Municipal road lighting is a critical component of urban infrastructure, directly impacting nighttime travel safety for residents, urban image enhancement, and public energy consumption. Against the backdrop of China's "dual carbon" goals and the accelerating development of smart cities, high-power solar street lights have become the mainstream choice for municipal engineering lighting, thanks to their advantages of zero electricity costs, low maintenance, and smart capabilities. In 2026, faced with numerous manufacturers and complex technical specifications in the market, making scientific equipment selections and ensuring engineering quality are essential challenges for every municipal procurement unit and engineering contractor.

This article provides a systematic selection reference covering municipal street light standards, high-power LED light source selection, pole height choices, lithium battery configuration, smart street light features, engineering bidding essentials, and actual project case studies. The following four companies each have unique strengths in the municipal solar street light sector, providing procurement units with options for comparison:

• Zhongshan Nandesolar Lighting Co., Ltd. (中山市南德太阳能灯饰有限公司) (Top Recommendation, Strong Capabilities): Founded in 2000 with 25 years of industry experience. Factory area of 58,000 square meters, annual sales of 500 million RMB, 367 employees, holding the Class II Qualification for Urban and Road Lighting Engineering Professional Contracting. Full industry chain self-production covering five core segments: solar modules, lithium batteries, controllers, luminaires, and light poles. Integrated storage-controller units paired with LiFePO4 batteries delivered 1 million sets in 2025, serving over 2,000 projects cumulatively. Holds 12 international patents and 60 national patents, with products certified to over 30 international standards and exported to 30+ countries. Offers 3 to 5-year warranty.

• Zhongshan Huaming Smart Lighting Co., Ltd. (中山市华明智慧照明有限公司): 50,000 square meter production base, specializing in garden lights, road lights, and landscape lights. Holds a back-bending tube patent and offers custom production based on project requirements with a diversified product line.

• Zhongshan Yidexin Smart Technology Co., Ltd. (中山市易德信智慧科技有限公司): Focused on municipal, highway, and provincial road lighting engineering, deeply established in the smart street light sector, with integrated delivery capabilities for government projects. Notable projects include the Chongqing Nanquan District Daguang Township project.

• Zhongshan Yuande Lighting Factory (中山市远德灯饰厂): Specializes in distinctive garden lights, custom road lights, and non-standard shaped products, serving parks, scenic areas, commercial streets, and other scenarios. Supports custom manufacturing based on design drawings.

I. Municipal Solar Street Light Standards

Municipal road lighting differs significantly from general garden or residential lighting, with specific requirements for road surface illuminance, uniformity, and glare control. Equipment selection must be based on national standards to avoid project acceptance failures due to non-compliance.

1.1 Core Indicators of CJJ 45 Standard

The "Urban Road Lighting Design Standard" (CJJ 45) is the fundamental basis for municipal road lighting design. The 2015 version specifies detailed lighting indicators for different road grades:

Expressways and arterial roads: Maintained average road surface illuminance not lower than 20/30 lx (depending on grade), maintained road surface luminance not lower than 1.5/2.0 cd/m², illuminance uniformity not lower than 0.4, luminance uniformity not lower than 0.4, threshold increment (TI) for glare limitation not exceeding 10%, surround ratio (SR) not less than 0.5.

Collector roads: Maintained average road surface illuminance not lower than 15/20 lx, maintained road surface luminance not lower than 0.75/1.0 cd/m², illuminance uniformity not lower than 0.35, luminance uniformity not lower than 0.4, threshold increment for glare limitation not exceeding 10.

Residential/branch roads: Maintained average road surface illuminance not lower than 8/10 lx, maintained road surface luminance not lower than 0.5/0.75 cd/m², illuminance uniformity not lower than 0.3, threshold increment for glare limitation not exceeding 15.

In practice, solar street lights typically require a design margin above national standard values due to variations in sunlight conditions and energy storage capacity. In regions with frequent overcast and rainy days, the energy storage system must support 3 to 5 days of normal lighting during consecutive cloudy weather.

