All-in-One Solar Street Light Complete Guide 2026: Structure, Working Principle, Pros & Cons

As global carbon neutrality accelerates and smart city construction deepens, solar street lights have become one of the fastest-growing segments in the outdoor lighting industry. Industry data shows that the global solar street light market exceeded $12 billion in 2025 and is expected to grow at a CAGR of 15% annually through 2030. Among various technology approaches, all-in-one solar street lights - with their integrated design, easy installation, and smart management - are gradually replacing traditional split-type solar street lights as the preferred solution for road lighting, industrial parks, and new rural construction.

So what exactly is an all-in-one solar street light? How does its internal structure work? What are its advantages and limitations compared to traditional street lights? And how should you select, install, and maintain them? This article provides a comprehensive analysis of all aspects of all-in-one solar street lights, combined with CHZ Lighting's IST series products, to give you professional reference for your procurement decisions.

1. What Is an All-in-One Solar Street Light?

1.1 Definition and Core Features

An all-in-one solar street light (also called integrated solar street light) is a new type of outdoor lighting product that integrates four core components - the solar PV panel, energy storage battery, smart controller, and LED light source - into a single lamp head housing. Unlike the traditional split-type structure with "solar panel + pole + battery box + light source," the all-in-one design achieves the form of "one lamp head = one complete lighting system."

Its core features can be summarized as "four integrations":

• Structural integration: PV panel, battery, controller, and LED light source are all built into the same housing - no scattered installation needed
• Electrical integration: All components are pre-wired and tested at the factory; on-site installation only requires fixing the lamp head
• Control integration: Built-in smart controller enables automatic switching between light control, time control, motion sensor, and other intelligent modes
• Maintenance integration: Modular design facilitates integrated replacement and maintenance without on-site disassembly of multiple components

1.2 All-in-One vs. Split-Type Solar Street Lights

Dimension	All-in-One Solar Street Light	Split-Type Solar Street Light
Structure	Single lamp head integrated design	PV panel/battery/light source separately arranged
Installation difficulty	Simple - just fix the lamp head	Complex - multiple components + wiring
Installation time	15-30 min per unit	2-4 hours per unit
Appearance	Clean and elegant, no exposed cables	More cables, less aesthetic
Anti-theft	Integrated design, hard to steal	Battery and PV panel vulnerable to theft
Maintenance convenience	Modular overall replacement	Requires individually checking each component
Power range	Medium-small power (20-120W)	Can do high power (200W+)
Initial cost	Slightly higher	Relatively lower
Lifecycle cost	Lower (installation + maintenance savings)	Higher

1.3 Market Development Background

The rise of all-in-one solar street lights is not accidental - it is driven by multiple factors:

Technology advancement: High-efficiency PV cell conversion efficiency continues to improve (mass-produced PERC cells now reach 23%+), LiFePO₄ battery energy density keeps increasing, and LED efficacy has exceeded 200lm/W - making it possible to achieve sufficient lighting power within a limited volume.

Cost reduction: Over the past decade, PV module costs have dropped by about 90%, lithium battery costs by about 85%, and LED light source costs by about 80% - significantly improving the cost-effectiveness of all-in-one solar street lights.

Policy support: China's "dual carbon" goals, global clean energy transition, and rural electrification programs worldwide provide broad market space.

Expanding applications: From initial new rural construction to urban branch roads, industrial parks, residential communities, scenic walkways, and more diverse scenarios.

2. Core Structure of All-in-One Solar Street Lights

Although an all-in-one solar street light looks like just a lamp head from the outside, it integrates a complete PV power generation and lighting system internally. A typical all-in-one solar street light consists of the following six core components:

2.1 Solar PV Panel

The PV panel is the energy source of the entire system, responsible for converting sunlight into DC electrical energy.

Technology types:

• Monocrystalline: High efficiency (22-24%), long lifespan, good temperature coefficient - currently the mainstream choice for all-in-one solar street lights
• Polycrystalline: Slightly lower cost but lower efficiency and weaker low-light performance - gradually being replaced by monocrystalline
• N-type TOPCon/HJT: New generation high-efficiency cell technology with efficiency up to 26%+ - currently mainly used in high-end models

Key parameters:

• Conversion efficiency: Determines power generation capacity per unit area
• Open circuit voltage (Voc): Must match battery voltage
• Short circuit current (Isc): Determines charging speed
• Size specifications: Limited by lamp head dimensions, usually custom-sized

The CHZ IST series all-in-one solar street lights use high-efficiency monocrystalline PV panels with conversion efficiency above 22%, ensuring maximum power generation within the limited lamp head area.

2.2 Energy Storage Battery

The energy storage battery stores the electrical energy generated by the PV panel during the day and discharges it at night to power the LED lighting.

Mainstream technology routes:

• LiFePO₄ (Lithium Iron Phosphate): Current absolute mainstream - high safety, long cycle life (3000-5000 cycles), good temperature adaptability
• NMC/NCA Ternary Lithium: Higher energy density but slightly lower safety and high-temperature stability - less commonly used
• Gel Battery: Used in early products - low cost but short lifespan and bulky - basically replaced by lithium batteries

Key parameters:

• Capacity (Ah): Determines energy storage capacity and backup time
• Voltage (V): Commonly 3.2V, 12V, etc. - must match PV panel and LED
• Cycle life: Determines battery replacement interval
• Operating temperature range: Outdoor applications require wide temperature adaptability

The IST series comes standard with LiFePO₄ batteries, with capacities ranging from 20Ah to 120Ah, cycle life ≥ 3000 times, stable operation from -20°C to 65°C, ensuring a reliable service life of 3-5 years.

2.3 Smart Controller

The controller is the "brain" of the all-in-one solar street light, responsible for managing battery charging/discharging, controlling LED on/off, and implementing various smart functions.

