Background
A villa owner in Bali, Indonesia, required a reliable power supply for their property located outside the coverage of the national electricity grid. Diesel generators were previously used, but they were noisy, polluting, and expensive to run. The owner wanted a clean, independent, and long-term energy solution to power daily living needs and ensure 24/7 electricity.
The Challenge
The villa needed a power solution that could:
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Fully cover essential household loads (lighting, refrigerator, fans, washing machine, water pump, and internet).
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Operate completely off-grid with zero reliance on utility supply.
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Store sufficient electricity for overnight use and cloudy days.
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Require minimal maintenance and provide long service life.
The Solution
We designed and installed a 10kWh Off-Grid Solar Power Station, consisting of:
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Solar Panels: 6 kW rooftop photovoltaic array to generate renewable power.
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Hybrid Inverter (8 kW): Intelligent inverter capable of managing solar input, battery storage, and AC output simultaneously.
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Lithium Battery Storage: 48V 200Ah (≈10.24 kWh) LiFePO₄ battery pack, supporting >6,000 cycles at 80% depth of discharge.
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Controller & Monitoring: Smart charge controller and app-based monitoring to track performance, consumption, and state of charge.
Results & Benefits
- Energy Independence: The villa now operates 100% off-grid, providing stable electricity day and night.
- Load Capacity: The 10kWh battery supports up to 12–14 hours of essential load operation without sunlight.
- Eco-Friendly: Replaced diesel generator use, cutting over 3 tons of CO₂ emissions annually.
- Cost Savings: Reduced long-term energy costs by ~60%, eliminating fuel and generator maintenance expenses.
- Longevity: The LiFePO₄ battery offers a lifespan of 10–12 years, ensuring reliability with minimal maintenance.
Customer Feedback
We no longer worry about blackouts or noisy generators. The off-grid solar system provides quiet, clean, and reliable power every day. It’s perfect for our villa lifestyle.