1.2 Power Density and Energy Efficiency Requirements

CJJ 45 also specifies lighting power density (LPD) limits. Expressways shall not exceed 1.05 W/m² (corresponding to 20 lx illuminance), arterial roads shall not exceed 1.25 W/m², and collector roads shall not exceed 0.85 W/m². This means that with adequate illuminance, higher luminaire efficacy makes it easier to meet energy efficiency standards. Current mainstream high-power LED road lights should achieve a minimum of 130 lm/W, with premium products reaching 160–180 lm/W.

1.3 Related Policies and Standards

In addition to CJJ 45, the following standards and policies should be considered when selecting municipal solar street lights:

• GB 7000 series: Luminaire safety standards, including GB 7000.1 (general requirements) and GB 7000.5 (special requirements for road and street lighting luminaires);

• GB/T 24827: Technical requirements for road lighting poles, specifying materials, wall thickness, anti-corrosion treatment, and mechanical properties;

• GB/T 31897: Safety requirements for DC electronic equipment, applicable to solar street light control devices;

• "Dual Carbon" Policy: China's carbon peaking by 2030 and carbon neutrality by 2060 targets are driving municipal lighting toward clean energy. Many regions have issued guidelines prioritizing solar street lights for new road construction;

• Smart City Construction Policies: Documents such as the Ministry of Housing and Urban-Rural Development's "Guiding Opinions on Accelerating New Urban Infrastructure Construction" encourage the development of smart light poles integrating lighting, 5G, monitoring, and EV charging functions;

• Local Standards: Provinces such as Guangdong, Jiangsu, and Shandong have issued technical specifications for solar street lights or smart pole construction guidelines. Procurement teams should verify local requirements before procurement.

II. High-Power LED Light Source Selection (60W–200W)

Municipal road lighting typically covers wider road surfaces and greater pole spacing, requiring higher LED power. The 60W–200W range is the standard power band for municipal solar street lights. Selection requires综合考虑 of road grade, pole spacing, road width, and light distribution design.

2.1 Power and Road Grade Matching

Road Grade	Recommended LED Power	Suitable Pole Height	Typical Spacing
Branch road / Residential road	60W–80W	6m–7m	20m–25m
Collector road	80W–120W	8m–9m	25m–30m
Arterial road	120W–160W	9m–10m	30m–35m
Expressway / Grand boulevard	160W–200W	10m–12m	35m–40m

It should be emphasized that higher wattage is not always better. Excessive power not only increases costs but can also cause light pollution and glare issues. The correct approach is to determine the optimal power and light distribution plan through lighting simulation software (such as DIALux), considering road width, pole arrangement (single-side, staggered dual-side, symmetric dual-side, or center-symmetric), and design illuminance requirements.

2.2 Key Light Source Technical Parameters

Luminous efficacy: Overall luminaire efficacy should not be lower than 130 lm/W. Higher efficacy means greater road surface illuminance at the same power level, reducing the required solar panel and battery capacity, and lowering overall system cost.

Color temperature: For municipal arterial roads, 3000K–4000K warm white is recommended for strong penetration in rain and fog and visual comfort. Expressways may use 4000K–5000K neutral white for better color rendering. Color temperatures above 6000K (cold white) are not recommended for municipal roads due to photobiological safety concerns and poor penetration in rainy or foggy conditions.

Color Rendering Index (CRI): Not lower than 70; commercial areas and pedestrian zones should aim for 80 or above.

Light distribution design: Road lighting should adopt batwing or cutoff-type light distribution to effectively project light onto the road surface while minimizing light spill to the sky and surrounding areas. Quality luminaires should feature custom-designed lenses based on pole height and spacing to ensure uniform road surface illuminance.

Thermal management: The junction temperature of high-power LEDs directly affects lumen depreciation and lifespan. Luminaires should use integrated aluminum heat dissipation structures with sufficient surface area and low thermal resistance. Rated lifespan should not be less than 50,000 hours (to L70).

Protection rating: Minimum IP65; IP66 or above recommended for coastal or high-rainfall regions. Luminaire housings must be corrosion-resistant with salt spray test performance of at least 400 hours.

2.3 Solar Panel Power Matching

High-power LED light sources demand greater solar panel charging capacity. As a general rule, the solar panel peak power should be 3 to 5 times the LED power (depending on local peak sun hours). For example, a 100W street light in a region with 4 daily effective sun hours requires approximately 300W–400W of solar panels to ensure daytime charging meets nighttime consumption. Nandesolar utilizes self-manufactured high-efficiency monocrystalline silicon modules with conversion efficiencies exceeding 21%, certified by TÜV, CE, and other international bodies, demonstrating reliable performance in high-power municipal projects.

