Preliminary Design Engineering Services & Engineer of Record
Pure Power is committed to delivering comprehensive preliminary engineering services and serving as the engineer of record for solar and storage projects. Our expertise encompasses various services, including project design, conducting studies, generating reports, and other preparatory activities that propel projects from conceptual stages to physical construction. Moreover, we specialize in identifying and outlining the infrastructure requirements of projects, thereby assessing their viability. We also offer essential technical support and provide the necessary drawings to navigate the utility application process successfully, ensuring your project meets all regulatory standards and progresses smoothly.
Services
Interconnection Documents
Interconnection applications, utility forms, single-line diagrams, technical exhibits, and supporting documentation prepared for utility review and approval.
Utility Coordination
Technical coordination with utilities, including study support, comment responses, meetings, modeling updates, and drawing revisions through approval.
Preliminary Array Layout
Preliminary site and array layouts optimized for capacity, constructability, setbacks, grading considerations, and interconnection strategy.
Glint & Glare Studies
FAA-compliant glint and glare analysis to evaluate visual impacts, support permitting, and address aviation and community concerns.
PVSyst Models
PVsyst energy modeling, production estimates, loss analysis, and third-party model review to support development, financing, and performance validation.
Energy Models
PVsyst modeling, production estimates, performance ratio analysis, and third-party model review to support development and financing.
Featured Articles
The Power of Interconnection Planning - Why Solar Developers Need PSCAD, PSS®E, and ASPEN Expertise
Interconnection queues are more congested than ever, and the path to approval is increasingly opaque. Developers are ...
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Cable Limiters Under NEC Regulations – Avoiding Costly Solar PV Project Delays
In the complex world of solar interconnections, cable limiters have long been a point of confusion, debate, and ...
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Bridging the Information Gap: How to Avoid Delays in Commercial PV Engineering
Delays are just about the worst problem for a developer or EPC working on a commercial solar project. Slowdowns cause ...
Read MoreAreas of Expertise
Distributed Generation - C&I
Engineering for commercial and industrial solar and BESS projects, supporting permitting, utility coordination, and design from development through construction.
Transmission - Utility-Scale
Engineering for utility-scale solar + BESS projects, supporting interconnection, system studies, utility coordination, and design through development and execution.
Ground Mounts
Engineering services for utility-scale and commercial ground-mounted solar systems, addressing grading, foundations, interconnection, and constructability.
Rooftops
Engineering solutions for rooftop solar projects, including structural evaluation, electrical design, code compliance, and constructible permit sets.
Carports
Integrated engineering for solar carports, combining structural, civil, and electrical design to deliver durable, code-compliant parking solutions.
Battery Energy Storage Systems
Engineering services for standalone and solar-paired battery energy storage systems, including system sizing, electrical design, interconnection, and code compliance.
Microgrids & Repowering
Engineering support for microgrids and repowering projects, optimizing system upgrades, integrations, performance, and long-term asset value.
Videos
What is Interconnection Planning? | PSCAD PSS®E & ASPEN Simulations
Project Kickoff Done Right: What Developers and EPCs Need Before Engineering Starts
Unrivaled Experience & Knowledge
- Over 3,400 full designs (100kW & larger) completed & submitted for permits, plus other involvement in over 17,000 DG and Utility-Scale project touchpoints.
- Essentially all this experience is still with the company, thanks to high retention rates for engineers & project managers.
- We only design solar + storage systems and understand it at a deep level that a jack-of-all-trades firm can't match.
- This experience allows us to solve complex engineering challenges and identify unforeseen risks in design & construction so clients can maximize the performance and profits of their solar + storage system.

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Large In-House Team for Fast Turnaround
- 130+ in house engineers, including 58+ highly experienced project managers and professional engineers .
- Fast response time to questions from skilled project managers that understand time is money.
This brings the following benefits:
- High bandwidth enables fast turnaround time on the most challenging projects and largest portfolios.
- We can accommodate our clients' aggressive schedules.
- Minimal use of subs, so we can expedite the work as needed.
- In-house cross functional engineering teams allow us to provide clients with a broader suite of services.
Trusted by Leading Developers & EPCs
Eric Sieckmann
Penn Renewables
Hartman Hoel
Sunpeak
Peter Misthos
Nautilus Solar Energy, LLC
High-Quality Drawings & Reports
We are known throughout the industry for our detailed, easy to understand construction drawings for our non-engineer clients and installers.
This brings the following benefits for clients:
- ProcurementAvoids mistakes when ordering materials.
- PermitsFaster approval by the AHJ
- InstallersAvoid Errors or bad practices during installation

Need Preliminary Engineering or Interconnection Assistance?
Tell Us About Your Upcoming Solar + Storage Project.

Value Engineering Tips See More
Value Engineering in Solar + Storage - Why “One-Size-Fits-All” Doesn’t Work
Solar engineering is often seen as a simple exercise of cutting installation costs. In reality, far more is at stake. Value engineering is the process of reducing costs while carefully balancing impacts on quality, performance, and long-term..
Energy storage can be the “Swiss-army knife” of the electricity grid. Reports for more than a decade have demonstrated the value storage can provide. But now that states have moved from piloting energy storage to adopting it at scale, there is a..
The Most Common Carport Electrical Design Mistakes and How EPCs Can Eliminate Them
Solar carports may look deceptively familiar to rooftop or ground mount projects: steel, modules, inverters, conduits. But not so fast! Treating carports that way is one of the most direct paths to rework, delays, and uncomfortable conversations..
Simplify the Complex - Rethinking Standardization for Modern Solar Projects
Owners & developers want long-term performance. EPCs want to get steel in the ground and pass inspections.Between those two priorities lies the real challenge: how much of your project should be standardized, and when does customization pay off?
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FAQ's
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What is preliminary engineering for a solar or battery storage project?
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Preliminary engineering is the early-stage design and analysis that moves a solar or storage project from concept toward construction. At Pure Power it covers preliminary site and array layouts, interconnection and utility coordination, energy modeling, and the studies developers need to de-risk a project before committing to full design. It gives you the technical foundation to pursue interconnection approval, financing, and permitting with confidence.
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What deliverables are included in preliminary engineering services?
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Typical deliverables include preliminary site and array layouts optimized for capacity and constructability, single-line diagrams and technical exhibits for utility interconnection applications, FAA-compliant glint and glare analysis, and PVsyst energy models with production estimates. These are prepared to support interconnection, permitting, and financing. Pure Power is known throughout the industry for detailed, easy-to-understand drawings that help avoid procurement mistakes and installation errors later.
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What is a glint and glare analysis, and when do I need one?
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A glint and glare analysis evaluates whether sunlight reflecting off solar panels could affect nearby roads, homes, or air traffic. It's frequently required for permitting and is especially important for projects near airports, where FAA compliance is necessary. Pure Power performs FAA-compliant glint and glare studies as part of preliminary engineering to support visual impact evaluation and approvals.
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What is PVsyst energy modeling, and why does it matter for financing?
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PVsyst energy modeling simulates how much electricity a solar project will generate over its lifetime, accounting for site conditions, equipment, and system losses. Accurate production estimates matter because lenders and investors rely on them to underwrite a project. Pure Power provides PVsyst modeling, loss analysis, and third-party model review to support project development and financing decisions.
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What types of projects does Pure Power's preliminary engineering support?
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Pure Power provides preliminary engineering for commercial and industrial (C&I) solar, utility-scale solar, community solar and ground-mounted systems, solar carports, battery energy storage systems (BESS), microgrids, and repowering projects. With 130+ in-house engineers and more than 3,400 completed solar and storage designs, the team supports projects nationwide from concept through construction.
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