Core functions:

• Charge-discharge management: MPPT (Maximum Power Point Tracking) or PWM charging control, overcharge and over-discharge protection
• Light source control: Light control (auto-on at dusk), time control (scheduled on/off), motion sensor (full brightness when someone is present, reduced power when no one)
• Battery protection: Over-voltage protection, under-voltage protection, short circuit protection, reverse connection protection
• Status indication: Shows working status and battery level through indicator lights

Technology evolution:

• 1st generation: Simple PWM control + light control function
• 2nd generation: MPPT charging + time control + multi-period power adjustment
• 3rd generation: Smart sensor + Bluetooth/App configuration + remote monitoring
• 4th generation: IoT connectivity + smart dimming + data analysis + predictive maintenance

The IST series uses 3rd generation smart controllers with MPPT maximum power point tracking, improving charging efficiency by 15-20% compared to traditional PWM. It also supports triple smart modes: light control + time control + motion sensor, configurable flexibly according to actual needs.

2.4 LED Light Source Module

The LED light source is the final output of the system, responsible for converting electrical energy into light energy.

Core components:

• LED chip: Determines efficacy, CRI, and lifespan - leading brands include Lumileds, Cree, Osram, etc.
• Optical lens: Controls light distribution curve, ensuring road surface illuminance uniformity meets standards
• Heat dissipation structure: Integrated heat dissipation design, ensuring LED junction temperature is controlled within safe range
• Driver circuit: Constant current drive, ensuring stable LED operation

Key parameters:

• Efficacy (lm/W): System efficacy typically 120-160lm/W
• Color temperature (CCT): Common for street lights: 3000K (warm white), 4000K (natural white), 5700K/6500K (cool white)
• Color rendering index (CRI): Generally ≥70, special scenarios require ≥80
• Light distribution type: Batwing distribution (standard for road lighting), rectangular distribution, etc.

The IST series uses international first-tier brand LUMILEDS LED chips, with system efficacy above 160lm/W, standard batwing distribution lens, ensuring road illuminance uniformity ≥0.4, fully meeting road lighting standard requirements.

2.5 Housing & Heat Sink Structure

The housing is not just a "container" for components - it's also the fundamental structure for LED heat dissipation and PV panel mounting.

Design Considerations:

• Thermal design: Heat generated by LED operation must be effectively dissipated, otherwise it will seriously affect efficacy and lifespan. All-in-one designs typically use ADC12 aluminum alloy die-cast housings, utilizing the entire housing as a heat sink
• Protection rating: Outdoor use requires IP65 or higher protection rating - dustproof and waterproof
• Wind resistance: Must meet local maximum wind speed requirements for installation safety
• Material selection: ADC12 aluminum alloy die-casting is the mainstream solution, balancing thermal performance and cost

2.6 Sensors & Smart Modules

High-end all-in-one solar street lights are also equipped with various sensors and smart modules to achieve more intelligent functions:

• PIR motion sensor: Detects pedestrians/vehicles, enabling "full brightness when people come, dim when people leave" for significant energy savings
• Microwave radar sensor: Longer detection distance and higher sensitivity than PIR, can detect movement speed
• Light sensor: Detects ambient brightness for precise light-controlled switching
• Bluetooth/Wi-Fi module: Supports on-site parameter configuration via mobile app
• 4G/NB-IoT module: Supports remote monitoring, cluster management, and data analysis

3. Working Principle of All-in-One Solar Street Lights

Now that we understand the core structure, let's look at how all-in-one solar street lights work. The entire system follows the energy flow logic of "PV power generation battery storage smart control LED lighting."

3.1 Basic Working Process

The operation of an all-in-one solar street light can be divided into two cycles: charging phase and discharging phase.

Charging phase (daytime):

1. During the day, sunlight shines on the solar PV panel 2. The PV panel converts light energy into DC electrical energy using the photovoltaic effect 3. The electrical energy passes through the smart controller's MPPT charging circuit, charging the battery at optimal efficiency 4. The controller monitors battery voltage in real-time to prevent overcharging 5. At this time, the LED light source is in off state

Discharging phase (nighttime):

1. When ambient brightness drops to the set threshold (usually 5-10 lux), the light sensor triggers 2. The controller activates the LED driver circuit, and the LED light source starts emitting light 3. The battery discharges to provide electrical energy for the LED 4. The controller controls LED power according to preset programs (e.g., full brightness 3h half brightness 4h dim until dawn) 5. When battery voltage drops to the under-voltage protection point, the controller automatically cuts off output to prevent battery over-discharge

3.2 MPPT vs. PWM Charging Technology Comparison

Charging control is a key factor affecting system efficiency. Currently there are two main technology routes: MPPT and PWM.

Comparison Item	MPPT (Maximum Power Point Tracking)	PWM (Pulse Width Modulation)
Charging efficiency	High (15-25% higher than PWM)	Average
Application scenarios	High efficiency requirements, low-light environments	Low cost, small power
Cost	Higher	Lower
Battery life	Longer (better charging curve)	Average
Heat generation	Lower	Higher
Technical complexity	Higher	Lower

Why is MPPT more efficient? The output power of solar PV panels changes with light intensity and temperature, and there exists a "maximum power point." MPPT controllers can track this maximum power point in real-time, ensuring the PV panel always operates at optimal status, thereby maximizing charging efficiency. The advantage of MPPT is particularly evident under low-light conditions such as cloudy days, mornings, and evenings.

3.3 Smart Lighting Modes Explained

Modern all-in-one solar street lights typically support multiple smart lighting modes to balance lighting performance and energy savings.

Mode 1: Light Control (Simplest)

• Auto-on at dusk, auto-off at dawn
• Constant power output throughout the night
• Suitable for scenarios with low backup requirements and stable lighting needs

Mode 2: Time Control (Most Common)

• Power control by time period according to preset schedule
• Typical scenario: Full brightness first half of night (18:00-22:00) Half brightness middle night (22:00-02:00) Dim second half (02:00-dawn)
• Balances lighting needs and backup capability

Mode 3: Motion Sensor (Most Energy Efficient)

• When no one/no vehicle: Low power standby (e.g., 20% power)
• When person/vehicle detected: Automatically switches to full power
• After person/vehicle leaves: Returns to low power after delay (e.g., 30 seconds)
• Significant energy savings, can extend backup by 2-3x

Mode 4: Mixed Mode (Smartest)

• Combines time control and motion sensor
• E.g.: Full brightness first half of night (peak pedestrian/vehicle hours) + Sensor mode second half (low traffic hours)
• Balances safety and energy efficiency

The IST series supports all four modes above, and users can flexibly configure them via remote control or Bluetooth App to meet the personalized needs of different scenarios.

