costs when it completes an energy efficiency project this fall.

The $5.8 million project will include a new central cooling and heating plant, lighting upgrades and a energy management and controls system, according to a news release issued today.

Massachusetts-based Metrus Energy will pay the upfront costs to construct, maintain and monitor the energy-saving improvements through an efficiency services agreement. Kuakini will pay Metrus for realized energy savings once the project becomes operational.

Metrus has partnered with Honolulu-based Energy Industries Corporation for project installation and ongoing maintenance.