Port Jefferson, with a population of 7,750, is located on Port Jefferson Harbor, an inlet of the Long Island (LI) Sound, on the north shore of Long Island, about 65 miles east of New York City.
Port Jefferson has numerous facilities that are critical not only to the village, but also to all of central Long Island, including St. Charles and John T. Mather Hospitals, schools water supply and wastewater treatment facilities, various government offices, and a thriving commercial district vital to the community, including grocery stores, service stations, pharmacies. A map showing the locations of the critical facilities in Port Jefferson is shown below.
Need for the Project
Port Jefferson has experienced widespread and extended power outages as a result of extreme weather events, including Hurricanes Sandy and Irene and other storms, and major bulk system outages such as the Northeastern Blackout in August 2003. St. Charles Hospital, a regional hospital with 231 beds, lost grid power for 10 days following Hurricane Irene. Mather Hospital, which has 248 beds, lost power for 47 hours following Hurricane Sandy; although Mather has a back-up generator, the back-up system cannot power diagnostic equipment, cooling or chilled water.
Loads and Distributed Energy Resources (DER’s)
Global Common defined the scope of the microgrid to encompass the critical facilities and other commercial establishments that are important to the community, and could be cost-effectively included within the microgrid. The peak coincident microgrid load is 7,676kW, which includes the critical facilities and about 2,353kW for small commercial establishments and residences.
The goal of the project is to be profitable during normal times, and to assure a reliable source of power during grid outages. The microgrid will include the following new DERs:
A circuit diagram and a one-line diagram are shown below.
As shown in these figures, use of the existing distribution system will allow the DERs to connect with all the critical facilities and supply numerous commercial and residential establishments in downtown Port Jefferson.
A summary of project benefits for various stakeholders is presented below.
St. Charles and Mather Hospitals
Reduce electric energy costs for by 15%-25%
Reduce or eliminate peak demand charges; currently at $22/kW from June-Sep;
Reduce fuel use for heating by 135,000 MMBTU’s per year
Improve energy reliability and resiliency
No capital investment
Other critical facilities and commercial establishments
Reduce electric energy charges by 10%-15%
Provide reliable power supply during macrogrid outages
Maintain services for customers and the community during outages to the macrogrid
Commercial establishments will continue to earn revenue from their business operations during power outages to the macrogrid
During normal operating conditions, the batteries and thermal storage systems will reduce or eliminate peak demand charges for water supply and waste water treatment plants
Village of Port Jefferson
Residents and customers will benefit from services provided by critical and non-critical facilities
Maintain power for critical government activities during power outages on the macrogrid
Project will reduce air emissions by using more efficient CHP technology to supply both electric and thermal energy