3.4 Rainy Day Backup Principle

Many people wonder: Can solar street lights still work during continuous rainy days? The answer is: Well-designed all-in-one solar street lights can usually support 3-7 consecutive rainy days of lighting.

Guarantee mechanisms for rainy day backup:

1. Battery capacity redundancy design: Battery capacity is designed based on "daily power generation × number of rainy days × safety factor," with sufficient margin 2. MPPT efficient low-light charging: Even on cloudy days, MPPT controllers can maximize the use of scattered light for charging 3. Smart power adjustment: When battery level is low, the system automatically reduces LED output power to extend lighting time 4. Energy-saving mode switching: Automatically switches to motion sensor mode during continuous rainy days, significantly reducing energy consumption

With the IST series, the standard configuration supports 3-5 consecutive rainy days of lighting, and high-configuration versions (large capacity battery + high-efficiency PV panel) can support more than 7 rainy days, fully meeting the climatic conditions of most regions in China.

4. Pros & Cons of All-in-One Solar Street Lights

4.1 Core Advantages

Advantage 1: Easy installation, low construction cost

This is the most intuitive advantage of all-in-one solar street lights. Traditional split-type solar street lights require installing PV panel brackets, battery boxes, light sources, and other components, plus on-site wiring and commissioning - taking 2-4 hours per unit. All-in-one solar street lights only need the lamp head fixed on the pole and connected, taking only 15-30 minutes per unit.

For a 100-unit project:

• Split-type: 100 units × 3 hours/unit = 300 work-hours
• All-in-one: 100 units × 0.5 hours/unit = 50 work-hours

Labor cost alone can be saved by about 83%, not including savings on cables, auxiliary materials, and other material costs.

Advantage 2: Clean appearance, elegant overall design

The integrated design places all components inside the lamp head, with no exposed cables, battery boxes, or PV panel brackets - the overall appearance is clean and streamlined, more coordinated with modern urban landscapes. For scenarios with high aesthetic requirements such as residential communities, scenic walkways, and commercial streets, all-in-one solar street lights are the better choice.

Advantage 3: Good anti-theft performance

PV panels and batteries of traditional split-type solar street lights are prime targets for thieves, especially in remote areas with high theft rates. The integrated design places the battery inside the lamp head, and the PV panel is integrated with the lamp head - greatly increasing the difficulty of theft and reducing the risk of asset loss.

Advantage 4: Simple maintenance, low O&M cost

All-in-one solar street lights use modular design. When a fault occurs, you only need to replace the entire lamp head without on-site disassembly and troubleshooting of multiple components. At the same time, because connection points and exposed cables are reduced, failure points are correspondingly fewer, and system reliability is higher.

Advantage 5: High intelligence level

The integrated design provides natural convenience for the integration of intelligent functions. Motion sensor, Bluetooth configuration, remote monitoring, and other smart functions can be pre-installed in the lamp head at the factory - users don't need to purchase and install additional smart modules.

Advantage 6: Low transportation and storage costs

All-in-one solar street lights integrate multiple components into one lamp head, with smaller packaging volume and lighter weight, correspondingly reducing transportation and storage costs. This is particularly important for export projects - significant sea freight savings can be achieved.

For a detailed side-by-side cost and ROI analysis, read our comparison of solar street lights vs traditional street lights to see which solution delivers better long-term value.

4.2 Limitations & Challenges

Limitation 1: Relatively low power ceiling

Limited by lamp head volume and weight, the PV panel area and battery capacity of all-in-one solar street lights cannot be infinitely increased, so the power ceiling is usually around 120W. For scenarios requiring high-power lighting (150W+) such as urban main roads, current all-in-one products still cannot fully meet demand.

However, with continuous improvements in PV efficiency and battery energy density, this ceiling is constantly being pushed higher. With the IST series, for example, the maximum power has reached 120W, with luminous flux above 18,000lm - fully meeting the lighting needs of urban branch roads and secondary roads.

Limitation 2: Relatively limited heat dissipation conditions

The integrated design concentrates heat-generating components such as LED light source, battery, and controller within one housing - heat dissipation conditions are not as good as split-type design (where each component is arranged separately and dissipates heat independently). Therefore, all-in-one solar street lights have higher requirements for heat dissipation design, which must be solved through optimizing housing structure, using high thermal conductivity materials, and other approaches.

Limitation 3: Battery replacement relatively complex

Although all-in-one solar street lights have lower failure rates, when battery life expires and replacement is needed, the entire lamp head must be removed for operation - not as convenient as the battery box replacement of split-type designs. However, with the continuous improvement of LiFePO₄ battery life (now reaching 3000-5000 cycles, 5-8 years of normal use), the frequency of battery replacement has been greatly reduced.

Limitation 4: Adaptability to extreme high temperature environments

In summer extreme high-temperature regions (such as the Middle East, parts of Africa), the internal temperature of the lamp head may reach above 70°C, which will have a certain impact on battery life and LED efficacy. Choosing high-quality LiFePO₄ batteries and optimizing heat dissipation design can alleviate this problem, but special attention is still needed when selecting models for extreme high-temperature regions.

4.3 Application Scenario Summary

Combining the above advantages and disadvantages, all-in-one solar street lights are particularly suitable for the following scenarios:

[x] Recommended scenarios:

• Urban branch roads, secondary roads
• New rural road lighting
• Industrial park factory roads
• Residential community roads and walkways
• Parks, scenic walkway lighting
• Parking lot lighting
• Off-grid lighting in remote areas

[ ] Less suitable scenarios:

• Urban main roads (requiring 200W+ high power)
• Highway lighting (very high illuminance and uniformity requirements)
• Extreme high-temperature regions (require special customization)

5. Application Scenarios of All-in-One Solar Street Lights

In the previous section we briefly listed applicable scenarios. This section provides detailed analysis of several typical application scenarios to help you determine whether your project is suitable for all-in-one solar street lights.

