Interconnection Planning | PSCAD, PSS®E, and ASPEN Simulations

bay 1 51
Our Interconnection Planning services combine deep technical expertise with advanced modeling tools—PSCAD, PSS®E, and ASPEN—to streamline the path from application to approval. We help developers and EPCs de-risk interconnection delays, align with regional ISO standards, and deliver utility-ready simulation files that meet exact utility specifications. By addressing transient stability, load flow, and protection analysis early, we enable faster approvals, fewer redesigns, and smoother progress toward COD. With built-in flexibility for DG-scale projects and utility revision support included, Pure Power ensures your interconnection modeling is not only accurate—but engineered for speed, reliability, and long-term success.
 
Download Our IC Planning Overview

PSCAD MODELING

PSCAD Simulation

For Transient Analysis & Weak Grid Scenarios

  • Best For: Utilities that require transient analysis of the project or system, usually in relation to specific inverter performance.
  • Why it matters: PSCAD is commonly requested by utilities in regions with high renewable penetration or known grid stability risks.
  • Deliverables: .pscx file + simulation documentation + Observations.
  • Ideal for: Transient stability, low voltage ride-through (LVRT), and inverter-based resource (IBR) compliance.

PSS®E Load Flow & Dynamic Modeling

PSSE Simulation-1

Industry Standard for Load Flow and Interconnection Packages

  • Best for: Utilities that require dynamic modeling of the project or system. Most ISO's in the eastern US and Hawaii require PSS®E for this analysis.
  • Why it matters: PSS®E is the standard modeling platform required in most load flow and stability analyses during the interconnection process.
  • Deliverables: .dyr dynamic file + supporting documentation
  • Ideal for: Steady-state studies, load flow analysis, and dynamic response verification.

ASPEN OneLiner Modeling

ASPEN OneLiner

Preferred Tool for Protection Coordination Studies

  • Best for: Utilities that require effective grounding or coordination verification.
  • Why it matters: ASPEN is widely used for short-circuit and protection studies required for inverter and equipment coordination.
  • Deliverables: .olr file + functional model overview
  • Ideal for: Relay settings, fault current analysis, and breaker coordination.