Interconnection (IX) Package Overview
IX Packages are three-page plansets meant to cover a typical Interconnection Application for a solar array. This includes the:
- Site Plan: First page which shows the equipment placement on a to-scale drawing.
- Single Line Diagram: Second page which shows the equipment connections and details.
- Equipment Settings: Third page which includes the equipment and any attached notes and utility settings.
Each planset includes a DXF folder with images and a single DXF file for each page as well as a PDF output. These files can be submitted directly to the utility and used as a foundation for further project planning.
Solesca can currently export stampable drawings for systems up to 3 Transformers, which is typically 15MW. Drawings for larger systems will include a disclaimer indicating they are for reference only.
Site Plan
Site Plans show the array with equipment and a background satellite image. This includes all modules, placed equipment, parcel boundaries, and roads. Everything is to-scale in both the PDF and the DXF.
The project title and location are shown at the top with the LAT/LNG of the POI also shown for the utility reference.
Single Line Diagram
Single Line Diagrams (SLDs) are essential electrical drawings that illustrate the flow of power from the photovoltaic (PV) modules to the utility grid.
Solesca rapidly creates professional, PE-stampable SLDs using your project's specifications.
Solesca currently supports three primary system types:
- Behind the Meter: For systems connected behind an existing utility meter.
- CS Rooftop and Carport: For Community Solar interconnections in urban environments, typically rooftop or carport installations.
- Ground Mount: For all ground mount projects.
The Behind the Meter option allows connection to existing switchgear or a transformer.
When connecting to switchgear, you can specify the connection method: 'Breaker', 'Line-side tap', or 'Load-side tap',
covering all common interconnection scenarios. You can also input the existing meter number and existing breaker details on the switchgear,
ensuring the SLD accurately reflects on-site conditions.
CS Rooftop and Carport facilitates front-of-meter interconnections for urban systems.
It allows for connection to the grid via a new transformer.
You can also include an existing building's meter number for the utility's reference during application review.
Ground Mount handles all ground mount system configurations. You can specify all of your AC components, including relay settings for reclosers.
Equipment Settings
The equipment settings page includes site-specific information broken into four categories:
- Equipment list: List of all equipment shown on the IX Planset.
- Notes: Design-specific and utility notes combined into a single section.
- Inverter settings: Utility-specific inverter protection settings (taken from the applied Utility Template).
- Relay settings: Utility-specific relay protection settings (taken from the applied Utility Template).
This page allows you to tell the utility specific information about the project not included on the Site Plan or SLD.