5.1 New Rural Road Lighting

This is one of the largest application scenarios for all-in-one solar street lights.

Why suitable?

• Rural roads are relatively narrow (usually 3-6 meters), low power requirements (30-60W is sufficient)
• Rural power grid coverage is incomplete, wiring costs are high - solar street lights don't need grid power
• Simple installation - no professional construction team needed, local workers can complete
• Low O&M cost - suitable for the limited management resources in rural areas

Selection recommendations:

• Power: 30-60W
• Pole height: 5-7m
• Installation spacing: 20-30m
• Lighting mode: Motion sensor mode (few pedestrians/vehicles after midnight, significant energy savings)
• Rainy day backup: 3-5 days is sufficient

Models such as IST9-3020 (30W) and IST9-5040 (50W) from the IST series are very suitable for new rural road lighting projects, with outstanding cost-performance.

5.2 Urban Branch Roads & Secondary Roads

As the power of all-in-one solar street lights continues to increase, their application scope is expanding from rural to urban areas.

Why suitable?

• Urban branch and secondary roads have relatively lower illuminance requirements - 60-120W is sufficient
• No need to excavate roads to lay cables - construction has less impact on traffic
• The aesthetic integrated design is more coordinated with urban landscapes
• Can serve as terminal nodes for smart cities, integrating various smart functions

Selection recommendations:

• Power: 60-120W
• Pole height: 8-10m
• Installation spacing: 25-35m
• Lighting mode: Time control mode (full brightness first half + half brightness second half)
• Rainy day backup: 3-5 days

Models such as IST11-8060 (80W) and IST11-12080 (120W) from the IST series are suitable for urban branch and secondary road lighting.

5.3 Industrial Parks & Factory Roads

Industrial parks are another important application scenario for all-in-one solar street lights.

Why suitable?

• Industrial park roads are mostly internal roads with moderate lighting standards
• Large factory areas with long roads - using solar street lights saves significant electricity costs
• Quick installation, doesn't affect normal production operations
• Can be combined with corporate ESG (Environment, Social, Governance) goals to enhance the company's green image

Selection recommendations:

• Power: 50-100W
• Pole height: 6-8m
• Installation spacing: 25-30m
• Lighting mode: Time control + motion sensor mixed mode
• Rainy day backup: 3-5 days

5.4 Residential Communities & Villa Areas

Residential communities have high requirements for the aesthetics and intelligence of street lights - all-in-one solar street lights perfectly meet these needs.

Why suitable?

• Integrated design with clean and beautiful appearance, enhancing the overall image of the community
• Motion sensor function ensures safety while achieving energy savings
• No cable laying, doesn't damage community greenery and road surfaces
• Can be part of the community's intelligent system, improving property quality

Selection recommendations:

• Power: 20-60W
• Pole height: 4-6m
• Installation spacing: 15-25m
• Lighting mode: Motion sensor mode (fewer pedestrians/vehicles at night in communities)
• Appearance: Choose aesthetically pleasing styles that match the community's architectural style

5.5 Parks, Scenic Areas & Walkways

Parks, scenic areas, greenways, and other places have relatively high requirements for both landscape quality and energy efficiency of street lights.

Why suitable?

• Integrated design with clean appearance, high integration with natural landscapes
• Solar power supply doesn't require cable laying, protecting the scenic ecological environment
• Motion sensor mode suits the characteristics of fewer night visitors in scenic areas
• Can serve as a showcase for smart and green scenic areas

Selection recommendations:

• Power: 20-50W
• Pole height: 3-5m
• Installation spacing: 15-20m
• Lighting mode: Motion sensor mode
• Appearance: Landscape design, customizable colors and shapes

5.6 Parking Lot Lighting

Parking lots are another applicable scenario for all-in-one solar street lights.

Why suitable?

• Parking lots are usually open spaces with good PV panel lighting conditions
• Fewer vehicle entries/exits at night - motion sensor mode has good energy-saving effect
• No grid wiring required, low construction cost
• Quick deployment, suitable for temporary parking lots

Selection recommendations:

• Power: 60-120W
• Pole height: 6-8m
• Installation spacing: 20-30m
• Lighting mode: Time control + motion sensor mixed mode
• Rainy day backup: 3-5 days

5.7 CHZ Real Project Cases (From CHZ Case Library)

CHZ Lighting's official case library (CHZ Case Directory Base) contains over 1,600+ actual projects across 100+ countries as of 2026. Below are typical project examples across different application scenarios:

Application Scenario	Project Location	Selected Model
Public Lighting (Solar)	Côte d'Ivoire	IST9
Scenic Pathway Lighting	Indian Archipelago Beach	IST2
Hotel Courtyard Lighting	Uyo Hotel, Nigeria	IST2
Rural Main Road	Africa Region	IST7 80W
Urban Public Lighting	Olmedo, Spain	IST9
National Highway / Road	Zhejiang S22 Road, China	IST11 80W
Urban Branch Road	Burkina Faso	IST14 60W
Urban Secondary Road	Burkina Faso	IST14 100W

The above projects are all from CHZ Official Case Library. For the complete project directory, see CHZ Case Directory. For detailed solutions tailored to specific scenarios, contact CHZ Lighting (email: jolina@chz-lighting.com) for free proposal design.

Before making your decision, it is also important to understand the potential drawbacks. Learn more about the disadvantages of solar street lights to ensure you select the right solution for your project.

6. All-in-One Solar Street Light Buying Guide

After understanding the applicable scenarios, how do you choose the right all-in-one solar street light for your project among many brands and models? Here are professional procurement suggestions.

6.1 Core Parameter Selection Points

Point 1: Power & Luminous Flux

Many people only look at "power" (W) when purchasing, but actually luminous flux (lm) is the indicator that truly determines brightness. LED efficacy varies greatly between brands - for the same 50W, a product with 120lm/W only has 6000lm, while a product with 160lm/W can reach 8000lm, a 33% brightness difference.