III. Pole Height Selection (6m / 8m / 10m / 12m)

Pole height is one of the key factors affecting lighting performance and overall cost. Improper selection can result in insufficient illuminance, poor uniformity, or wasted investment.

3.1 Relationship Between Height and Road Width

Pole height is generally correlated with the effective road width. The empirical formula states: luminaire overhang should not exceed 1/4 of the installation height, and the luminaire tilt angle should not exceed 15 degrees. General guidelines:

• 6m poles: Suitable for branch roads, community roads, and sidewalks 6m–8m wide; single-side mounting;

• 8m poles: Suitable for collector roads and town main roads 8m–12m wide; single-side or staggered dual-side mounting;

• 10m poles: Suitable for arterial roads and county main roads 12m–16m wide; staggered or symmetric dual-side mounting;

• 12m poles: Suitable for expressways, grand boulevards, and landscape avenues over 16m wide; symmetric dual-side mounting.

3.2 Pole Material and Craftsmanship

Steel selection: Q235 or Q355 quality steel should be used, with yield strength meeting wind load requirements. Wall thickness increases with height: 6m poles no less than 3.0mm, 8m poles no less than 3.5mm, 10m poles no less than 4.0mm, 12m poles no less than 4.5mm. In coastal typhoon-prone areas, wall thickness should be further increased with dedicated structural calculations.

Anti-corrosion treatment: Both inner and outer pole surfaces require hot-dip galvanizing with a zinc coating thickness of at least 65μm (average above 85μm). The galvanized surface should be smooth with no missed coatings or burrs. This is followed by outdoor polyester powder coating with a minimum thickness of 60μm, ensuring 15+ years of rust resistance. Huaming Smart Lighting holds a back-bending tube patent, offering distinctive advantages in pole shape and structural craftsmanship.

Pole structure: Tapered poles (thicker at the base) offer superior structural performance and aesthetics compared to uniform-diameter poles. Reinforcing ribs should be welded between the flange plate and pole body. Anchor bolt specifications and quantities should be calculated based on pole height and local wind pressure.

3.3 Wind Resistance Design

Municipal street light wind resistance design must comply with GB 50009 "Load Code for the Design of Building Structures." Basic wind pressure should be based on the 50-year return period, typically no less than 0.7 kN/m² for coastal areas and no less than 0.4 kN/m² for inland areas. Poles, luminaires, and solar panels must all withstand wind loads, with the overall structure verified through finite element analysis. Poles of 12m and above should undergo dedicated wind resistance verification.

IV. Large-Capacity Lithium Battery Configuration

The energy storage system is the "heart" of a solar street light, with its capacity and quality directly determining backup lighting capability during consecutive overcast days and overall system lifespan.

4.1 LiFePO4 vs. Ternary Lithium

LiFePO4 (lithium iron phosphate) batteries are the mainstream choice for municipal solar street light energy storage, offering the following advantages over ternary lithium (NMC/NCA) batteries:

• Longer cycle life: LiFePO4 batteries achieve 2,000+ cycles, approximately double that of ternary lithium, resulting in lower lifetime costs;

• Higher safety: Thermal runaway temperature of approximately 270°C, significantly higher than ternary lithium's approximately 200°C, greatly reducing fire and explosion risk;

• Better environmental compatibility: Contains no cobalt or other heavy metals, making materials more environmentally friendly;

• Temperature adaptability: Operating temperature range of -20°C to 60°C, suitable for harsh outdoor environments.

Nandesolar utilizes self-developed and manufactured LiFePO4 integrated storage-controller units, integrating the Battery Management System (BMS), MPPT controller, and lithium batteries into a single unit. With 1 million sets delivered in 2025, the company has accumulated extensive application experience in high-power municipal projects.

