The Philadelphia Industrial Development Corp. has selected Ameresco, Inc., of Framingham, Mass., to design, build and operate a 6-megawatt natural-gas fired peaking power plant to anchor the Navy Yard's microgrid project.

The project will incorporate three Cummins reciprocating engines that will supply power during peak demand periods, and also provide back-up and resiliency support as required, said Michael T. Bakas, senior vice president of Ameresco. The project is expected to be completed by the end of 2017.

The generation project is estimated to cost $11 million, said Rudolph G. Terry, director of the Navy Yard's smart grid operations. The plant is part of the Navy Yard's microgrid project, a local electrical system that can operate independently of the regional grid during outages.