Recommendation:

• Prioritize system efficacy (lm/W), not just power
• Under the same luminous flux, lower power means higher efficacy and more energy savings
• For road lighting, system efficacy ≥140lm/W is recommended

Point 2: Matching of PV Panel Power & Battery Capacity

PV panel power and battery capacity need to be reasonably matched, otherwise problems of "can't fully charge" or "not enough" will occur.

Reasonable ratio reference (based on 4 hours average effective sunlight per day):

• PV panel power (W) × 4 hours × 0.8 (system efficiency) ≈ Daily power generation (Wh)
• LED power (W) × Lighting duration (h) ≈ Daily power consumption (Wh)
• Battery capacity (Ah) × Battery voltage (V) × 0.7 (DOD) ≥ Daily power consumption × Number of rainy days

Common misconceptions:

• [ ] Only looking at LED power, not considering PV panel and battery configuration
• [ ] PV panel too small, battery too large battery never fully charges, affecting lifespan
• [ ] PV panel too large, battery too small battery fills quickly, PV power is wasted

Point 3: Battery Type & Lifespan

• Must choose LiFePO₄ batteries: High safety, long cycle life, good temperature adaptability
• Pay attention to the authenticity of battery capacity: Some unscrupulous merchants falsely label capacity - actual capacity may only be 60-70% of nominal
• Focus on BMS (Battery Management System): A good BMS can effectively protect the battery and extend service life

Point 4: Controller Functions

• Prefer MPPT controllers: Charging efficiency 15-25% higher than PWM
• Confirm supported lighting modes: Whether light control, time control, motion sensor, etc. are supported
• Is there smart dimming function?: Multi-period power adjustment can greatly extend backup time
• Is parameter configuration supported?: Remote control, Bluetooth App, etc.

Point 5: Protection Rating & Material

• IP rating: At least IP65 for outdoor use, preferably IP66
• Housing material: ADC12 aluminum alloy die-casting is better than sheet metal and plastic
• Surface treatment: Outdoor powder coating, UV-resistant, corrosion-resistant
• Wind resistance rating: At least meets Grade 12 typhoon (32.7m/s)

6.2 Certification & Quality Assurance

Necessary certifications:

• CE certification: Basic EU market access requirement
• RoHS certification: Environmental hazardous substance restriction
• ISO9001: Quality management system certification
• IP65/IP66: Protection rating certification

Bonus certifications:

• ENEC+: European high-quality lighting certification
• CB certification: International electrical product safety certification
• ETL/TUV/UL: North American/German safety certification
• IEC 62133: Battery safety standard

Warranty terms:

• Whole lamp warranty: Industry standard is 2-3 years, quality brands can reach 3-5 years
• Battery warranty: Note that battery warranty period is usually shorter than whole lamp
• Warranty scope: Clarify which components are covered by warranty and which are not
• After-sales response: After-sales response time, spare parts supply speed, etc.

CHZ Lighting's IST series all-in-one solar street lights come with a 3-5 year warranty, have passed multiple certifications including CE, RoHS, and ISO9001, and are exported to more than 100 countries and regions worldwide, with over 1,600 projects delivered - quality guaranteed.

6.3 Price & Cost Analysis

Many people only look at the initial purchase price when buying, but actually life cycle cost (LCC) is a more scientific evaluation indicator.

Life cycle cost composition:

• Initial purchase cost (lamps + poles)
• Installation and construction cost
• Electricity cost (zero for solar street lights)
• Maintenance cost
• Component replacement cost (mainly batteries)
• Scrap and disposal cost

Cost comparison: All-in-one solar vs. Split-type solar vs. Grid street lights (calculated for 60W, 500 units, 10-year cycle):

Cost Item	All-in-One Solar	Split-Type Solar	Grid Street Light
Initial purchase	Higher	Medium	Lowest
Installation cost	Low	High	Highest (incl. cables + transformers)
10-year electricity	0	0	High
Maintenance cost	Low	Medium	Medium
Battery replacement	1 time	1-2 times	None
10-year total cost	Lowest	Medium	Highest

It can be seen that although the initial purchase price of all-in-one solar street lights is slightly higher, due to savings in electricity, installation, and maintenance costs, the life cycle cost is actually the lowest.

6.4 Supplier Selection Suggestions

Inspection dimensions:

1. Factory strength: Do they have their own production base? What's the production capacity? Size of R&D team? 2. Industry experience: How many years have they been in business? How many successful cases? 3. Product quality: Is there a complete quality control system? Are testing facilities complete? 4. Certification qualifications: Are product certifications complete? Are there third-party test reports? 5. After-sales service: How long is the warranty period? What's the after-sales response speed? 6. Customization capability: Do they support OEM/ODM customization? What's the MOQ?

Recommendation for on-site inspection: For large-volume procurement projects, it's recommended to visit the factory in person to see the production line, laboratory, quality control process, etc. - seeing is believing.

For commercial and municipal projects requiring detailed specifications and compliance documentation, download our commercial solar street light procurement guide with complete specs and selection criteria.

6.5 Practical Buying Guide - CHZ IST Series Example

After covering the theory, let's get back to practice. Below is a practical procurement process based on CHZ Lighting's IST series, helping you complete the entire process from inquiry to ordering within 1-2 weeks.

Step 1 | Requirements Assessment & Free Pre-review: Contact the CHZ sales team (email: jolina@chz-lighting.com) with your project location, road length, lighting conditions, pole height, installation spacing, and daily lighting hours (typically 10-12 hours). CHZ engineers will provide a pre-review proposal with DIALux simulation, lighting configuration, and budget breakdown within 2 business days.

Step 2 | Sample Testing & Small Batch Verification: CHZ offers 7-15 day sample delivery, with sample fees deductible from the first batch order. We recommend starting with a small batch order of 5-10 units for 2-4 weeks of continuous lighting verification on actual roads, focusing on key indicators like battery backup, controller charging/discharging efficiency, and PIR sensor sensitivity.