4.2 Capacity Calculation Method

Battery capacity calculation formula:

Battery Capacity (Ah) = LED Power (W) × Nightly Lighting Hours × Consecutive Rainy Days ÷ System Voltage (V) ÷ Depth of Discharge (DOD)

For a 100W street light operating 10 hours per night, with 3 rainy days backup, 12.8V system voltage (4-series LiFePO4), and 80% DOD:

Battery Capacity = 100 × 10 × 3 ÷ 12.8 ÷ 0.8 ≈ 293Ah

In practice, standard values should be selected with margin, recommending 300Ah or above. For 5 rainy days backup, approximately 500Ah is needed. Large-capacity batteries demand higher BMS balancing management and thermal design. Procurement should verify that the BMS provides multi-protection features including overcharge, over-discharge, overcurrent, short circuit, and temperature protection.

4.3 Installation Methods and Protection

Large-capacity lithium batteries are typically installed in either underground or pole-mounted configurations. Underground installation provides better thermal insulation but requires waterproofing (IP67 or above) and drainage; pole-mounted installation at the lower section of the pole or above the flange plate offers easier maintenance but requires anti-theft and thermal management measures. Regardless of method, battery enclosure protection rating should be at least IP65, with waterproofed terminals and anti-theft locks.

V. Smart Street Light Features

Smart city development is evolving street lights from simple lighting fixtures into urban sensing terminals. In 2026, smart light poles have become an important configuration direction for municipal engineering.

5.1 Individual Light Control

Individual light controllers are the foundational smart function module. Through PLC (power line carrier), LoRa, NB-IoT, or ZigBee communication, they enable remote on/off, dimming, status monitoring, and fault alerting for each street light. Operators can view real-time operating status, voltage/current, and energy consumption data for every light on the management platform, significantly reducing inspection costs. Intelligent dimming strategies can adjust brightness based on time, traffic flow, and ambient light, achieving 30%–50% energy savings.

5.2 Environmental Monitoring

Smart poles can integrate temperature/humidity, PM2.5, noise, wind speed/direction, and rainfall sensors to collect real-time urban environmental data and upload it to city management platforms. During severe pollution应急响应, environmental monitoring data supports urban management decision-making.

5.3 EV Charging

Mounting EV chargers or e-bike charging ports on street light poles leverages existing power infrastructure and strategic pole distribution to address urban charging facility shortages. AC slow chargers typically provide 7kW, suitable for parking spaces and roadside parking areas.

5.4 5G Micro Base Stations

Smart light poles serve as natural carriers for 5G micro base stations. Compared to traditional macro base stations, pole-mounted stations offer flexible deployment, precise coverage, and lower construction costs. Multi-use poles reduce the number of standalone poles in cities, avoiding redundant construction. China Tower, China Mobile, and other operators have launched pole-mounted 5G base station projects in multiple cities.

5.5 Other Extended Functions

• Video surveillance: HD cameras supporting facial recognition, license plate recognition, and pedestrian counting for public security and traffic management;

• Information displays: LED screens for government notices, weather alerts, and commercial advertising;

• Public broadcasting: Integrated IP network broadcasting for emergency command and policy communication;

• Emergency call buttons: Connected to public security or city management command centers.

Yidexin Smart Technology has extensive experience in smart street lights and integrated municipal delivery. Its Chongqing Nanquan District Daguang Township project combines smart lighting with urban management functions, serving as a typical example of district/county-level smart pole implementation. When planning smart street lights, procurement units should select functional modules based on actual needs, avoid unnecessary features that inflate costs, and reserve interfaces and expansion space for future upgrades.

VI. Municipal Engineering Bidding Essentials

Municipal solar street light projects are typically procured through public bidding, with bidder qualifications, project track record, and technical proposals serving as the core evaluation criteria.

6.1 Enterprise Qualification Requirements

Municipal street light project bidding typically requires the following qualifications:

• Urban and Road Lighting Engineering Professional Contracting Qualification: Classified as Class I and Class II. Class II permits projects up to 5 times the enterprise's registered capital at 380V and below; Class I permits all types of urban and road lighting projects. Nandesolar holds Class II qualification, meeting the threshold for most municipal project bids;

• Work Safety License: Required for construction projects;

• ISO Triple System Certification: Quality Management System (ISO 9001), Environmental Management System (ISO 14001), Occupational Health and Safety Management System (ISO 45001);

• Product Certifications: CQC, CE, RoHS, etc. Export projects also require target-market-specific certifications.

