If you are looking to invest in Commercial & Industrial (C&I) solar + storage projects, you may have heard of the term Owner’s Engineering. It’s an essential function that can save time and money on large solar deployments. Planning errors and...

Through our work as an Owner’s Engineer, Pure Power has extensive experience evaluating, inspecting, and commissioning PV power systems. While I-V curve tracing is an essential tool in these efforts, it is not necessarily the best tool for every...

Drone surveys are powerful tools that help maximize the return on investment (ROI) in Distributed Generation PV systems. They offer unmatched precision in the design process, which can significantly increase a solar + storage project’s system...

In the first part of this two-part article, I covered the roof membranes and roofing systems commonly used in commercial and industrial (C&I) buildings. Roof identification is important because this information drives other design and engineering...

Commercial and industrial (C&I) roof-mounted solar photovoltaic (PV) systems present a unique set of engineering challenges and technical risks. Some commercial roof considerations—such as the structural analysis and roof loading plan—apply...

The U.S. energy storage capacity is expected to nearly double by the end of 2024! This significant growth is driven by the expansion of large-scale battery storage systems, which enhance the integration of renewable energy sources and improve grid...

Mother Nature provides an unlimited source of clean energy from the sun. However, she also has a dark side that can wreak havoc on your array. As your Owners Engineer, Pure Power ensures the assets you build and acquire are designed for all the...

When designing utility-scale solar energy projects, optimizing central inverters is a crucial aspect that project developers, EPCs, and stakeholders often overlook. The strategic placement and design of central inverters plays a significant role in...

Pure Power has provided clients with professional services for more than a decade, including electrical, structural, and mechanical engineering, energy modeling, project development support, and PV plant performance analysis and reporting. The...

Companies continually seek ways to maximize efficiency, reduce costs, and streamline their operations in the increasingly competitive solar industry. A common strategy many firms adopt involves outsourcing engineering services despite the presence...

In the competitive world of solar engineering, the allure of saving money on upfront costs might seem like a wise choice for many EPCs. However, deciding to opt for a lower-cost overseas firm often comes with hidden costs and risks that can...

RE+ 2023 brought together leaders, innovators, and stakeholders from the renewable energy industry to discuss the latest developments, challenges, and opportunities in the field. Amidst the numerous booths, presentations, and discussions, several...

Structural Engineering is a small but critical part of the engineering for a rooftop solar project.  It can make or break the feasibility of the project or have significant effects on the system size and cost of racking. 

This is a follow up to the article Design Recommendations for 1500V String inverters, where we only briefly mentioned "Free Voltage Drop" and wanted to dive in a little deeper here.

When we value engineer a large solar project, we can take advantage...

At Pure Power Engineering, our engineers work closely with project originators, developers and EPC firms to reduce the upfront capital costs of construction without sacrificing long-term operating costs. Given the dynamic nature of solar...

Carports and canopies are the most expensive type of racking or PV module support structure. Therefore, its critical to optimize equipment selection and value engineer these projects.

Protective Relays are an advanced area of electrical engineering and contracting that can be intimidating, but they don’t have to be! This series of 3 articles will introduce basic relaying to the non-engineers in the solar and energy storage...

Protective Relays are an advanced area of electrical engineering and contracting that can be intimidating, but they don’t have to be! This series of 3 articles will introduce basic relaying to the non-engineers in the solar and energy storage...

Protective Relays are an advanced area of electrical engineering and contracting that can be intimidating, but they don’t have to be! This series of 3 articles will introduce basic relaying to the non-engineers in the solar and energy storage...

PV connector mismatch is one of the most common solar project deficiencies. In our work as an Owner’s Engineer, Pure Power identifies mismatch connectors on roughly 25% of our clients’ projects. While PV connector mismatch is a persistent and...

Long before a system completes construction and starts its 25+ year generation life, it all starts with the design.  The design is a multiplying force where a small mistake can cause big problems and introduce risk throughout the life of the system.

By the end of 2019, Verizon will obsolete its coverage on legacy 3G networks. ATT will follow suit by 2021. The time to implement a replacement plan is now.

Why is this important for owners and financiers?

Connectivity to a site is the lifeline for...

Nowadays, it’s not uncommon to find solar panels installed by a solar independent engineer on the roof of both residential and commercial buildings. These solar panels comprise small cells referred to as photovoltaic cells. These cells are the...

As the installed capacity of solar PV systems in the US continues to scale and more geographic regions of the country achieve high penetration rates of renewables, grid congestion is becoming a high priority consideration for many large-scale...

