Square Footage: 4,000
Actual Cost: $15 Million
Completion Date: December 2014

In 2008, St. Joseph’s broke ground a monumental $220 million expansion which would “max out” the capacity of the existing electricity infrastructure. The hospital was faced with the decision to add a costly power line or look for alternatives to meet their power needs.

Combined heat and power (CHP), generating both electricity and thermal energy from a single fuel source, would meet the 451-bed hospital’s goals. Significantly more efficient than traditional power generation, CHP can dramatically reduce utility costs while allowing the hospital to continue normal operations in the event of a power outage.

The team designed a $15 million CHP system to work in conjunction with the utility that includes a 4.6 megawatt gas-fired turbine and a 45,000 pounds/hour heat recovery steam generator. Locating an open site for the plant was challenging on the dense, urban campus. The design-build team tucked the plant into an underutilized open space suspended above a loading dock and under a three-story block of patient rooms.

Projected to generate 25 million kWh annually, the plant provides a majority of St. Joseph’s electricity. CHP allows the hospital to generate its own power and steam, improve reliability, lower costs, and reduce greenhouse gases.