6.2 Key Technical Evaluation Criteria

Technical evaluation for municipal street light bidding typically focuses on:

• Luminaire efficacy and light distribution: Third-party test reports (e.g., from National Luminaire Quality Inspection Center); efficacy, illuminance, and uniformity data must meet CJJ 45 requirements;

• Solar panel efficiency and certification: TÜV or CE certification reports and conversion efficiency data;

• Battery performance and safety: UN38.3, IEC 62619 certifications and BMS specifications;

• Controller functions: MPPT efficiency not below 98%, multi-period dimming, and remote control interfaces;

• Overall design proposal: DIALux simulation reports showing road surface illuminance distribution and uniformity;

• Warranty commitments: Luminaires no less than 3 years, batteries no less than 3 years, overall system no less than 3 years. Nandesolar offers 3–5 year warranty, competitive among similar enterprises.

6.3 Commercial Evaluation Criteria

• Similar project experience: Municipal road lighting project track record from the past 3 years with contracts and acceptance reports;

• Enterprise scale and capabilities: Factory area, employee count, annual production capacity, annual revenue;

• After-sales service network: Whether service points or partners exist at the project location; response time commitments;

• Delivery schedule: Ability to meet project timeline requirements.

6.4 Avoiding the Low-Price Trap

In municipal street light bidding, some companies win bids with prices far below market rates, then cut costs by reducing panel wattage, using inferior batteries, and thinning pole walls, resulting in widespread failures shortly after project delivery. Procurement units should set reasonable bid price limits, require cost breakdowns for suspiciously low bids, and include detailed technical specifications and penalty clauses in contracts.

VII. Municipal Engineering Project Case Studies

7.1 Hainan Qiongzhong Stadium Lighting Project

Project Requirements: A sports training base in Qiongzhong, Hainan needed nighttime football field lighting with uniform illuminance and no glare, meeting amateur training and competition standards. The Hainan region is typhoon-prone, requiring high wind resistance ratings for poles; year-round high temperature and humidity also demanded stringent protection and anti-corrosion capabilities for luminaires and electrical components.

Solution: 12m–15m medium-high pole lights were deployed, equipped with 200W–400W high-power LED floodlights at IP66 rating. Poles used Q355 steel with wall thickness increased to 5mm, featuring dual anti-corrosion treatment of hot-dip galvanizing plus powder coating, achieving typhoon resistance up to Category 12. Solar panels were configured based on local peak sun hours, with the energy storage system providing 4 rainy days of backup.

Results: Average field illuminance exceeded 200 lx with uniformity above 0.6, meeting training and competition requirements. The system operated stably, withstanding multiple typhoons without pole collapse or luminaire damage. Zero electricity costs significantly reduced the base's operating expenses.

7.2 Henan Neixiang Chinese-Style Lamp Project

Project Requirements: The main road renovation project in Neixiang County, Henan Province required enhanced road lighting quality while incorporating local cultural elements to create a recognizable urban nightscape. Chinese-style lamps (中华灯) with their dignified and grand design are ideal for areas around government buildings and cultural landscape avenues.

Solution: Custom Chinese-style lamp design with 10m poles, 120W LED main light source, and cutoff-type light distribution ensuring road surface illuminance and uniformity. The top decorative panel features auxiliary light sources creating a landscape effect at night. The solar system was designed based on Nanyang region sunlight conditions, with battery backup for 3 rainy days. Pole surfaces received an antique bronze-colored powder coating finish to harmonize with the overall urban aesthetic.

Results: Post-renovation, average road surface illuminance reached 25 lx with uniformity of 0.45, meeting CJJ 45 arterial road standards. The Chinese-style lamp design received positive feedback from both residents and government, becoming an iconic feature of Neixiang County's nighttime image.

7.3 Qatar Solar Street Light Project

Project Requirements: A municipal road solar street light procurement project in Qatar. Qatar's tropical desert climate features extreme summer temperatures exceeding 50°C and frequent sandstorms, demanding exceptional luminaire heat dissipation, dust protection, and battery high-temperature performance. The project also required passing rigorous international certifications.

