Designing a reliable all-in-one solar street light requires a balanced match between solar panel power, LED light power, and battery capacity.
The goal is to ensure stable performance, full-night operation, and long battery life under real environmental conditions.
🧭 1. Define Your Design Requirements
Before selecting components, confirm these parameters:
- Installation location and latitude– affects daily solar radiation.
- Required lighting hours per night– e.g., 10–12 hours.
- Backup days for cloudy/rainy weather– usually 2–3 days.
- Mounting height and lighting area– determines LED power.
⚙️ 2. Core Matching Principles
| Item | Recommended Calculation | Notes |
| LED Power (W) | Based on mounting height: 3–4M → 15–25W 5–6M → 30–40W 7–8M → 50–60W 9–10M → 80–100W | LED efficiency ≥180LM/W |
| Battery Capacity (Ah) | = LED Power × Lighting Hours × Backup Days ÷ (Battery Voltage × Depth of Discharge × Efficiency) | Common voltage: 3.2V or 12.8V (LiFePO₄) Depth of Discharge: 0.8 Efficiency: 0.9 |
| Solar Panel Power (W) | = LED Power × Lighting Hours × Backup Days ÷ (Peak Sun Hours × Charging Efficiency × Voltage) | Peak Sun Hours ≈ 4–5h/day |
🧩 3. Typical Engineering Configurations (with LiFePO₄ Battery)
| Mounting Height | LED Power | Battery Capacity | Solar Panel | Recommended Application |
| 4M | 20W | 12.8V 15-20Ah | 25W MONO | Garden, community roads |
| 5–6M | 30–40W | 12.8V 20-30Ah | 40–50W MONO | Village or secondary roads |
| 7–8M | 50–60W | 12.8V 30-40Ah | 60–80W MONO | Rural main roads |
| 9–10M | 80–100W | 12.8V 40–50Ah | 100–120W MONO | Engineering projects, intersections |
| 12M | 120–150W | 12.8V 60–80Ah | 150–180W MONO | Main roads, high-pole lighting |
💡 4. Professional Design Recommendations
- Use high-efficiency MONO solar panels(conversion efficiency >21%).
- Choose LiFePO₄ (Lithium Iron Phosphate)batteries — safe, long lifespan, excellent for high temperatures.
- Enable intelligent power management to automatically adjust brightness through the night.
- Use die-cast aluminum housing with IP65 waterproof rating for outdoor durability.
If you tell me:
- Installation height
- Location(city or country)
- Required lighting hours per night
Newskypower solar street light team will help you calculate an optimized configuration with accurate ratios for LED power, battery capacity, and solar panel size.
FAQ About All-in-One Solar Street Light Design
How do you design an all-in-one solar street light?
Start with the installation height, required lighting hours, local peak sun hours, and backup days. Then match the LED power, solar panel, and battery capacity accordingly.
How do I calculate the battery capacity for a solar street light?
Battery capacity depends on LED power, daily lighting hours, system voltage, discharge depth, efficiency, and required backup time for cloudy days.
How do I choose the solar panel size for a solar street light?
The solar panel should generate enough daily energy to replace the electricity consumed at night. Local peak sun hours and charging efficiency are important factors.
What battery is best for all-in-one solar street lights?
LiFePO₄ batteries are widely used because of their long cycle life, safety, and good performance in many outdoor environments.
How many hours can an all-in-one solar street light work?
A properly designed solar street light can provide all-night lighting. Actual working time depends on battery capacity, solar charging conditions, LED power, and lighting mode.
How many cloudy or rainy days can a solar street light support?
Many engineering systems are designed for 2–3 backup days, but the required capacity should be calculated according to local weather and project requirements.
What information does a manufacturer need to design a solar street light?
Provide the project location, pole height, required lighting hours, road dimensions, brightness requirements, and expected backup days. The manufacturer can then recommend a suitable configuration.
