Pre & Post Interconnection Services

Featured Articles

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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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Intro to Relays #2 - ANSI/IEEE Relay Numbers

Protective Relays are an advanced area of electrical engineering and contracting that can be intimidating, but they ...

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Intro to Relays #1 - What are Relays, CTs & PTs?

Protective Relays are an advanced area of electrical engineering and contracting that can be intimidating, but they ...

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Areas of Expertise

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Distributed Generation - C&I

Engineering for commercial and industrial solar and BESS projects, supporting permitting, utility coordination, and design from development through construction.

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Transmission - Utility-Scale

Engineering for utility-scale solar + BESS projects, supporting interconnection, system studies, utility coordination, and design through development and execution.

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Ground Mounts

Engineering services for utility-scale and commercial ground-mounted solar systems, addressing grading, foundations, interconnection, and constructability.

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Rooftops

Engineering solutions for rooftop solar projects, including structural evaluation, electrical design, code compliance, and constructible permit sets.

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Carports

Integrated engineering for solar carports, combining structural, civil, and electrical design to deliver durable, code-compliant parking solutions.

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Battery Energy Storage Systems

Engineering services for standalone and solar-paired battery energy storage systems, including system sizing, electrical design, interconnection, and code compliance.

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Microgrids & Repowering

Engineering support for microgrids and repowering projects, optimizing system upgrades, integrations, performance, and long-term asset value.

Nationwide Footprint

We are a single firm that can meet your needs everywhere you are developing or installing. 

130+

In-House Engineers

3,400+

Solar & BESS Designs 100KW+

17,000+

Projects Engineered

58+

PMs and Professional Engineers

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Power Eng. Videos

Smarter Solar Design with SAM Simulations | Solar + Storage Engineering

Why Developers & EPCs Need to Prioritize Power Studies for All Solar + Storage Projects

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

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
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Need Power Engineering or Power System Studies?

Tell Us About Your Upcoming Solar + Storage Project.

Power Engineering Services

Value Engineering Tips See More

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..

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..

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

Questions? Answered

Power engineering is the specialized discipline that makes sure a solar or storage system connects to and operates safely on the grid — through power system studies, protection design, and interconnection support. Pure Power's power engineering team handles pre- and post-interconnection studies, protection systems, microgrid engineering, and utility coordination. It's the expertise that keeps a project compliant, safe, and approvable from the utility's perspective.

Pure Power conducts a full range of power system studies, including load flow, reactive power, short circuit, cable ampacity, arc flash, grounding, lightning risk assessment, and equipment evaluation. These analyses confirm the system will operate safely, meet utility requirements, and protect equipment and personnel. They support interconnection, grid compliance, and utility approval.

Protection design ensures the system detects and isolates faults quickly to keep people and equipment safe. Pure Power provides protection coordination studies, SEL relay RDB file generation, control and wiring schematics, and testing procedures. This delivers a complete, testable protection scheme ready for commissioning and utility acceptance.

Pre-interconnection studies — such as load flow, short circuit, dynamic, and protection studies — evaluate how a project will affect the grid before it's approved, supporting the utility application and queue process. Post-interconnection work carries the project through utility submissions, impact study support, meetings, and drawing revisions until approval. Pure Power supports both phases, including PSCAD and PSS®E modeling and queue strategy.

An arc flash study calculates the potential energy released during an electrical fault, which determines the safety measures and personal protective equipment required to work on the system. It's essential for worker safety and code compliance at solar and storage facilities. Pure Power includes arc flash analysis as part of its power system studies, alongside grounding, short circuit, and equipment evaluation.

Yes. For microgrids, Pure Power provides preliminary design, full engineering, interconnection, protection systems, power studies, DER (distributed energy resource) integration, load management, and commissioning support. For repowering, the firm supports system upgrades and integrations that optimize long-term asset performance — helping owners get more out of aging or underperforming projects. Both draw on the same power engineering expertise that keeps systems safe, compliant, and grid-ready.

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