Step 3 | Parameter Comparison & Customization: Based on test data, confirm with CHZ engineers whether parameter fine-tuning is needed. CHZ supports ODM customization (e.g., CCT options from 2700K-6500K, Ra>80 high CRI solutions, special housing colors and logo printing) with MOQ starting from 50 units and customization lead time of 15-30 days.

Step 4 | Bulk Order & Production Tracking: After confirming the technical agreement, CHZ schedules production. Customers can track production progress in real-time through a dedicated project manager, with photos and videos synchronized at key milestones (raw material receipt / battery assembly / aging test / factory inspection).

Step 5 | Logistics & After-sales: CHZ operates 3 major production bases + 7 overseas offices, with flexible trade terms including FOB/CIF/DDP. Product warranty: 3-5 years, spare parts rate: 0.2% (far below industry average), and 99.2% on-time delivery rate keeps project schedules under control.

Buying Mnemonic: First check DIALux simulation (does efficacy meet standards?) Then check sample testing (does battery backup deliver?) Third check warranty & after-sales (what happens if something fails in year 5?). Pass all three checks before discussing price.

7. Installation & Maintenance Guide

7.1 Pre-Installation Preparation

Tool preparation:

• Basic tools: wrenches, screwdrivers, etc.
• Lift truck or ladder (depending on pole height)
• Multimeter (for debugging and testing)
• Safety equipment: safety belts, etc.

Material inspection:

• Are lamp head quantity and model correct?
• Are poles, flanges, bolts, and other accessories complete?
• Are product certificates, manuals, and other documents complete?
• Is there any transportation damage to the appearance?

Site survey:

• Confirm whether the installation location has obstructions (trees, buildings, etc.)
• Confirm whether the pole foundation meets requirements
• Confirm whether installation spacing and height conform to the design plan

7.2 Installation Steps

Step 1: Pole installation 1. Pour the pole foundation according to the design drawings 2. After the foundation curing period (usually 7 days), erect the pole 3. Adjust pole verticality, tighten anchor bolts

Step 2: Lamp head installation 1. Slide the all-in-one solar street light lamp head onto the top of the pole 2. Adjust the lamp head irradiation direction (usually toward the road center) 3. Tighten the clamp screws to ensure the lamp head is firm and doesn't shake 4. Connect the wiring inside the pole (if any)

Step 3: System commissioning 1. Check whether wiring is correct, no short circuits 2. Cover the PV panel with an obstruction to simulate night, observe whether LED lights up normally 3. Test whether various lighting modes work properly 4. Record initial working status

Step 4: Acceptance and handover 1. Check that all lamps are working properly 2. Check pole verticality and installation firmness 3. Organize as-built documents and deliver to the user

7.3 Daily Maintenance Points

The maintenance workload of all-in-one solar street lights is very small, but regular maintenance can still effectively extend service life.

Daily inspection (monthly):

• Check whether the lamps are turning on and off normally
• Check whether poles are tilted or loose
• Check whether PV panel surfaces have dust or fallen leaves blocking
• Check whether fasteners are loose

Quarterly maintenance (every 3 months):

• Clean PV panel surfaces (rinse with clean water, avoid hard object scratches)
• Check whether LED brightness has significant attenuation
• Check battery working status (through indicator lights or App)
• Check controller working status

Annual maintenance (yearly):

• Comprehensively check the working status of each system component
• Test battery capacity attenuation
• Tighten all connecting bolts
• Check whether grounding devices are intact

7.4 Common Faults & Troubleshooting

Fault Phenomenon	Possible Cause	Troubleshooting
Light doesn't turn on	PV panel blocked, battery not charged	Remove obstruction, recharge and try again
Light doesn't turn on	Battery damaged	Replace battery
Light doesn't turn on	Controller faulty	Replace controller
Brightness significantly decreased	Severe LED light decay	Replace LED module
Brightness significantly decreased	Battery capacity attenuation	Replace battery
Runs out quickly on rainy days	Insufficient or aging battery capacity	Replace higher capacity battery
Runs out quickly on rainy days	PV panel blocked	Clean PV panel, remove obstructions
Sensor function not working	Sensor damaged	Replace sensor
Water ingress	Seals aging	Replace seals, check internal damage

Note: All-in-one solar street lights have high-voltage components inside. Non-professionals should not disassemble and repair by themselves - contact the supplier or professional personnel for handling.

7.5 CHZ Global Project Showcase

The following 8 real projects are from the CHZ Official Case Library, covering 3 continents (Asia, Africa, Europe) and 6 countries, with models including IST2 / IST7 / IST9 / IST11 / IST14 from the all-in-one solar street light series:

Project Location	Selected Model	Application Scenario	Delivery Status
Côte d'Ivoire (Public Lighting)	IST9	Solar Public Lighting	Delivered
Indian Archipelago Beach	IST2	Scenic Pathway Lighting	Delivered (published on official website 2023-10-27)
Uyo Hotel, Nigeria	IST2	Hotel Courtyard Lighting	Delivered
Africa Region	IST7 80W	Rural Main Road	Delivered (project record available)
Olmedo, Spain	IST9	Urban Public Lighting	Delivered (filed 2021-12-06)
Zhejiang S22 Road, China	IST11 80W	National Highway / Road	Delivered
Burkina Faso	IST14 60W	Urban Branch Road	Delivered (100PCS)
Burkina Faso	IST14 100W	Urban Secondary Road	Delivered (60PCS)

The above project data is all from the CHZ Official Case Library, covering 3 continents (Asia, Africa, Europe), 6 countries, and 5 IST series main models.

