/ Solar CalculatorFEASIBILITY · EST

Commercial Solar Feasibility Calculator

An indicative infrastructure-grade estimate across three AES commercial solar service models. Enter your consumption profile to explore system sizing, savings, and investment structures.

Consumption Profile
Estimated Results
Recommended System Size
66.7kWp
Estimated Monthly Generation
7,500kWh/month
Estimated Monthly Savings
31,500THB/month
Estimated Annual Savings
378,000THB/year
Estimated CO₂ Reduction
36tons/year
Required Roof Area
400

Required roof area exceeds the area you entered. System size may be limited by available roof space.

Model Comparison

Customer-Owned EPC

  • Customer investment: 100%
  • EPC delivery by AES
  • Maintenance: 2 years
  • Estimated CAPEX1,866,667 THB
  • Estimated payback period4.9 years
  • Customer receives full savings after installation
  • Best for customers with available capital

Financing-Supported EPC

  • AES helps arrange financing
  • Financing term: up to 6 years
  • Interest rate: 12% per year
  • Estimated loan amount1,866,667 THB
  • Estimated monthly loan payment36,494 THB
  • Estimated monthly solar savings31,500 THB
  • Estimated net monthly cashflow-4,994 THB
  • Full ownership after loan period
  • Best for customers who want ownership with financing support

AES 100% Investment / PPA

  • AES invests 100%
  • Customer upfront investment: 0 THB
  • Electricity discount: 15%
  • Contract term: 25 years
  • Monthly electricity discount4,725 THB
  • Annual electricity discount56,700 THB
  • 25-year estimated discount value1,417,500 THB
  • Customer gets immediate electricity cost reduction
  • Best for customers who want zero CAPEX

Estimated savings are indicative and subject to site survey, load profile, roof condition, grid approval, and final commercial agreement.

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Request a Solar Feasibility Review

Submit your project parameters for a structured engineering and commercial review by the AES team.

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All calculations are preliminary estimates for feasibility discussion only. Final system size, savings, investment value, financing terms, and PPA conditions are subject to engineering survey, energy consumption profile, roof structure, regulatory requirements, grid connection approval, and final commercial agreement.