Greenwich Hospital in Greenwich, Connecticut is a 174-bed community teaching hospital affiliated with the Yale New Haven Health System. For over ten years, the Hospital has worked with The Connecticut Energy Efficiency Fund (CEEF) and The Connecticut Light and Power Company (CL&P) to incorporate energy efficiency into major renovation and new building projects. All of the Hospital’s energy reduction measures have been implemented while maintaining a high level of service and comfort for employees and patients.
In 2006, Greenwich Hospital completed a 150,000 square foot expansion to its main hospital building and constructed a 50,000 square foot underground parking garage. Among the energy efficiency features are:
High efficiency lighting, lighting controls and the use of daylighting;
- Variable speed drive installations;
- Occupancy sensors; and
- Updated energy management system strategies.
In 2008, the Hospital completed a retro commissioning project to examine all major energy systems and uncover energy saving opportunities that had not been previously addressed. Through the CEEF-funded program, retro commissioning engineers identified over 30 additional efficiency strategies for the hospital, including:
- Lighting efficiency measures;
- Variable frequency drive optimization;
- Chiller pump optimization; and
- HVAC schedule optimization.
Greenwich Hospital is tackling these issues in phases. Phase I projects were completed in December 2008. Phase II and III improvements will be underway in 2009.
Greenwich Hospital was recently honored by the American Society for Healthcare Engineering as one of a dozen hospitals nationwide that was able to reduce their energy consumption by 10 percent or more over a 12-month period. The Hospital has also installed a combined heat system to produce electricity and heat in the plant.