Fuel-Efficient Power Solutions
Project: A Distributed Energy Resource project was undertaken by a US Navy Base. This microgrid project was completed as a joint venture with the Connecticut Municipal Electric Energy Cooperative. A 7.4-megawatt natural gas-fed fuel cell was added to create a Microgrid for the Subbase. Groton Utilities (a CMEEC member) will receive the power from the fuel cell during normal operations. Critical operations of SUBASE NLON will be feed by the fuel cell in “island mode” during a service disruption. The 1960-era boilers are also being replaced as part of this project and the heat recovery from the fuel cell will be combined with the new boilers.
Scope: Test 2 new Rolls Royce 5.4MW reciprocating engines at 13.8kV. Each engine generator was tested nonstop over 30 days at different load levels to validate the reliability of the engine generators. Additional testing was conducted to test the paralleling of the generators as well as the transfer from sending power to Groton Utilities and maintaining constant power to the Subbase.