PRINCETON, N.J. — NRG Energy, Inc., through its subsidiary NRG Thermal, has signed a contract to provide comprehensive, high-efficiency energy services to the new University Medical Center of Princeton at Plainsboro (UMCPP). The 237-single patient room, acute-care hospital is currently under construction in Plainsboro, NJ, and is expected to open by the end of 2011.

Under the 13-year contract, NRG will provide services from its Combined Heat and Power Plus (CHP Plus) program that integrates conventional, proven energy sources and leverages them with leading efficiency and environmental technologies. The hospital will use electricity from a combined heat and power system that includes the production of steam for heating and chilled water for air conditioning, achieved by means of a thermal energy storage system. Other “green” elements include solar power generation and energy-saving “smart” meters, as well as and backup power.

“NRG’s proposed CHP Plus program enables us to use environmentally sustainable energy as we fulfill our mission of providing high-quality health care,” said Barry Rabner, President and CEO of Princeton HealthCare System (PHCS), whose acute-care hospital is UMCPP. “NRG will fully meet our hospital’s energy needs while reducing our operating costs and protecting the environment.”

Benefits of the CHP Plus system include:

• Lower Total Costs. By using a packaged approach to energy, overall energy costs are significantly less than providing and implementing these sources of energy individually.
• Optimal Energy Efficiency. CHP Plus takes an already energy-efficient power system and enhances it with “smart” appliances and meters that monitor and adjust energy consumption for optimal efficiency.
• Employment. Building and operating the CHP Plus systems will create approximately 125 construction jobs and a dozen long-term employment opportunities.
• Reliability. The on-site CHP facility is especially beneficial for a hospital as it will provide enhanced reliability and 100% redundancy for its power needs. Generally, hospitals have two sources of power: the local utility and limited power from emergency generators in case of grid failure. The UMCP replacement facility at Plainsboro will have access to power generated by CHP as the primary source; this power will be backed up fully by the local utility power, and finally, a limited power to crucial areas of the hospital from emergency generators.

About NRG

NRG Energy, Inc., a Fortune 500 company, owns and operates one of the country’s largest and most diverse power generation portfolios. Headquartered in Princeton, NJ, the Company’s power plants provide more than 24,000 megawatts of generation capacity—enough to supply more than 20 million homes. NRG’s retail business, Reliant Energy, serves more than 1.6 million residential, business, commercial and industrial customers in Texas. A past recipient of the energy industry’s highest honors—Platts Industry Leadership and Energy Company of the Year awards, NRG is a member of the U.S. Climate Action Partnership (USCAP), a group of business and environmental organizations calling for mandatory legislation to reduce greenhouse gas emissions. More information is available at www.nrgenergy.com or www.nrg-econrg.com