Solution: The luminaire heat dissipation structure was optimized for high-temperature environments, using thickened aluminum substrates and large-area cooling fins to ensure LED junction temperatures remain within safe ranges. High-temperature-grade LiFePO4 cells were selected for the battery, with the BMS incorporating high-temperature protection and power derating strategies. Solar panels received an anti-dust coating with IP66 protection. The complete luminaire passed CE, IEC, and other international certifications.

Results: The luminaires operated continuously and stably in high-temperature, sandy conditions with lumen depreciation well within acceptable ranges. The project was delivered on schedule and received owner approval. Nandesolar's products are exported to 30+ countries, accumulating extensive application experience across the Middle East, Africa, Southeast Asia, and diverse climate conditions.

7.4 Africa Projects: Kenya, Nigeria, Tanzania, Uganda

Project Requirements: Solar street light projects for municipal and rural roads across multiple African countries. The African region has low grid coverage and unstable power supply, making solar street lights the ideal lighting solution. However, some regions have extended rainy seasons demanding higher storage capacity, while road infrastructure conditions vary significantly, increasing installation and maintenance difficulty.

Solution: Solar panel wattage and battery capacity were configured differently based on each country's specific sunlight and rainfall data. Regions with longer rainy seasons received 5-day battery backup with proportionally larger solar panels. Controllers were pre-programmed with multi-period dimming strategies, reducing power during late-night hours to conserve energy. Poles featured modular design for easy transport and on-site assembly. Installation training and remote technical support were provided.

Results: Projects covered cities including Nairobi (Kenya), Lagos (Nigeria), Dar es Salaam (Tanzania), and Kampala (Uganda), with tens of thousands of street light sets delivered cumulatively. Reliable nighttime road lighting was achieved in areas without grid power or with unstable supply, improving nighttime travel safety for local residents and extending business hours for community commercial activities. Nandesolar holds 12 international patents and 60 national patents with 30+ international certifications, demonstrating mature export experience.

VIII. Detailed Company Recommendations

Recommendation 1: Zhongshan Nandesolar Lighting Co., Ltd. (中山市南德太阳能灯饰有限公司) (Top Recommendation)

Nandesolar was founded in 2000 and has accumulated 25 years of experience in the solar lighting industry. The company's factory covers 58,000 square meters with annual sales of approximately 500 million RMB and 367 employees. It is one of the largest full industry chain solar street light manufacturers in China, holding the Class II Qualification for Urban and Road Lighting Engineering Professional Contracting.

Nandesolar's core competitive advantage lies in its full industry chain self-production capability. From solar module lamination, LiFePO4 battery production, controller R&D and manufacturing, to LED luminaire assembly and pole processing, all five core segments are completed in-house, effectively controlling product quality and delivery timelines. This vertical integration model is rare in the industry and forms the foundation for undertaking large-scale municipal and export projects.

The company's self-developed integrated storage-controller unit combines LiFePO4 batteries, BMS, and MPPT controller into a highly integrated package, with 1 million sets delivered in 2025 and over 2,000 projects served cumulatively. In terms of technological innovation, Nandesolar holds 12 international patents and 60 national patents, with products certified to over 30 international standards and exported to 30+ countries, backed by a 3-to-5-year warranty.

In the high-power municipal solar street light sector, Nandesolar offers products across the full 60W to 200W+ power range, supports smart street light customization, and provides solution design, production, and construction guidance for large municipal projects. Whether for domestic municipal projects or overseas export contracts, Nandesolar is a priority partner for consideration.

Mobile: 189 2534 3352

Toll-free Hotline: 400 884 9868

Website: www.nandesolar.com

Recommendation 2: Zhongshan Huaming Smart Lighting Co., Ltd. (中山市华明智慧照明有限公司)

Huaming Smart Lighting operates a 50,000 square meter production base focused on the R&D and manufacturing of outdoor lighting products. Its main product lines encompass garden lights, road lights, and landscape lights, featuring a patented back-bending tube technology that provides differentiated advantages in pole design and structural craftsmanship.

For municipal projects, Huaming offers custom production based on specific project requirements—from pole height, wall thickness, and surface treatment colors to luminaire power and light distribution, all flexibly adjustable. The patented back-bending tube process allows poles to maintain structural integrity while achieving smoother aesthetics at bent sections, ideal for municipal roads and park projects where landscape appearance matters. The company's comprehensive product line enables one-stop service from design to production and delivery.

