OUR SERVICES
Substation
Design
Power Designed. Power Delivered.
With over 25 years of experience, Castillo Engineering has expanded its expertise into high-voltage substation design, building upon a strong foundation in utility-level power generation.
Our portfolio includes substation design projects for hospitals, municipalities, and data centers, where we know that delays can be costly. We excel at resolving complex interconnection challenges, ensuring minimal downtime and seamless project execution. By treating your challenges as our own, we deliver efficient, reliable solutions tailored to your specific needs.
Markets we serve
Developers
A one-stop-shop for engineering, we have honed our internal technologies and tools to increase efficiency and never lose sight of quality.
Owners, Utilities, IPPs
Through rigorous oversight and technical expertise, we ensure your investments are protected - delivering confidence through every phase of development.
EPCs
We provide tailored solutions across every phase of a project - from design to construction close-out - to ensure speed and efficiency throughout the project lifecycle.
Data Centers
Leveraging our expertise across electrical, structural, civil, and substation design, we ensure seamless support for your high-voltage engineering needs so you can focus on powering the digital world
WHY CASTILLO
Castillo Engineering is empowering utility-scale projects with innovative, customized, and process-driven engineering
Technology-First
We use advanced technology, including real-time dashboards and proprietary tools, to streamline workflows, boost efficiency, ensure transparency, and enable proactive decision-making for seamless execution.
Engineering Expertise
We have decades of combined experience in renewable energy engineering with over 10GWs of projects completed to date.
Process-Driven Quality
Castillo Engineering delivers precise, cost-effective designs with expert project management, leveraging proprietary tools to ensure quality, efficiency, and timely execution.
Long-Term Partner
Castillo Engineering builds lasting partnerships by aligning resources to deliver flawless execution, superior designs, and comprehensive project support with a client-focused approach.
Scalable
Castillo Engineering combines expertise, technology, and automation to scale efficiently, maintain quality, and streamline solar project execution while minimizing costs and delays.
Innovative Problem Solver
Castillo Engineering turns challenges into opportunities with innovative solutions, expert teams, and proactive problem-solving to keep projects on track and build trust.
Substation Design Services
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Site preparation and land development support
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System architecture
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3D physical designs (e.g., elevations and general arrangement)
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Control enclosure (Control Panel Layouts)
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Relay, protection and control design
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Equipment specifications and Bill of Materials (BOM)
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Power System Studies
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Equipment submittal review