Free Calculation

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Calculator™

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⚡ Calculate Your Energy Freedom

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💡 Find this on your monthly CEB or LECO electricity bill. Look for "Units Used" or "kWh".

Quick Reference

250 units/mo
→ ~2 kW system
500 units/mo
→ ~4 kW system
1000 units/mo
→ ~8 kW system
Recommended System Size
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Battery Storage
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System Investment
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Payback Period
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Monthly Savings
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Annual Savings
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ℹ️ Estimate disclaimer: Calculations are based on standard assumptions (1 kW ≈ 120 units/month, LKR 50/unit savings, LKR 240,000/kW system cost). Actual figures may vary based on your specific location, roof orientation, shading, and usage patterns. Get a free professional site assessment for accurate pricing.

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How We Calculate Your Solar System

📊

System Size

1 kW ≈ 120 units/month. We divide your usage by this to find the right system size.

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Battery Storage

1 kW of solar requires 2 kWh of battery storage for full off-grid operation.

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Savings & ROI

LKR 50 saved per unit. System cost ÷ monthly savings = payback period in months.

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