Smart Street Light Retrofit: Cost Breakdown IoT
Total smart street light retrofit cost = per-lamp controllers + concentrators/gateways + platform software + installation + maintenance. Per-lamp controllers make up 60-70% of hardware cost. For a 1000-lamp project, expect roughly 100-300 RMB per lamp including installation (excluding luminaire replacement), with payback typically within 2-3 years.
Hardware: Controllers and Gateways Per-lamp controllers (NEMA or Zhaga) are the core hardware; 4G versions cost more than LoRa. Concentrators (CCU) add about 10-30 RMB per lamp when amortized. Volume purchases (1000+ lamps) typically earn 10-20% tiered discounts. Gateway count drives cost: roughly one gateway per 500-1000 nodes in LoRa deployments.
Software and Platform Cost Platform options include on-premise licenses (one-time) and SaaS subscriptions (about 10-30 RMB per lamp per year). Open-source platforms (e.g., ThingsBoard) cut software cost but require in-house operations. A self-developed platform (e.g., CACloud) is usually bundled into the overall solution.
Installation and Maintenance Cost Installation runs about 20-80 RMB per lamp depending on pole height and site conditions; ongoing maintenance adds about 10-20 RMB per lamp per year (inspection and fault handling). Wireless options (LoRa/4G) need no extra cabling and significantly cut construction cost.
Scale Effects and Payback The larger the project, the lower the per-lamp cost: projects under 500 lamps get limited discounts; 1000-5000 lamp projects cut total cost by 15-25%. With average energy savings of 30-50%, most projects pay back in 2-3 years.
Cost Optimization Tips Prefer cable-free wireless solutions; buy centrally and roll out in phases; choose devices with remote OTA upgrades to reduce on-site maintenance; negotiate turnkey pricing including training and warranty.