Solar Streetlight Solution

Project Background and Needs Analysis

Application Scenarios

Rural Road Lighting: To address the lack of grid coverage and high cabling costs in remote areas (e.g., village roads, field paths, town squares).

Municipal Projects: For urban parks, pedestrian walkways, and industrial zones where energy conservation and environmental protection are priorities.

Special Scenarios: For scenic areas, resorts, and temporary disaster relief sites requiring independent, maintenance-free lighting solutions.

Core Requirements

Lighting Duration: Average daily lighting time (e.g., 6-12 hours) and backup capacity for continuous overcast/rainy days (e.g., 3-5 days).

Brightness Standard: Road surface illuminance (e.g., ≥10 lux for rural roads, ≥20 lux for municipal roads) and lighting uniformity.

Intelligent Functions: Requirements for features like photocontrol (dusk-to-dawn), time control, remote APP management, or motion sensing.

Installation Conditions: Pole height (3-8 meters), ground conditions (soil/concrete), and potential obstructions (trees, buildings) affecting the solar panel.

Light Pole Design and Ethnic Customization Plan

Poles can be custom-designed to reflect local or international ethnic characteristics, or based on client-provided drawings. Logos and slogans can be incorporated into the pole and lamp head.

Design Principles:

Functionality First:

Ensure structural strength (wind resistance ≥ Level 10), lightning protection (grounding resistance ≤ 10Ω), and impact resistance (IK08).

Cultural Adaptability:

Abstract cultural elements (patterns, totems) into the design while avoiding overly literal representations that may be controversial.

Cost Control:

Achieve customization through modular decorative parts on standard tapered/octagonal poles, with a target cost increase of ¥300-¥800 per unit.

Ethnic Customization Schemes (Examples):

Region/Ethnicity	Design Elements	Implementation Method
Mongolian (China)	Saddle shape, cloud patterns, blue/white	Saddle-shaped lamp head, pole painted with cloud patterns, abstract yurt-top element.
Tibetan (China)	Prayer flag colors, lotus pattern	Pole painted with five colored bands, lotus-shaped lampshade, optional prayer wheel.
Uyghur (China)	Geometric patterns, Atlas silk colors	Laser-etched geometric patterns on the pole, lampshade made of translucent Atlas material.
Dai (China)	Peacock feathers, pagoda shape	Lamp head designed like a peacock's tail, pole with a bamboo texture.
Southeast Asia	Pagoda, lotus, elephant totems	Small bronze pagoda at the top, lamp head in the shape of an elephant's trunk.
Middle East	Geometric mosaics, star and crescent	Geometric cutouts on the pole, blue and gold color scheme, star and crescent finial.
North Europe	Viking ship, Thor's hammer, aurora colors	Lamp head shaped like a Viking prow, pole painted with a gradient aurora effect.
Native American	Feather headdress, totem poles, earth tones	Pole with faux feather decorations, carved with tribal totems, base with a rock texture.

Cultural Sensitivity Guidelines:

Placement:

Avoid placing commercial logos directly on religious or cultural symbols (maintain at least 15cm distance).

Color:

Avoid yellow in the Middle East (death) and white in India (mourning). Use neutral base colors like grey or charcoal.

Language:

Use local languages or accepted English abbreviations in non-English speaking regions.

Logo/Brand Integration Methods:

Method	Technical Description	Durability
Laser Engraving	Etching of logo/text (0.2-0.5mm deep) onto the metal pole	10+ years
Metal Nameplate	Stainless steel/aluminum plate with logo, fixed with screws.	5-8 years, replaceable
Translucent Film	UV-printed logo on PET film applied inside the lampshade.	3-5 years
Embedded LED	LED module set into a groove on the pole for nighttime illumination.	5-8 years

System Solution Design

Hardware Configuration:

Component	Technical Parameters	Selection Basis
Solar Panel	Power: 100-300W (Monocrystalline/Polycrystalline), Efficiency ≥20%	Panel Power = (Light Source Power × Lighting Hours) / Avg. Daily Sunshine Hours
Battery	Type: LiFePO4 (recommended) or Ternary Lithium, Capacity: 100-300Ah	Battery Capacity = (Light Source Power × Lighting Hours × Rainy Days) / System Voltage (12V/24V)
LED Source	Power: 30-100W, Color Temp: 3000K (Warm) / 5000K (White), Efficacy ≥150 lm/W	Warm light is recommended for rural roads, white light for municipal roads.
Controller	Intelligent MPPT charge controller with overcharge/discharge protection, photocontrol + time control.	Ensures battery longevity and supports scheduled dimming (e.g., 100% until midnight, 50% after).
Pole	Material: Q235 hot-dip galvanized steel (zinc layer ≥85μm), powder-coated finish. Stainless steel (304/316) for coastal areas. Shape: Tapered or Octagonal.	Hot-dip galvanizing + powder coating provides >10 years of corrosion protection.

System Topology:

Solar Panel → Controller → Battery → LED Light Source
(Control inputs: Photocell / Timer / Remote Control)

Implementation Workflow:

Cultural Research (3-5 days) → 3D Model Design (5-7 days) → Quotation & Deposit (1-3 days) → Sample Production (5-10 days) → On-site Installation & Testing (3 days) → Mass Production

Intelligent and Energy-Saving Design

Control Modes

Photocontrol + Time Control: Automatic on at sunset, dims to 50% power after a set time (e.g., 2:00 AM) to save energy.

Motion Sensing: An optional PIR sensor brings the light to full brightness when a person approaches and returns to a dimmed state after they leave, extending battery life.

Remote Monitoring: An optional 4G/Bluetooth module allows for remote monitoring of battery status and control via a mobile APP.

Energy Optimization

Dynamic Power Adjustment: The controller automatically reduces brightness (e.g., to 30% power) if the battery charge drops below a critical threshold.
Efficient Component Matching: The power ratings of the solar panel, battery, and light source are carefully matched to prevent energy waste.

Installation and Construction Plan

Site Selection: Panels should face south (in the northern hemisphere) at an angle equal to the local latitude ±5°. The location must be free of shadows from trees or buildings.
Foundation: A C25 concrete foundation (e.g., 500x500x800mm) with pre-embedded anchor bolts is required.
Workflow: Site Survey → Foundation Pouring (3-5 days curing) → Pole Erection → Wiring of Panel and Lamp → Controller Commissioning → System Trial Run (72 hours).

Maintenance and Warranty Plan

Maintenance-Free Design: The battery is housed in a sealed, waterproof case (5-8 year lifespan). The solar panel has a self-cleaning coating to reduce dust accumulation. The controller includes a self-diagnostic function that sends an alert in case of a fault.
Warranty and After-Sales:
Warranty: 2-year warranty on the entire system, 5-year warranty on the solar panel (power degradation ≤20%), and 3-year warranty on the battery.
Service: Optional quarterly inspection service, including panel cleaning, battery voltage checks, and brightness calibration.

Benefit Analysis

Economic Benefits: Compared to a traditional 30W grid-powered light, a solar streetlight eliminates annual electricity costs (approx. ¥87.6 per year) and cabling costs. The initial investment is offset by long-term savings.
Social Benefits:
Eco-Friendly: Reduces carbon emissions significantly over its lifespan (approx. 1720 kg of CO₂ over 20 years).
Improved Livelihoods: Provides essential lighting in underserved remote areas, enhancing public safety and improving rural infrastructure.

Risks and Countermeasures

Prolonged Bad Weather: Battery capacity is calculated to last ≥3 overcast days. During extreme weather, the system automatically dims the light to 30% to conserve power.
Theft Risk:

Anti-theft bolts can be used at the base of the pole. The battery box can be equipped with an optional GPS tracker.