18 Megawatt Battery Energy Storage System (BESS) Project
Project Highlights
- Project included the installation of a new 115 kilovolt (kV) substation that contained a 115/34.9 kV generator step up transformer and a 34.5 kV feeder array to three 6 megawatt (MW) battery enclosures.
- Location for the site fell within the watershed boundaries of the U.S. Army Corps of Engineers and a protected breeding area for several endangered bats.
- Worked with state natural resources officials to obtain necessary permits for the facility.
Project Description
The installation of a new 18 MW battery energy storage system within PJM’s operating territory in Pennsylvania supports the local community’s power flow by operating in the frequency response mode. The site is located near an existing wind farm and was selected based on its proximity to the facility’s point of interconnection. However, the site is within a designated U.S. Army Corps of Engineers watershed boundary and is home to a protected breeding area for several species of endangered bats. In addition, the site is at the top of a hill requiring stormwater runoff issues to be addressed to avert further erosion to the neighboring wind farm and the native forestry.
Sargent & Lundy was selected to perform engineering services for a new 18 MW Battery Energy Storage Project within the PJM’s operating territory, located in Pennsylvania. The project was to support the local area’s power flow by operating the new facility in the frequency response mode.
The project included the installation of a new 115 kV substation that contained a 115/34.9 kV generator step up transformer and a 34.5 kV feeder array to three 6 MW battery enclosures. An 115 kV overhead bus extension was installed to intertie the 18 MW facility to an existing wind farm point of interconnection (POI) with FirstEnergy.
The site was selected due to its proximity to the existing wind farm POI. The location for the site fell within the water shed boundaries of the Army Corp of Engineers and was also located in the protected breeding area for several endangered bats. S&L worked with the Department of Natural Resources in Pennsylvania to obtain the necessary permits to construct the facility.
Additionally, this site posed challenges with the storm water requirements due to its location on the top of a hill. Significant features were added to address any high velocity sheet runoff that would further erode the neighboring farm and native forestry.
Sargent & Lundy Services:
- Substation Engineering.
- Material Procurement Support.
- Environmental Permitting Support.
- Dynamic Modeling and Relay Coordination.
- OEM Interface and Coordination.
- Construction and Commissioning Management.
- EPC/EPCM, OE, and Full Design Capabilities.
Project Scope
The project included the installation of a new 115 kV substation that contained a 115/34.9 kV generator step up transformer and a 34.5 kV feeder array to three 6 MW battery enclosures. An 115kV overhead bus extension was installed to intertie the 18 MW facility to the wind farm’s point of interconnection with FirstEnergy.
Sargent & Lundy’s scope of work included:
- Environmental permitting support.
- Assisting in project permitting.
- Preparation of site grading drawings.
- Preparation of foundation drawings.
- Preparation of structure drawings.
- Preparation of physical design drawings.
- Preparation of protection and control drawings.
- Preparation of remote terminal unit configuration files.
- Permitting support including stormwater pollution prevention plan preparation.
- Preparation of cable sizing calculations and determination of requirements for thermal backfill.
- Review of vendor submittals.
- Engineering support of field construction.
- Preparation of arc-resistant switchgear spec and review of vendor drawings.
- Preparation of material requisitions.
- Engineering support of field construction.
- Preparation of record revision drawings.
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