New standards and tools set pace for secure, scalable EV charging

The introduction of UL 1741 Supplement SC in mid-2026 marks a pivotal advancement for AC bidirectional vehicle-to-grid (V2G) interoperability, enabling certification without the need to approve specific vehicle-charger pairs. This scalable and cost-effective approach is crucial for utilities and regulators aiming to support widespread V2G adoption, as it aligns with SAE J3072 onboard inverter standards to foster a more interconnected and flexible energy ecosystem.

By mid-2026, the UK EV charging standards landscape had become notably dynamic, compelling manufacturers like Versinetic to adopt proactive compliance strategies to avoid costly redesigns. Their 2026 UK EV Charging Standards Guide and Interactive Audit Tool exemplify this shift by enabling hardware, firmware, and cybersecurity self-assessments that anticipate evolving mandates such as the impending 2027 ISO 15118-20 requirement, which demands significant hardware integration including Power Line Communication and dedicated cryptographic processors beyond mere software updates.

To future-proof interoperability and smart charging capabilities, manufacturers are advised to implement modular software architectures supporting dual-stack OCPP 2.1 alongside legacy OCPP 1.6, ensuring backward compatibility across diverse charging networks. Concurrently, cybersecurity has emerged as a foundational pillar, with best practices now encompassing secure boot processes, digitally signed firmware with rollback protection, and adherence to IoT security standards like ETSI EN 303 645, reflecting a holistic approach to safeguarding EV charging infrastructure.

Tools like Versinetic’s interactive audit guide are transitioning from compliance checklists to strategic roadmaps, helping engineering teams systematically identify and close gaps related to standards such as ISO 15118 for Plug & Charge and OCPP 2.1 for smart grid interaction. As managing director Dunstan Power notes, this proactive approach not only reduces program risk but also accelerates product readiness in an increasingly complex regulatory environment.

Chroma’s 8000 EV & EVSE test system stands out as a comprehensive solution for manufacturers aiming to validate compliance with the evolving ISO 15118 standards, covering both the earlier ISO 15118-2 and the more advanced ISO 15118-20 protocols. This dual support ensures robust interoperability and seamless communication across generations of EV charging equipment, addressing the critical need for future-proofing in a rapidly advancing market. By integrating support for cutting-edge features like Plug & Charge, wireless and bidirectional power transfer, and enhanced security protocols such as TLS 1.3, Chroma’s platform not only validates current compliance but also anticipates emerging industry demands, securing reliable and secure charging performance well into the future.

Beyond protocol compliance, Chroma’s 8000 test system tackles the increasing hardware and software complexities inherent in modern EV charging infrastructure. Its capability for simultaneous multi-connector testing and liquid-cooled high-current charging simulations reflects a nuanced understanding of real-world operational challenges, including thermal management and high power throughput. Coupled with features like power source/load switching and real-time data analysis with session playback, this platform empowers manufacturers to conduct exhaustive validations under diverse scenarios, ensuring not only compliance but also the robustness and reliability of their EVSE products in dynamic charging environments.

The interconnected nature of EV systems, where multiple vendors supply hardware and software components—from battery management systems to vehicle central computers—creates a complex web of accountability that complicates cybersecurity efforts. This multi-vendor ecosystem not only increases the risk of unauthorized access but also blurs responsibility when breaches occur, as highlighted by the challenge of pinpointing liability when a malicious actor interferes with vehicle functions. Regulatory attempts like India’s AIS-189 and AIS-190, inspired by UN regulations R155 and R156, represent important strides toward securing vehicle software and updates; however, these frameworks currently exclude vulnerable segments such as small two- and three-wheelers, including e-rickshaws, which often rely on fragmented supply chains and independent workshops lacking diagnostic tools, leaving significant security gaps unaddressed.

While EV connectivity unlocks valuable capabilities like remote monitoring and over-the-air updates, it simultaneously opens new attack vectors that can be exploited to manipulate critical vehicle functions maliciously. The infamous e-rickshaw incident underscored this vulnerability, where unauthorized phone connections effectively turned the vehicle into a 'killswitch,' controlling everything from dashboard displays to ride modes and charging behavior. This dual-edged nature of connectivity demands robust cybersecurity measures embedded directly into both software and hardware layers to prevent such exploits and safeguard user safety.

The long-term sustainability of EV software presents a unique challenge distinct from traditional mechanical repairs, as software issues often require specialized diagnostic tools unavailable to most independent workshops. This dependency on manufacturer support means that if a software provider ceases operations or discontinues updates, critical features may abruptly stop functioning, leaving owners stranded with limited recourse. This shift underscores the urgent need for standardized, accessible maintenance protocols and greater transparency in software lifecycle management to ensure EV reliability and consumer trust over time.

Future-proofing EV fleet charging infrastructure hinges on a strategic, multifaceted approach that aligns closely with the fleet operator’s long-term growth and operational goals. As emphasized in a 2026 explainer on scalability, understanding where a fleet aims to be in five to ten years—whether expanding vehicle numbers or geographic locations—is critical to designing adaptable solutions that accommodate increased charger capacity, load sharing, and physical infrastructure readiness. This includes proactive coordination with Independent Distribution Network Operators (IDNOs) and Distribution Network Operators (DNOs) to plan grid capacity upgrades and integrate battery storage, ensuring the electrical backbone can support fleet expansion from, for example, 100 to 120 vehicles within a couple of years.

Modular infrastructure design is a cornerstone of future-proofing, where installing extra ducting and charger bases during initial construction can significantly ease the addition of new chargers down the line. This approach, highlighted in the same 2026 explainer, leverages the opportunity presented when groundworks are already underway to embed scalability into the physical site, enabling seamless expansion without costly retrofits. Such foresight in groundwork not only reduces future disruption but also aligns with the evolving needs of growing EV fleets and emerging advanced charging capabilities.

On the software front, Versinetic’s 2026 analysis underscores the importance of a staged migration from OCPP 1.6 to 2.1, facilitated by a modular software architecture that decouples protocol logic from core application functions. This strategy allows manufacturers to maintain stable legacy systems while selectively deploying OCPP 2.x where its benefits justify the upgrade, thereby reducing engineering complexity and mitigating interoperability risks. Silva of Versinetic advises that migration decisions should be driven by business priorities and customer needs rather than chasing the latest protocol version, cautioning against common pitfalls such as treating OCPP 2.x as a full platform rewrite or embedding protocol logic deeply within firmware.

Heliox, a Siemens business, has engineered the VersiCharge Blue™ 80A charger specifically to meet the rigorous demands of fleet and commercial EV operations by delivering a robust 80A AC (19.2 kW) power output that significantly reduces vehicle downtime. This Level 2 charger, equipped with a J1772 connector, not only complies with Buy America and ENERGY STAR certifications but also incorporates multiple safety and enterprise-grade security standards, ensuring reliability and regulatory adherence in commercial environments.

The VersiCharge Blue™ 80A stands out for its advanced connectivity and future-proofing features, including cellular and Wi-Fi remote monitoring capabilities, support for ISO15118-2 and OCPP 1.6J protocols, and over-the-air software updates. These smart charging functionalities enable fleet operators to optimize energy use and maintain up-to-date software seamlessly, positioning the charger as a scalable solution adaptable to evolving commercial electrification needs.