Full life-cycle engineering support for solar energy projectsTetra Tech offers our solar energy clients a full suite of services in support of the solar energy project life cycle.

From the initial prospecting and conceptual design phases through commercial operations and repowering campaigns, Tetra Tech has the technical depth and breadth to support the many facets of solar energy projects.

Our broad geographic presence and wide array of services is made possible through our deep talent pool of engineers, data scientists, analysts, project managers, and technicians.

Tetra Tech’s goal is simple: Help our clients maximizine their return on investment by leveraging our experience siting, engineering, managing, and maintaining solar energy projects to implement best practices, streamline schedules, and cost-effectively execute projects.

Solar Energy Engineering Services Overview

More than

solar projects worldwide

Global Reach, Local Expertise

Solar Energy Engineering Services Overview

Our solar energy experts provide the comprehensive engineering support clients need to quickly and cost-effectively bring renewable energy projects to market.

We are Leading with Science® to provide sustainable and resilient solutions that spanthe project life cycle.

Tetra Tech provides practical, innovative, sustainable solutions around the

WORLD.

DESIGNDEVELOPMENT CONSTRUCTION OPERATIONS

Tetra Tech provides engineering, construction, and environmental services, bundled orá la carte, for the development, construction, and operational phases of solar energy projects.

• Due diligence support• Feasibility studies• Siting• Resource modeling

and energy simulations (PVsyst)

• FAA glint/glare studies• Resource measurement• Conceptual budgets

and schedules• Conceptual design/site

layout• Emergency response

plans• Stormwater pollution

prevention plans• Hazardous waste

management plans• Transportation studies

• Detailed civil, mechanical and electrical design – (AC, DC, SCADA, substation, interconnect, roads, foundations, stormwater)

• Geotechnical and seismic studies

• Surveying• Value engineering• System optimization• Constructability reviews• Detailed budgets and

schedules

• Constructability reviews• Field engineering services• Construction QA/QC• Response to requests for

information• Field change requests• Management of

construction and design changes

• Review of subcontractor and vendor submittals

• Record drawings• Mechanical substantial

completion verification

• Performance analysis dash-boarding and reporting

• Energy loss analysis• Plant optimization and

predictive analytics• Project closeout• Repowering• Maintenance operating

and maintenance plans• Development/analysis• Testing services including

ASTM E2848 capacity and performance ratio testing and I-V curve tracing

• Aerial thermal imaging

Tetra Tech Solar Engineering ProjectsTetra Tech has experience serving in nearly every capacity on solar projects for a variety of client types varying from developers, IPPs, EPCs, investors, OEMs and compliance managers serving in due diligence, design, owner, or independent engineer roles.

Virginia Based UtilityVirginia Based Utility has contracted with Tetra Tech to performOwner’s Engineer services for their solar energy developmentprojects throughout the state of Virginia. These engineering services ensure solar energy project designs and their construction meet the appropriate technical specifications and are in compliance with all applicable codes, regulations, permitting requirements, and agency approvals. Services being provided include the following:

• Performing third-party technical reviews of the civil, electrical, and structural engineering design package deliverables at the 50%, 90%, and Issued for Construction project phases

• Providing field oversight during on-site construction activities to ensure conformance to the approved design documents

• Delivering solar project conceptual design drawings including the preliminary layout, solar perimeter shading analysis, and topographic evaluation

• Developing and delivering project civil design packages fully incorporating the management of erosion, sediment, and stormwater

• Generating financeable PVsyst energy simulations and associated deliverable sets

• Producing single line diagrams for AC and DC systems

Skipjack Solar Energy Center — AES (S-Power) AES (sPower) selected Tetra Tech to complete the civil andstructural design and obtain permit approvals for the 175-MW(est.) Skipjack Solar project based on our high-quality workand dedication to meet their aggressive 10-week submittalschedule. The scope of work has included the following:

• Performing an in-depth review of civil and structural designs to identify and correct any deficiencies, omissions, errors or fatal flaws that could impact the permit approval process

• Reviewing the designs from a constructibility standpoint and making the necessary corrections to reduce the potential for issues occurring during the construction and operation phase of the project

• Providing construction support services by responding to requests for information (RFIs) and performing periodic construction inspections during the period of construction

• Generating the final As-Built Drawings

Panasonic Corporation of North AmericaTetra Tech provides solar performance engineering consultingservices for a portfolio of photovoltaic (PV) projects throughout North America. The original 325-MW portfolio consisted of 15 utility-scale solar projects located in 4 U.S. states and the province of Ontario. The range of engineering services has included the following:

• Monthly performance reports for asset managers and lenders

• Solar resource data analysis and surrogation• Energy guaranty tracking and reporting• Time-and energy based availability guaranty verification• Soiling and snow energy-loss calculations• Tracker-related energy loss analysis

Summit Ridge EnergyTetra Tech is providing engineering consulting, engineering andpermitting services to Summit Ridge Energy for a portfolio ofPV projects in Illinois. The portfolio includes several proposedcommunity solar projects from the site selection throughthe discretionary permitting process. Approximately 222-MW solar projects gained full discretionary permittingapproval from the corresponding County Boards. The full rangeof project development and permitting services includes thefollowing:

• Site suitability assessments• Solar layout design• Civil engineering and stormwater pollution prevention

plan preparation• Solar glare and glint studies FAA consultations

Solar Energy Engineering Services Overview

Tetra Tech’s innovative, sustainable solutions help our clients address their water, environment, infrastructure, resource management,energy, and international development challenges. We are proud to be home to leading technical experts in every sector and to use that

expertise throughout the project life cycle. Our commitment to safety is ingrained in our culture and at the forefront of every project.We combine the resources of a global, multibillion dollar company with local, client-focused delivery. tetratech.com

3475 East Foothill Boulevard, Pasadena, CA 91107 USA

Contact us:solar@tetratech.com

Contact Information

We are the 21,000 faces of Tetra Tech. We are dedicated problem-solvers and innovators from 60 disciplines collaborating on innovative projects worldwide.

With 450 offices worldwide, we can quickly respond to our clients’ needs.

Who We Are