Expert design is the core of successful PV and energy storage projects.

SEI Engineering was formed to address the overwhelming need for our expertise in the commercial and utility-scale design space.  SEI Engineering embodies the pinnacle of quality and experience in the PV industry.  Led by a group of PV experts who work in code development and educate the industry, the expertise embodied in Solar Energy International (SEI) is focused through SEI Engineering to deliver world-class service. 

Contact us to determine how we can help you on your next project either by email or through a proposal request here.

Site plan and array layout

Electrical and grounding strategy

Module racking method

Balance of system (BOS) components and required labeling

Equipment pad or skid structural engineering and mechanical drawings

Data acquisition system (DAS) plan

Utility interconnection method

Civil engineering including erosion & sediment control, SWPPPs, CUPs, and oversight of related permitting processes

SEI Engineering delivers complete construction-ready plan-sets within budget and on-time – no exceptions.  We do not compete with the cheapest design firms in the industry because the level of quality they produce is not what we pursue.  Our interest is in delivering the best system to you, our client, with your highest interests considered at every step of the design process.  This is not to say the consideration of costs is not also paramount.  It’s that we believe quality during the design process is the first step in assuring you will not be performing costly retrofits or replacement of equipment either before or after your system is completed.  Our costs will be recouped many-fold through fewer problems during construction and for the life of the system.


Quality Control Process

SEI Engineering incorporates a quality control process that is world-class by utilizing the SEI network to review each and every design prior to each milestone delivery.  This means that your plans are looked at by another PV expert that is not part of the design team for construct-ability, safety, code compliance, and overall presentation.  The depth and level of expertise reviewing each set of plans we produce are unmatched in the industry.  You can rest assured knowing the best and brightest engineers and technicians are looking at every part of your system before it is built. SEI Engineering also performs third-party reviews of engineered designs by EPC’s and other design firms using the same staff that performs our internal engineering quality reviews.

Our participation in your project elevates quality from the start, which saves both time and money.  Coupled with our performance verification and site inspection services, a full quality assurance package can be implemented.  Read more about our QA/QC process.


Civil and Structural Engineering Services

In addition to electrical engineering, SEIPS provides in-house civil and structural engineering services and complete design project management. We are experienced in acquiring all types of permits associated with solar installations in many states, and therefore are familiar with the potential variability of the jurisdictions involved. The comprehensive nature of our in-house engineering services make the integration of disciplines seamless.  You will be managing less people while receiving a better product and service. Make sure to browse our Case Studies and Tech Tips to view some of our projects and glean the best advice from the staff at SEI Professional Services.

We are constantly acquiring engineering licensure for additional locations, so don’t hesitate to contact us to find out if we are practicing in your state. You can reach us at or (970) 527-3920.  We look forward to assisting you on your next project or portfolio of projects.

SEI Engineering is licensed and authorized to offer engineering services in the following states shown in the map below. 

Map showing states in the United States where SEI Engineering is licensed