Calculate Your
Solar Savings
Get an instant estimate of your solar system size, costs, and potential savings in under 60 seconds. No signup required.
Estimate your solar system.
Enter a few details and see projected size, cost, and savings—no signup required.
Your Roof Size
Calculation: 30 sqft per 450W panel
Based on standard solar panel dimensions
Your Estimate
Number of Panels
30
450W panels
System Size
13.5
kilowatts (kW)
Monthly Generation
1.09 - 1.33 MWh
Average: 1.21 MWh/month
Monthly Value (at S$0.30/kWh)
S$363
Based on average generation
25-Year Linear Estimate
Total Generation
363.0 MWh
Total Value
S$108,900
Linear estimate assumes consistent generation over 25 years
Panel Output
450W
High-efficiency monocrystalline panels
Monthly Generation
1.09-1.33 MWh
For 30 panels (13.5 kW system)
Electricity Value
S$0.30/kWh
Estimated value per kWh generated
How It Works
Four simple steps to discover your solar potential.
Enter Your Roof Size
Input your available roof space in square feet.
Get Instant Results
Our calculator determines your optimal system size and projected returns.
Review Your Returns
See projected costs, generation, payback period, and 25-year net benefit.
Connect With Us
Schedule a free consultation to discuss your personalized solar solution.
Understanding Your Results
System Size
Based on your available roof space (80 sqft per 1kW), this is the maximum solar system size for your property.
Annual Generation
Estimated yearly energy production based on Singapore solar data (1,458 kWh per kW annually).
Estimated Cost
The total cost includes Tier 1 solar panels, inverter, installation, and commissioning at S$1,900 per kW.
Payback Period & Net Benefit
Payback is calculated at S$0.30/kWh. Excess energy is sold back to the grid at S$0.20/kWh.
60 Seconds
To get your estimate
Frequently Asked Questions
Common questions about our solar estimator.
How accurate is this estimate?
This calculator provides a preliminary estimate based on Singapore solar generation data (1.09-1.34 MWh/month for 10kW). A detailed site assessment will give you a more precise quote.
What happens to excess solar energy?
In Singapore, excess solar energy is sold back to the grid at S$0.20/kWh under the SP Group grid integration scheme.
Does the estimate include installation costs?
Yes, the estimated cost includes solar panels, inverter, installation, and commissioning.
How is the payback period calculated?
Payback is calculated using S$0.30/kWh value for generated electricity, based on current SP Group rates.
Frequently Asked Questions
Our estimator provides a preliminary assessment based on your roof space and typical Singapore solar conditions. Actual savings depend on your specific roof orientation, shading, and electricity usage patterns. For a precise quote, we recommend a free on-site assessment.