Technical due diligence is a critical component for the success of solar projects across commercial, industrial, and utility-scale applications. Large photovoltaic (PV) systems represent significant capital investments with lifespans exceeding 30 years. If these systems fail to operate reliably or deliver expected performance, project financiers, owners, and developers risk reduced returns on their investment.
Mitigating risks over the long-term operation of a PV system goes far beyond meeting basic code requirements. As a consulting engineer working with project owners and lenders, Pure Power has reviewed numerous underperforming or troubled solar assets that met only the minimum legal standards. These experiences have shown us that code compliance is not the end goal—it's just the starting line. True success requires going beyond compliance to ensure quality, reliability, and long-term performance.
**Understanding Code Compliance**
Like any electrical or structural system, PV installations must adhere to specific codes such as the National Electrical Code (NEC) or the International Building Code (IBC). Meeting these standards is essential for permits, inspections, and limiting liability. However, compliance alone does not guarantee efficiency, durability, or ease of maintenance.
Codes are essentially a reflection of past failures—especially those that have led to loss of life, property damage, or large insurance claims. They are developed by volunteer committees of experts who aim to prevent catastrophic events. But they do not cover all aspects of system performance, serviceability, or longevity. The NEC itself states:
> “The purpose of this Code is the practical safeguarding of persons and property from hazards arising from the use of electricity.â€
And further clarifies:
> “Compliance with this Code and proper maintenance result in an installation that is essentially free from hazard but not necessarily efficient, convenient, or adequate for good service.â€
This distinction is crucial. To achieve a strong return on investment, a PV plant must be efficient, easy to maintain, and built to last.
**Variations Between Code Editions**
It’s also important to note that code development often lags behind technological advancements. While new editions of the NEC and IBC are released every three years, adoption at the state or local level varies widely. Some jurisdictions adopt the latest versions quickly, while others may still enforce outdated codes. This can create inconsistencies in safety and performance expectations.
In some cases, the gap between code updates and equipment innovation may even restrict the use of the most advanced technologies. Therefore, relying solely on code compliance may not always ensure a truly safe or effective system.
**Understanding Best Practices**
Best practices go beyond legal requirements and are based on proven methods, materials, and experience. They help stakeholders make informed decisions about efficiency, reliability, and long-term performance. While best practices may vary depending on organizational goals—whether short-term or long-term—they often provide universal value.
**Performance Matters**
If a PV system isn’t operating efficiently or is frequently unavailable, it won’t deliver the expected financial returns. Simply meeting code requirements doesn’t protect against design flaws, installation errors, or equipment failures. For example, improper inverter placement in high-temperature environments can lead to power derating or tripping issues. Proper design and placement, guided by best practices, can significantly reduce such risks.
**Climate and Location Matter**
PV systems must be designed to withstand local environmental conditions—such as seismic activity, coastal winds, snow loads, or extreme heat. Code-compliant designs may not be sufficient to handle predictable weather events. An engineering report from the Structural Engineers Association of California notes that:
> “Structural failure of utility-scale PV plants are rare, but some failures have been observed in code-compliant structures.â€
While no system can be fully protected from extreme weather, best practices improve resilience and long-term performance.
**Installation and O&M Matter**
A poorly designed system that’s hard to install or maintain can lead to higher costs and lower efficiency. For instance, spreading inverters across a large area increases service time and complexity. Best practices suggest grouping inverters into clusters to improve accessibility and reduce downtime.
Simple design adjustments—like flexible conduit routing—can save time and money during operations. These small changes, when applied consistently, contribute to the long-term success of your solar and energy storage systems.
At Pure Power, we bring deep expertise and real-world experience to every project. Our approach ensures that your systems are not only compliant, but also safe, reliable, efficient, and profitable for decades to come.
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