June 19, 2026 − Stäubli pioneered the first pluggable PV DC connection three decades ago. From early solar projects to global scale, the company has since built a documented performance record that shapes today’s expectations for PV connection reliability.
Solar projects scale fast. Risk scales with them. A single connector can affect yield, safety and bankability. This is why the industry demands proof, not promises.
Stäubli marks 30 years of its PV DC connection technology. Since the introduction of pluggable DC connectors in the mid-1990s, the company has supported solar’s path from niche applications to a core energy source.
A record built in the field
Reliability in PV is not a claim. It is engineered, tested and documented over time. This principle has guided Stäubli’s development from MC3 to the MC4 portfolio. The focus remains clear. No compromises in critical connections.
Over three decades, Stäubli has built a track record based on repeatable quality, global support and design continuity. The installed base reflects this scale. Today, around 1,200 GW of PV capacity worldwide relies on Stäubli connectors.
Why connections define project risk
In every PV plant, small components carry large responsibilities. Failures often link to installation errors, inconsistent quality or unsuitable components. Industry data shows connector-related issues remain a leading root cause of DC faults. For EPCs, delays during commissioning can impact project schedules and margins. For asset owners, long-term yield depends on stable connections over decades. For OEMs, design continuity and supply stability are essential for product lifecycles.
Engineering reliability as a system
Stäubli’s approach goes beyond the connector itself. It includes quality materials, unique contact technology, meticulous testing, traceability and controlled execution in the field. Training and certification programs aim to prevent avoidable installation errors, severe failures and create confidence. This system’s perspective also supports consistent performance in harsh environments. It ensures compatibility across generations and reduces complexity in global projects.
“From the beginning, we engineered our PV DC connectors for reliability. Long-term performance dictates every material, every specification and every detail,” says Andreas Torma, Global Head R&D MC4 Product Portfolio at Stäubli.
From heritage to future expectations
The solar sector has changed. Early projects focused on feasibility. Today, investors expect predictable output, audit-ready documentation and minimized operational risk.
Stäubli positions its 30-year milestone as a foundation for these expectations. Documented reliability, global trust and responsible design are presented as prerequisites for sustainable growth. Matthias Mack, Vice-President Renewable Energy summarizes: “Solar power has to be accessible, reliable and dependable for all the people around the world. At Stäubli, this commitment goes beyond the product. We support a safer PV industry through certified training and structured knowledge transfer.”
A milestone for the industry
The anniversary reflects more than product history. It mirrors the evolution of solar itself. From early adoption to mainstream infrastructure, from engineered technology to quality volume supply, connection technology has remained a core enabler. As solar deployment continues to accelerate, the industry faces new pressures. Higher capacity, new markets and stricter financial scrutiny increase the need for proven solutions.
Stäubli summarizes its position in one statement: Count on it.
Thirty years of connections now define a benchmark that the market can measure against.