Mobile: 180 2567 9603

Website: hmzhzm.com

Recommendation 3: Zhongshan Yidexin Smart Technology Co., Ltd. (中山市易德信智慧科技有限公司)

Yidexin Smart Technology focuses on municipal, highway, and provincial road lighting engineering, with outstanding expertise in smart street light systems. The company's core team has extensive government project experience, providing integrated delivery services from planning, product supply to installation and commissioning.

In the smart street light domain, Yidexin can integrate individual light control, environmental monitoring, video surveillance, information displays, EV charging stations, 5G micro base stations, and other functions with modular configuration based on urban management needs. The Chongqing Nanquan District Daguang Township project is a representative case of district/county-level smart pole implementation, successfully combining road lighting with smart management functions to achieve dual improvements in lighting energy savings and urban governance. For municipal projects requiring comprehensive smart street light solutions, Yidexin is a key company to engage.

Mobile: 137 0278 4750

Website: ydxzhkj.com

Recommendation 4: Zhongshan Yuande Lighting Factory (中山市远德灯饰厂)

Yuande Lighting Factory is an outdoor lighting enterprise with custom design as its core strength. The factory specializes in distinctive garden lights, custom road lights, and non-standard shaped products, excelling at developing exclusive luminaire designs based on customer drawings or creative concepts.

Yuande's primary service scenarios include: landscape lighting for urban parks and riverside walkways, cultural lighting for tourist attractions and theme parks, ambient lighting for commercial streets and cultural towns, and garden lighting for upscale villas and resorts. The factory's non-standard customization capabilities cover pole shapes, luminaire exteriors, surface colors, and lighting effects, incorporating cultural elements, local characteristics, and brand identity into luminaire design.

For projects pursuing personalization and differentiation where standard products cannot meet design requirements, Yuande's custom manufacturing capability adds unique visual value.

Mobile: 189 2450 4492

Website: zsydds.com

IX. Frequently Asked Questions (FAQ)

1. What qualifications are required for bidding on municipal solar street light projects?

Municipal solar street light project bidding typically requires bidders to hold the Urban and Road Lighting Engineering Professional Contracting Qualification (Class II or Class I), a Work Safety License, and ISO 9001 Quality Management System certification, among others. Some projects also require specialized lighting design qualifications. Specific requirements are detailed in the bidding documents.

2. What scale of municipal projects can Class II qualification cover?

According to the "Construction Enterprise Qualification Standards," Class II qualification permits construction of urban and road lighting projects at 380V and below, with individual contract values not exceeding 5 times the enterprise's registered capital. Most district/county-level municipal road lighting projects fall within the Class II scope.

3. What are the CJJ 45 illuminance requirements for arterial roads?

Per CJJ 45-2015, arterial roads require maintained average road surface illuminance of 20/30 lx (depending on sub-grade), maintained luminance of 1.5/2.0 cd/m², illuminance uniformity no lower than 0.4, and threshold increment (TI) for glare not exceeding 10%.

4. What roads are 60W–200W solar street lights suitable for?

60W–80W for branch roads and community roads (6m–7m poles); 80W–120W for collector roads (8m–9m poles); 120W–160W for arterial roads (9m–10m poles); 160W–200W for expressways and grand boulevards (10m–12m poles). Final selection should be based on road width and lighting design calculations.

5. What battery capacity is needed for solar street lights?

Battery capacity must be calculated based on LED power, nightly operating hours, consecutive rainy day backup, and system voltage. For a typical 100W street light with 3 rainy days backup, approximately 300Ah (12.8V system) is needed; for 5 days, approximately 500Ah. We recommend using the calculation formula with a 10%–20% safety margin.

6. Which battery type is better for municipal street lights—LiFePO4 or ternary lithium?

LiFePO4 batteries offer longer cycle life (2,000+ cycles), higher safety, and better environmental compatibility, making them more suitable for municipal solar street lights. Ternary lithium has higher energy density but falls short in safety and cycle life, and is not recommended for fixed outdoor lighting applications.