8. CHZ IST Series All-in-One Solar Street Light Comparison

8.0 Why Choose CHZ Lighting

Before diving into specific model comparisons, let's first clarify "why CHZ" - what underlying capabilities should a supplier worth partnering with for 5-10 years have? The following 6 dimensions are the core barriers that CHZ Lighting has continuously refined since its founding in 2013:

① 13 Years of Deep Expertise, Focused Only on Outdoor Lighting

CHZ Lighting (Changhui Lighting) was founded in 2013, headquartered in Shanghai. It is a manufacturer with 13 years of focus on professional outdoor lighting products such as solar street lights / LED street lights / flood lights / garden lights. Unlike comprehensive lighting giants (such as Philips, Opple), CHZ has no home lighting business line - 100% of resources are focused on outdoor scenarios, with deeper understanding of outdoor details like extreme climates, ergonomic light distribution, and Class B road illuminance standards.

② 3 Major Bases + 1 Million Units Annual Capacity, Scalable Stable Supply

CHZ operates 3 major production bases in China (Shanghai + Foshan + Changzhou), with a total area of 18,000㎡ and annual production capacity of 1 million units. The 3 bases have clear division of labor - Shanghai does R&D + lithium battery assembly, Foshan does lamp assembly, Changzhou does PV modules. If one base has issues, it doesn't affect delivery from the other two - risk resistance is far higher than single-base small factories.

③ 7 Overseas Offices + 100+ Country Coverage, Closed-Loop Cross-Border Service

CHZ has established overseas offices in 7 countries including Spain, Côte d'Ivoire, Nigeria, Ghana, Argentina, and Romania, with local engineer teams covering the entire process of installation guidance, after-sales repair, and spare parts supply. As of 2026, CHZ products have been exported to over 100 countries and regions worldwide, with cumulative delivery of 1,600+ projects. Many overseas customers go from inquiry to installation in just 3 months - much faster than the traditional "find factory domestically + find agent overseas" chain.

④ 99.2% On-Time Delivery Rate + 0.2% Spare Parts Rate, High Project Certainty

The 99.2% on-time delivery rate and 0.2% spare parts rate (meaning only 2 out of every 1,000 units shipped need replacement within 5 years) are CHZ's actual operating data for 2025-2026. In comparison, the industry average spare parts rate is typically 1%-3%. This means customers' after-sales labor costs + spare parts inventory costs are far below the industry average.

⑤ 3-5 Year Warranty + Full Lifecycle Maintenance Service

CHZ provides a 3-5 year warranty (specific years based on contract terms), with free replacement for non-human damage during the warranty period. After the warranty period, spare parts and repairs are still provided at cost price - unlike some brands that stop providing spare parts after 5 years when production is discontinued. CHZ's logic is: if the light needs to shine for 10 years, spare parts must be supplied for 10 years.

⑥ Zero-Distance Compliance: ENEC / CE / RoHS / IECEE Full Certification

CHZ's full product line passes international mainstream certifications including ENEC+ / CE / RoHS / IECEE CB. All key indicators such as EMC, IP66, IK08 are reported by third-party independent testing institutions such as TÜV / SGS / BV. For high-compliance threshold markets like Europe, North America, and the Middle East, CHZ provides project-level compliance packages (including drawing review + on-site sampling + full document archiving).

One-Sentence Summary: 13 years of professionalism + 3 major bases for scale + 7-country localized service + 99.2% on-time delivery + 5-year warranty + global certification - these 6 points together constitute the underlying partnership value of CHZ Lighting, and are the fundamental reason why it is repeatedly repurchased by customers in 100+ countries.

CHZ Lighting, as a professional outdoor lighting solution provider, has its IST series all-in-one solar street lights covering the full power range from 20W to 120W, suitable for various application scenarios. Below is a comparison of the main IST series models.

8.1 IST Series Overview

The IST series is CHZ Lighting's core all-in-one solar street light product line, with the following common features:

• Fully integrated design: High-efficiency monocrystalline PV panel + LiFePO₄ battery + MPPT smart controller + LUMILEDS LED light source - all integrated in the all-in-one lamp head
• Smart control: Supports multiple modes including light control, time control, and motion sensor - configurable via remote control/App
• High-quality light source: Uses international first-tier brand LUMILEDS LED chips, system efficacy ≥160lm/W
• Long-life battery: LiFePO₄ battery, cycle life ≥3000 times, 3-5 years normal use
• High protection rating: IP65 protection, adapts to various harsh outdoor environments
• Multiple power options: 20W-120W, covering all needs from walkways to secondary roads
• 3-5 year warranty: Solar street light products come with 3-5 year warranty, giving users peace of mind

8.2 Main Model Comparison Table

Model	LED Power	Luminous Flux	PV Panel Power	Battery Capacity	CCT	Recommended Pole Height	Recommended Spacing	Typical Application
IST9-3020	30W	4800lm	20W	20Ah	4000/5700/6500K	4-5m	15-20m	Community walkways, scenic paths
IST9-5040	50W	8000lm	40W	40Ah	4000/5700/6500K	5-6m	20-25m	Rural roads, community roads
IST11-6050	60W	9600lm	50W	50Ah	4000/5700/6500K	6-7m	25-30m	Rural main roads, factory roads
IST11-8060	80W	12800lm	60W	60Ah	4000/5700/6500K	7-8m	25-30m	Urban branch roads, industrial parks
IST11-10080	100W	16000lm	80W	80Ah	4000/5700/6500K	8-9m	30-35m	Urban secondary roads, parking lots
IST11-12080	120W	19200lm	80W	100Ah	4000/5700/6500K	8-10m	30-35m	Urban secondary roads, large parking lots

Note: The above parameters are typical values. Please refer to the product specification sheet for details. OEM/ODM customization supported.

8.3 Selection Recommendations by Scenario

New rural construction projects:

• Recommended models: IST9-5040 / IST11-6050
• Reason: High cost-performance, meets rural road lighting needs, simple installation and maintenance

Urban branch/secondary roads:

• Recommended models: IST11-8060 / IST11-10080
• Reason: Sufficient power, high efficacy, beautiful appearance, suitable for urban environments

Industrial parks:

• Recommended models: IST11-6050 / IST11-8060
• Reason: Stable and reliable, significant energy-saving effect, reduces enterprise electricity costs

Residential communities/villa areas:

• Recommended models: IST9-3020 / IST9-5040
• Reason: Clean and beautiful appearance, motion sensor mode is both energy-saving and safe

Parks and scenic areas:

• Recommended models: IST9-3020 / IST9-5040 (landscape version)
• Reason: Beautiful design, integrates with natural environment, motion sensor mode is energy-saving and environmentally friendly

8.4 Core Competitive Advantages of IST Series

Advantage 1: Whole industry chain quality control

CHZ Lighting has 13 years of outdoor lighting industry experience (founded in 2013), three production bases with a total area of 18,000㎡, and an annual production capacity of 1 million units. From LED packaging and power supply design to whole lamp assembly, the whole industry chain is independently controllable, ensuring stable product quality.

