Every solar project begins with ambitious goals. Higher generation, better plant availability, lower operating costs and dependable long-term performance are objectives shared by every developer and EPC contractor.
Ironically, some of the biggest operational challenges that emerge after commissioning have very little to do with solar modules or inverters. They often originate within the electrical distribution system.
Electrical panels are sometimes treated as standard equipment, specified late in the project and compared primarily on commercial terms. In reality, they form the backbone of a plant’s electrical infrastructure. The quality of engineering behind them influences safety, reliability, maintainability and the overall lifecycle value of the project.
Having the right panel is important. Equally important is avoiding a few common mistakes during specification and procurement.
1. Treating Electrical Panels as a Commodity
One of the most common mistakes is assuming that all panels with similar ratings will deliver similar performance.
They don’t.
A panel is much more than its enclosure or the brands of components installed inside it. Busbar design, internal layout, cable management, protection philosophy, heat dissipation and manufacturing quality all influence how reliably it performs in real operating conditions.
Experienced EPCs rarely compare panels on component brands alone. They evaluate the engineering that brings those components together.
2. Prioritising Cost Over Lifetime Value
Price will always influence procurement decisions, but it should never become the only deciding factor.
Lower-cost panels sometimes achieve competitive pricing by compromising on engineering, manufacturing practices or component quality. While the initial saving may appear attractive, increased maintenance, premature failures and operational disruptions often outweigh the difference in purchase price.
A better question is not, “Which panel is cheaper?” It is, “Which solution offers the greatest lifecycle value?”
3. Underestimating Fault Levels
One of the most critical design inputs for any electrical panel is the prospective short-circuit current at its point of installation.
If the panel’s withstand capacity is lower than the available fault level, equipment damage and safety risks can increase considerably during fault conditions.
Accurate fault calculations should always be completed before finalising panel specifications.
4. Ignoring Site Conditions
Solar installations operate in a wide range of environments. A utility-scale solar plant in Rajasthan faces very different environmental challenges from a coastal installation in Gujarat or an industrial rooftop project in Chennai. High ambient temperatures, dust, humidity and corrosive environments all affect long-term performance.
Selecting the appropriate enclosure, ingress protection (IP rating), ventilation and corrosion protection should always reflect the actual site conditions rather than relying on a standard specification for every project.
A panel that performs reliably in one environment may not necessarily be suitable for another.
5. Overlooking Maintainability
A panel may look impressive during factory inspection, but its real test comes years later when a maintenance engineer needs to inspect, troubleshoot or replace a component.
Simple design practices such as organised wiring, clear identification, logical cable routing and adequate working space can significantly reduce maintenance time and minimise operational disruptions.
These details rarely influence the purchase decision, yet they often determine how efficiently a plant can be maintained throughout its operating life.
6. Focusing Only on Components Instead of Engineering
It is common to compare quotations based on the brands of circuit breakers or contactors.
However, panel performance depends on much more than individual components.
Busbar design, protection coordination, internal layout, wiring practices, heat management and manufacturing quality collectively determine how reliably a panel performs in real operating conditions.
Engineering quality should always be evaluated as a complete system.
7. Selecting a Supplier Instead of an Engineering Partner
Electrical panels are rarely standard products, particularly for industrial and utility-scale solar projects.
An experienced manufacturer contributes to panel design, application engineering, documentation, testing and technical support throughout the project lifecycle.
Selecting a partner with strong engineering capabilities often reduces project risks and improves long-term plant performance.
Conclusion
Many of the issues encountered in solar projects are not the result of major design failures. More often, they stem from seemingly small decisions made during equipment specification that only reveal their impact once the plant is operational.
Taking a more engineering-led approach to selecting electrical panels helps improve reliability, simplify maintenance and maximise lifecycle value. For EPC contractors, developers and industrial customers, that means fewer operational surprises and stronger long-term project performance.
At Tejshri, we believe electrical panels should do far more than distribute power. They should enhance the reliability, safety and efficiency of the entire electrical system. Our portfolio of Low Voltage Electrical Panels is engineered to meet the evolving requirements of solar, industrial and infrastructure projects, combining robust engineering, quality manufacturing and application-specific design to deliver dependable performance where it matters most.
Frequently Asked Questions
Why should electrical panel selection begin early in a solar project?
Early selection ensures that panel specifications align with fault studies, protection coordination, future expansion plans and site-specific operating conditions, reducing the need for costly design changes later.
What should EPCs evaluate beyond price?
Engineering capability, manufacturing quality, testing procedures, component selection, maintainability and technical support all influence the long-term reliability of an electrical distribution system.
Can a well-engineered electrical panel reduce lifecycle costs?
Yes. Better engineering, robust manufacturing and easier maintenance contribute to higher system availability, lower downtime and reduced operating costs throughout the life of the project.