To fund solar and energy storage projects, developers must first clear a lender’s bankability hurdle. In this context, bankability is directly related to investor confidence and the perceived risk associated with project returns. Due diligence...

Workmanship and equipment warranties are the only thing that survive the passing of guardianship as a solar asset is developed, constructed and operated. Throughout a project’s lifecycle, different stakeholders pass the hot potato of responsibility...

For IPPs that acquire solar assets after projects are developed and designed—rather than during development or design stages—there are relatively fewer opportunities to fix design problems or engage in value engineering. Nevertheless, it remains...

Independent power producers (IPPs) have different business models for solar asset acquisition. Some IPPs actively engage in development activities, such as site selection and preliminary design studies. Other IPPs look to acquire PV power systems...

When companies do not have in-house engineering—or when an independent third-party perspective is required—outsourcing is common practice. This typically involves engaging an independent engineer (IE) or an owner’s engineer (OE) for professional...

Technical due diligence is essential to solar project success in commercial, industrial and utility applications. Large PV power systems are capital-intensive expenditures with a service life of 30 years or more. If these assets do not operate...

As an Owner’s Engineer, Pure Power often supports clients by making strategic decisions about how best to repair, re-power, or optimize the performance of operational solar assets. In this role, our team of experts and engineers often relies on...

The strategic and efficient use of resources for PV system commissioning and operations and maintenance (O&M) are critical to optimizing solar PV power system revenue and profitability. Through our work as an Owner’s Engineer, Pure Power has...

At Pure Power, our project managers and engineers use photovoltaic simulation software developed by PVsyst, Folsom Labs, and the National Renewable Energy Laboratory (NREL). By having access to and experience with multiple complementary tools, we...

Technical Debtis the cost to the system owner as a result of prior decisions made to save time or money during the engineering, procurement, or installation of a solar project.

Pure Power has been helping our client’s de-risk in their assets with our Independent Engineering (IE) & Owner’s Agent services. We cover the complex technical aspects of due diligence, while you focus on the financial and management side of the...

There is a well-known business adage called the “Cost of Quality”. This is a sliding scale that says, the closer to completion a project gets, the more expensive it is to fix quality issues.

Modules can underperform for a variety of environmental and non-environmental factors. With good design and operation practices we can mitigate non-environmental factors. However, we cannot control the environment. We can only predict its behavior,...

Modules can underperform for a variety of environmental and non-environmental factors. With good design and operation practices we can mitigate non-environmental factors. However, we cannot control the environment. We can only predict its behavior,...

Torque is a commonly used term in Solar PV system inspection, which refers to the act of tightening a mechanical fastener. The fastener can cover a wide array of details, not limited to attaching structural members, electrical connection and weather...

Conducting technicaldue diligencebefore a purchase/acquisition is essential for reducing risk and operating expense.

Pure Power has been helping buyers de-risk in their asset acquisition with ourOwner’s representativeandIndependent Engineeringservices. We specialize in the technical due diligence and operation, allowing you to focus on the financial and...

Spring cleaning also applies to solar! After harsh exposure to winter’s snow, ice, and rain, systems benefit from routine inspection and maintenance. This ensures performance will be optimal as the season progresses.

A Photovoltaic (PV) System may change hands multiple times over its 20+ year operational lifespan. The buyer and seller in each transaction may view the same project or portfolio from very different perspectives. Simply put, the seller will...

Unlike conventional PV modules that convert only front-side irradiance into electrical power, bifacial modules convert both front- and back-side irradiance into electricity. While the additional rear-side irradiance improves plant performance in...

The basic goal of ASTM E2848, “Standard Test Method for Reporting Photovoltaic Non-Concentrator System Performance,” is to compare the ratio of a PV power plant’s actual in-field performance to its expected performance based on a system model. The...

In recent years, an increasing number of clients have come to Pure Power Engineering for assistance repowering legacy solar PV and energy storage systems. A fundamental goal of repowering is to replace underperforming or obsolete equipment while...

Roughly 80% of Pure Power’s customers have some level of internal engineering capabilities. Judging a book by its cover, this vast majority may seem counterintuitive. After all, why would engineering, procurement and construction (EPC) contractors...

Bifacial PV modules convert both front- and back-side irradiance into electricity. This bifacial boost improves solar project performance both in terms of yield and the levelized cost of energy (LCOE). Due to these benefits, bifacial PV modules are...

What is a "Neutral" conductor?

To an Engineer: A "neutral" is a current-carrying conductor that carries the unbalanced current in 3 phase systems, and is intentionally connected to the ground. In North America, the neutral is color-coded white or...