Advantage 2: Strict quality control system

Each IST series street light undergoes strict quality testing before leaving the factory, including:

• Photoelectric performance testing (luminous flux, CCT, CRI, etc.)
• High and low temperature cycle testing (-20°C ~ 65°C)
• IP65 waterproof and dustproof testing
• Vibration testing
• Aging testing (continuous 72 hours)
• Appearance inspection

Advantage 3: Comprehensive after-sales support

• 3-5 year warranty: IST series provides industry-leading warranty period
• 99.2% on-time delivery rate: Ensures projects are completed on schedule
• 0.2% spare parts reserve: Quick response to after-sales needs
• 7 overseas offices: Localized service support
• Professional technical team: Provides full-process services including selection, design, and installation guidance

Advantage 4: Flexible customization capability

• OEM/ODM customization supported
• Customizable CCT, light distribution, appearance color, etc.
• Customizable smart functions (Bluetooth, 4G, IoT platform, etc.)
• Flexible MOQ to meet different scale project needs

9. Frequently Asked Questions (FAQ)

Q1: Which is better - all-in-one or split-type solar street lights?

A: It depends on the specific application scenario. The advantages of all-in-one solar street lights are convenient installation, beautiful appearance, good anti-theft performance, and low O&M cost - suitable for medium-small power scenarios (20-120W). The advantages of split-type are higher power capability and better heat dissipation - suitable for high-power scenarios such as main roads. For most scenarios like branch roads, factory areas, communities, and rural roads, all-in-one solar street lights are the better choice.

Q2: Can solar street lights work on rainy days? How many days?

A: Well-designed solar street lights all consider rainy day backup. The IST series standard configuration supports 3-5 consecutive rainy days of lighting, and high-configuration versions can support more than 7 rainy days. The specific backup time depends on battery capacity, LED power, and lighting mode.

Q3: What is the lifespan of solar street lights?

A: Different components of solar street lights have different lifespans:

• LED light source: Theoretical lifespan 50,000+ hours, 10+ years of normal use
• PV panel: 25+ years
• LiFePO₄ battery: 3000-5000 cycles, 3-5 years of normal use
• Controller: 5-8 years

The effective service life of the whole lamp is usually 5-8 years, during which the battery may need to be replaced once.

Q4: Can solar street lights be used in cold winter temperatures?

A: Yes, they can. The operating temperature range of LiFePO₄ batteries is typically -20°C to 65°C, and they can work normally in most parts of China in winter. However, low temperatures will reduce battery capacity, so it is recommended to appropriately increase battery capacity when selecting models for cold regions.

Q5: Do solar street lights need frequent maintenance?

A: No. All-in-one solar street lights are almost "maintenance-free" - you only need to check monthly whether they work normally and whether the PV panel is blocked, and clean the PV panel surface quarterly. The maintenance workload is much lower than traditional grid street lights.

Q6: What is the investment payback period for solar street lights?

A: It depends on local electricity prices and installation costs. Generally speaking, compared to grid street lights, the investment payback period for solar street lights is 3-5 years. After that, use is almost zero-cost (no electricity bill needed), and the economic benefit is very significant.

Q7: Can solar street lights be connected to grid power as backup?

A: Some models support grid complementary function - when the battery is exhausted during continuous rainy days, it automatically switches to grid power supply to ensure uninterrupted lighting. If your project has extremely high reliability requirements for lighting, you can choose models with grid complementary function.

Q8: What smart functions does the IST series support?

A: The IST series supports multiple smart functions, including:

• Light control auto on/off
• Time control multi-period dimming
• Motion sensor smart dimming
• Remote control parameter configuration
• Bluetooth App on-site configuration (optional)
• 4G remote monitoring platform (optional)
• IoT smart street light management system (optional)

Q9: What service support does CHZ Lighting provide?

A: CHZ Lighting provides comprehensive service support:

• Pre-sales: Professional selection guidance, lighting design solutions, sample testing
• In-sales: Production progress tracking, quality inspection reports, packaging and transportation arrangements
• After-sales: Warranty service, technical support, spare parts supply, training and guidance
• OEM/ODM customization support to meet the personalized needs of different customers

Q10: How to get detailed quotes and samples for the IST series?

A: You can contact CHZ Lighting through the following methods for detailed quotes and samples:

• Email: jolina@chz-lighting.com
• Website: www.chz-lighting.com
• Alibaba International: chzled.en.alibaba.com

A professional sales team will reply to your inquiry within 24 hours.

Conclusion

All-in-one solar street lights, as the culmination of solar lighting technology, are reshaping the outdoor lighting industry landscape with their core advantages of integration, intelligence, and convenience. From new rural construction to urban branch roads, from industrial parks to residential communities, the application scenarios of all-in-one solar street lights are continuously expanding.

Choosing all-in-one solar street lights is not just choosing a lighting product - it's choosing a green, smart, and economical lighting solution. Against the backdrop of the "dual carbon" goals, all-in-one solar street lights will surely play an increasingly important role in China's green and low-carbon transition.

As a professional outdoor lighting enterprise with 13 years of industry experience, CHZ Lighting has always been committed to providing high-quality all-in-one solar street light products and solutions for global customers. Its IST series products, with excellent performance, reliable quality, and comprehensive services, have been exported to more than 100 countries and regions worldwide, serving over 1,600 projects - your trusted partner.

If you are looking for an all-in-one solar street light supplier, welcome to contact CHZ Lighting for professional selection advice and quotation solutions.