Project Context & Requirements
As a highly urbanized nation, Japan’s public parks serve not only as green oases for leisure but also as vital components of the urban ecosystem. This case study focuses on a park within a modern Japanese city. Nestled amid dense urban development yet offering distant mountain views, the park blends traditional garden aesthetics with contemporary landscapes. However, growing nighttime activity has created multiple lighting challenges.
Geographical Location and Environmental Characteristics
Located in central Japan, the park experiences distinct seasons: hot, rainy summers and cold, dry winters. Surrounded by tall buildings, sunlight exposure is limited, while the scenic mountain views require lighting that preserves visual harmony. As a hub for walking, fitness, and family gatherings, inadequate nighttime illumination had become a safety concern.
Core Challenges
Aesthetic Integration: Japanese garden design emphasizes simplicity and nature, requiring lighting fixtures to blend seamlessly with the environment. Traditional streetlights—often bulky and monotonous—failed to meet these aesthetic expectations.
Complex Climate: Frequent rainfall and typhoons challenge solar panel durability and lighting stability. Extreme temperatures — winter lows reaching -20°C and summer highs exceeding 45°C — can degrade battery efficiency and cause failures.
Disaster Preparedness: As designated evacuation sites during earthquakes or typhoons, parks must maintain independent off-grid lighting for more than 10 days during outages.
Low-Carbon Sustainability: In line with Japan’s “Net Zero Carbon” initiative, public facilities face strict emission-reduction targets. Lighting must operate with zero electricity costs while meeting international environmental standards such as IP65 waterproof ratings and high energy efficiency.
These demands test technical performance, sustainability, and user experience. Through field research, the Sresky team identified key pain points and developed a tailored solution centered on the UFO series.
Technical Solution Design
For this project, Sresky selected the UFO series solar streetlights as the core equipment. Known for its circular design, the series prioritizes landscape aesthetics while delivering efficient, reliable illumination.
1. Core Equipment: Sresky UFO Series
Product Positioning: Featuring a sleek circular design with a gray aluminum alloy housing and PC lens, the UFO integrates naturally with Zen-inspired landscapes. Lightweight construction (3 m installation height, 10 m spacing) and 2000-lumen output make it ideal for pathways, benches, and leisure plazas.
2. Solution Highlights
Installation-Free: Solar power eliminates trenching and cabling, protecting vegetation and soil while complying with environmental regulations.
Smart Remote Control: Supports multiple modes — M1, M2, M3, and Timer mode (100% brightness for 1–2 hours). Indicator lights simplify maintenance and status checks.
This design enhances lighting performance while harmonizing technology with aesthetics, positioning the park as a model for smart-city development.
Project Implementation
A modular process ensured efficient deployment with minimal disruption. The Sresky team worked with local contractors to complete installation and commissioning within one week.
Foundation Work: Standardized foundation cages reinforced with C20 concrete ensured stability and high wind resistance.
Efficient Assembly: Luminaires were attached using matching screws, reducing labor time.
Light-Pole Installation: Poles were lifted, aligned, and secured with bolts, minimizing interference with park activities.
Visual Effect Comparison
Daytime: Gray poles and disc-shaped heads integrate seamlessly into the skyline and surrounding scenery. Solar panels are discreetly concealed above the discs, preserving a minimalist aesthetic.
Nighttime: 5700K lighting gently brightens seating and pathways, eliminating dark spots through 360° distribution and improving visual comfort. Park management praised the eco-friendly installation process.
Project Outcomes & Impact
Since deployment, the UFO system has operated for more than a year with outstanding results.
1. Social Value
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Extended usage hours and increased park utilization by 30%.
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Enhanced safety, with a reported 15% decrease in nighttime incidents.
2. Sustainability
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Zero electricity costs, reducing CO₂ emissions by approximately 0.5 tons per lamp annually.
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TCS technology supports a 13-year battery lifespan, reducing maintenance by 50%.
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ALS ensures more than 10 days of lighting during prolonged rainy weather.
Overall, the project improves park livability and supports Japan’s “Green City” initiative.
Risk Management and Response Strategies
In disaster-prone environments, proactive risk planning is essential. Sresky solutions address these challenges directly.
Extreme Weather: IP65 protection and ALS technology ensure lighting continuity during typhoons or long rainy periods.
Battery Protection: TCS intelligent temperature control optimizes performance in extreme heat and cold, reducing battery degradation by up to 30%.
Remote monitoring and backup mode switching maintain 99.9% system availability.
Conclusion: Expert Review of Solar Streetlight Case Studies
As experts in solar street-lighting solutions, this case demonstrates that the Sresky UFO is more than illumination—it is a foundation for smart-city transformation. By balancing performance with aesthetics, it solves key challenges in Japanese parks and sets a global benchmark for sustainable urban upgrades. For municipal planners, landscape architects, and eco-focused businesses, the Sresky UFO deserves serious consideration.