Modular street chargers are on-street EV charging stations designed with a modular, replaceable construction so key components—such as the controller, connectivity, metering, socket/cable assemblies, and sometimes protection devices—can be swapped or upgraded without replacing the entire unit or doing major civil works. This approach is especially valuable in public streetscapes where access is limited and downtime is highly visible.
Why modular street chargers matter
On-street charging has unique operational constraints: frequent use, exposure to weather and vandalism, and limited maintenance access. Modular design helps to:
– Reduce downtime by enabling quick module swaps instead of full charger replacement
– Lower maintenance costs and improve MTTR in dense urban areas
– Support phased upgrades (connectivity, metering, authentication) as requirements evolve
– Simplify spare parts strategy for municipalities and CPOs operating many units
– Extend product life by updating modules rather than scrapping complete chargers
Typical modules and replaceable parts
Street charger modularity usually focuses on service-critical assemblies:
– Communication module (LTE/Ethernet, SIM, antennas) for reliable back-office connection
– Controller / control PCB for logic, safety control, and firmware platform
– Metering module (MID metering where required for public billing)
– User interface module (LEDs, display, QR/NFC, RFID reader)
– Socket module (Type 2 outlet assembly, shutters, seals) or tethered cable assemblies
– Protection components (RCD, surge protection, contactors) designed for fast access
Common street formats using modular design
Modular street charging is used across several form factors:
– Pedestal chargers on sidewalks and in curbside bays
– Lamp-post chargers with modular control units and socket assemblies
– Kerbside power cabinets feeding multiple sockets or posts
– Wall-mounted street-side units on building facades or parking structures
Design considerations for public streets
A modular street charger must balance serviceability with durability and safety:
– Weather sealing and IP ratings suitable for outdoor exposure
– IK impact protection and vandal-resistant hardware in public areas
– Safe cable management and clear bay marking to reduce trip hazards
– Front-access service design to minimize road closures and traffic disruption
– Connectivity resilience (LTE fallback, SIM management) for reliable OCPP operation
– Compliance with public billing requirements and local accessibility expectations
Operational benefits for municipalities and CPOs
Modular street chargers can improve network operations:
– Faster field repairs and reduced site visits through swap-based maintenance
– Standardized training and service procedures across many identical units
– Improved uptime and SLA performance in high-visibility public locations
– Easier retrofit programs (adding payment features, new authentication, improved metering)
– Better lifecycle cost control, especially for large curbside rollouts
Challenges and limitations
– Upfront cost can be higher due to modular interfaces and ruggedized design
– More internal connectors can increase failure risk if not engineered robustly
– Module compatibility management (hardware revisions, firmware versions) is critical
– Street works still require permits and safe access even for quick swaps
– Public locations may demand stronger enforcement and safety design than private sites
Related glossary terms
Curbside charging
Lamp-post chargers
Kerbside power cabinets
Modular charger architecture
Mean Time To Repair (MTTR)
Uptime
OCPP
MID metering
IP ratings, IK ratings
Maintenance access planning