Reference Case of LED Road Messenger (Company S)
Road Showing Power Supply Company S Case Study
| Location | Kanto/Tokai (Off grid area) |
|---|---|
| Purpose | Power supply system for Road indicator lights on expressways |
| Power consumption | Average power 30W |
| Load | LED Road messenger |
| Fuel Cell System Specification | 1set of EFOY 800 Pro Duo JP (45W) is used. |
| Output | AC100V |
| DC24V | |
| Methanol volume | 10 L × 3 pieces (30L) |
| Storage amount of electricity | 30,000Wh |
| Number of operation days | 42 days (for Fuel Cell only) |
| Issues | In winter and rainy seasons, solar panels can’t supply electricity stably and the displays turned off. |
| Solution | Solar panels and Fuel Cell provides a stable supply of electricity in winter and rainy seasons. |
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