Key factors must be considered before moving forward. We will determine your project’s feasibility.

Solar PV Design & Engineering

A carefully constructed design is the first step to a successful project. We are the top industry experts.

Solar PV project Commissioning

Essential for performance, safety, and warranty management for solar PV and energy storage systems.

System Performance Verification

Testing performance to verify production, design, and installation quality with system testing.

Solar PV Consulting

Expert advice from top solar industry professionals with hundreds of years of combined industry experience.

Independent Engineer Services

Our IE Review adds value and confidence that your project will stay online producing power as expected.

Solar PV Design
& Consulting Company

SEI Professional Services (SEIPS) and SEI Engineering (SEIE) are extensions of Solar Energy International (SEI) and operate as separate legal entities. SEI has a long and well respected heritage within the industry that dates back to 1991 as the leading non-profit technical training provider for the solar industry. SEIPS and SEIE were created in 2015 and 2016 respectively in response to the growing demand and requests from SEI’s students, alumni, supporters, and the broader solar industry to offer formal design, consulting, and field services across the globe.

Furthermore, SEIPS and SEIE will soon merge and will be offering consulting services under a single SEI Professional Services (SEIPS) company, but as of April 2019 SEI Engineering (SEIE) is still currently the sole provider of any and all formal engineering services. It is important to emphasize that until the merger of the two companies is finalized, we will continue to offer and perform all engineering services through SEI Engineering in accordance with the laws of the jurisdictions in which we work across the country.

Interesting Stats About SEI Professional Services


Over 550 Years of Collective Solar Energy Industry Experience


Over 200 Megawatts of Solar PV Designed, Installed, Commissioned, or Maintained


Over Four Dozen Solar Professional Team Members Employed


Ranked 38th in the Solar Power World Top 500 Contractors List for 2018

Our Team: Solar PV Engineering
and Performance Testing Experts

The SEI Professional Services (SEIPS) team includes the solar industry’s top PV system designers, engineers, and technicians. Our team has over 550 years of combined solar industry experience.  We are uniquely positioned to offer leading-edge knowledge of solar PV equipment and electrical codes and standards, but we also strive to pass on that knowledge to your organization and create self sustaining operations for years to come. The types of solar design and consulting services offered to your project can be tailored to meet your specific needs. Solar engineering services are offered separately through SEI Engineering (SEIE), which does business within the states where we are licensed to operate and that list continues to grow rapidly.

SEIPS provides expert consulting services during every stage of the solar project development life cycle from concept to commissioning and beyond through operations and maintenance (O&M). We pride ourselves in offering the very best quality assurance (QA) for the solar industry. Our consulting and design services include in-house licensed electrical, civil and structural engineers and as follow-up services we offer QA inspections during construction, performance testing, and commissioning services after construction. We also offer ongoing evaluation services of existing systems and troubleshooting of any kind. These services are offered across the globe in connection with the reach of the Solar Energy Energy International (SEI) network.

SEIPS Case Studies

Our case studies showcase the challenges and successes of select SEIPS projects and how we provide world class technical services and solutions to the solar industry.

SEIPS Tech Tips

We provide SEIPS Tech Tips in order to keep driving the solar industry forward. Knowledge is power. Learn from our 550 years of combined experience.

Contact SEIPS

Please contact us with your project specifications so we can give you a tailored proposal for design, operations, feasibility, commissioning or consultation.

Tech Tips & Case Studies

Read some of our articles below with insider tips and studies.

Leadership Team