UL Solutions Develops New Certification Program for Solar Inverter Cybersecurity

Why It Matters

A unified cybersecurity benchmark reduces systemic risk for the rapidly expanding DER market, protecting grid stability and investor confidence. The certification gives utilities and regulators a tangible tool to enforce security expectations across diverse technologies.

Key Takeaways

• UL launches first DER cybersecurity certification
• Program aligns with UL 2941 standard
• Combines security testing with UL 1741 safety tests
• Supports manufacturers, utilities, regulators with common baseline
• Enhances grid reliability and public confidence

Pulse Analysis

The proliferation of distributed energy resources—microgrids, battery storage, hydrogen systems, and EV charging infrastructure—has reshaped the electric grid’s architecture, delivering flexibility and resilience. Yet these networked, software‑driven assets introduce new attack vectors that legacy devices were never designed to defend against. Industry stakeholders have long called for a cohesive security framework that matches the pace of DER adoption, and UL Solutions’ new certification program answers that demand by codifying best‑practice controls into a single, enforceable baseline.

At the heart of the program is UL 2941, a comprehensive standard that addresses technical safeguards such as strong authentication, encrypted communications, and robust access management, while also prescribing governance measures for data handling and documentation. By integrating this cybersecurity assessment with the well‑established UL 1741 safety testing, manufacturers can certify both safety and security in a single workflow, reducing time‑to‑market and simplifying compliance for utilities and regulators. The dual‑testing approach encourages security‑by‑design, ensuring that protective measures are embedded early rather than retrofitted after deployment.

For the market, the certification offers a clear signal of trustworthiness, helping utilities differentiate vetted products in a crowded supply chain. Investors and insurers are likely to view UL‑certified DER equipment as lower‑risk assets, potentially lowering financing costs and accelerating capital deployment. As regulatory bodies worldwide begin to mandate cyber resilience for grid‑connected devices, UL’s baseline could become a de‑facto reference, shaping future policy and driving broader industry alignment around secure, reliable energy transformation.