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Top-tier substation designs for solar and energy storage systems

Leveraging its over 25 years of utility engineering experience, Castillo Engineering has honed its deep technical expertise in the design and engineering of Substation designs for utility-scale solar systems. Castillo Engineering is licensed in all 50 U.S. states and Puerto Rico and has been able to consistently deliver safe and high-quality interconnection designs that are fully compliant with national, state, and local codes as well as each electrical company’s unique requirements.

Schedule a meeting with one of our solar and storage experts

Our Substation Design Plans (IFCs) Include:

From the initial stages of development through to project completion, we provide:

  1. Site preparation and land development support

  2. System architecture

  3. 3D physical designs (e.g., elevations and general arrangement)

  4. Control enclosure (Control Panel Layouts)

  5. Relay, protection and control design

  6. Equipment Specifications and Bill of Materials (BOM)

  7. Power System Studies

  8. Civil engineering

  9. Structural engineering


Castillo Engineering’s long-standing utility relationships across the country combined with 25+ years of Substation design experience containing the most current utility regulations have resulted in the firm’s 99 % first time permit approval rating record. By ensuring that utility interconnections are approved as efficiently as possible, EPCs and developers can move forward with more projects in less time, resulting in greater returns on investments.

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