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