The Firm

Castillo Engineering Services. Designed to PermitSucceedSave

With 20+ years of experience and over 10,000 solar PV projects to date, Castillo Engineering Services is one of the most experienced solar PV engineering firms in the United States. Castillo Engineering delivers expertise in full service (Array, Electrical, Structural, Civil) solar PV design, engineering and consulting services for projects ranging from residential, industrial, commercial and utility-scale. We leverage decades of experience and longstanding AHJ relationships to deliver the fastest, first-time approved, permits in the solar PV industry. At Castillo Engineering – We Design to Permit®

Official Memberships

Licensed in over 40 States

40-States
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First Time Permit Approval Rate
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Successful PV Projects
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States – PE Licensed
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Years Solar Experience