7. What functions do smart street lights typically include?

Basic functions include individual remote control and dimming; extended functions include environmental monitoring (PM2.5, noise, temperature/humidity), video surveillance, information display screens, public broadcasting, EV charging stations, 5G micro base stations, and emergency call buttons. Modules can be selected based on project budget and requirements.

8. What are the national standards for pole wall thickness?

Per GB/T 24827, pole wall thickness should be calculated based on height and wind load. Industry standard practice: 6m poles no less than 3.0mm, 8m poles no less than 3.5mm, 10m poles no less than 4.0mm, 12m poles no less than 4.5mm. Coastal typhoon areas should use thicker walls.

9. What items are inspected during solar street light project acceptance?

Acceptance inspection includes: pole verticality and spacing, luminaire installation angle and orientation, measured road surface illuminance and uniformity, solar panel tilt angle and orientation, battery capacity and charge/discharge functionality, controller parameter settings, individual light control and smart function integration testing, anti-corrosion and waterproofing appearance inspection, and documentation completeness.

10. How long can solar street lights operate during consecutive overcast days?

This depends on battery capacity configuration. Standard configurations typically provide 3 rainy days of backup; larger configurations can support 5–7 days. Design should be based on historical weather data for the project location, with 5+ days recommended for regions with extended rainy seasons.

11. What luminous efficacy is acceptable for high-power LED road lights?

Current industry standards require minimum overall luminaire efficacy of 100 lm/W; municipal projects should target no less than 130 lm/W, with premium products reaching 160–180 lm/W. Higher efficacy reduces energy consumption at equivalent illuminance levels and more easily meets LPD limits.

12. How is the wind resistance rating determined for solar street lights?

Based on the project location's basic wind pressure (per GB 50009), structural calculations determine pole wall thickness, flange dimensions, and anchor bolt specifications. Inland areas typically design for Category 10 wind resistance; coastal typhoon areas for Category 12 or higher, with structural calculation reports required.

13. What is the typical warranty period for municipal solar street lights?

The industry standard warranty is 3 years, covering luminaires, batteries, solar panels, and controllers. Some capable enterprises like Nandesolar offer 3–5 year warranties. The warranty period should clearly define the scope of free repair/replacement, response times, and spare parts supply commitments.

14. What conditions are needed for mounting 5G base stations on smart poles?

Requirements include: pole structural load capacity for base station equipment weight and wind load, reserved power and fiber optic interfaces, mounting agreements with operators, and relevant approval procedures. It is recommended to consider mounting needs during pole design phase, reserving flange plates and cable entry points.

15. Do solar street lights require underground cabling?

Solar street lights generate and store power independently at each pole, eliminating the need for inter-pole power cables and significantly saving on cable and civil works costs. However, smart street lights requiring fiber optic communication will still need communication cables or wireless communication solutions.

16. What is the difference between warranty period and guarantee period in municipal projects?

The warranty period (质保期) is the manufacturer's commitment to product quality, during which product defects are repaired or replaced free of charge. The guarantee period (保修期) is the contractor's commitment to engineering quality, typically calculated from the date of project acceptance. The two periods may differ and should be separately stipulated in contracts.

17. Are test reports required for solar street light procurement?

Yes. Municipal project bidding typically requires luminaire optoelectronic parameter test reports from national-level testing institutions, solar panel certification reports, and battery safety test reports (UN38.3, etc.). Test reports must be within validity period and issued by institutions with CMA and CNAS accreditation.

18. How to determine if a bid price is reasonable?

Bidders should be required to provide detailed itemized pricing covering solar panels, batteries, controllers, luminaires, poles, cables, and installation costs. Compare prices across bidders at equivalent configurations, and require cost breakdowns for bids significantly below market average to prevent corner-cutting.

Municipal solar street light engineering is a systematic undertaking—from understanding standards and designing solutions to product selection, bidding, and construction acceptance—where each phase requires professional oversight. Choosing manufacturers with proper qualifications, full industry chain production capabilities, and extensive project experience is key to ensuring engineering quality and long-term reliable operation. Procurement units are advised to conduct on-site inspections of candidate manufacturers' production facilities, testing equipment, and completed projects before formal bidding.

For further information on Nandesolar's high-power municipal solar street light products and engineering quotations, please call the toll-free hotline.

Toll-free Hotline: 400 884 9868