Solar PV System Calculator

Design and analyze your photovoltaic system with NREL weather data

PV System Calculator Configuration

Location
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System Type
System Configuration
Ratio of module area to ground area (typical range: 0.2-0.9)
Temperature Model
Financial Configuration
Total system cost including all components
Standard warranty period: 25 years
/kW-year
Industry standard: $15/kW-year
/kWh
Bangladesh standard: 7 BDT/kWh
Industry standard: 0.5% per year
Historical average: 2.5% per year
API Configuration
Standards Reference
NEC Standards (US)
  • NEC 690.7: Max system voltage (1000V residential, 1500V commercial)
  • NEC 690.8: Circuit sizing and current
  • NEC 690.9: Overcurrent protection
  • NEC 705.12: Point of connection
  • NEC 690.31: PV wire requirements
  • NEC 690.41: System grounding
IEC Standards
  • IEC 61215: Module design qualification
  • IEC 61730: Module safety qualification
  • IEC 62446: Grid connected systems
  • IEC 61683: Power conditioners
  • IEC 61724: Performance monitoring
  • IEC 62109: Inverter safety
Quick Design Rules
  • DC/AC Ratio: 1.1 to 1.3
  • String Sizing: Stay within MPPT window
  • Temperature: -10°C to 75°C design range
  • Voltage Drop: Max 2% DC, 1.5% AC
  • Ground Coverage Ratio: 0.4 to 0.7
  • Tilt Angle: Typically latitude ±15°
Safety Standards
  • UL 1741: Inverter certification
  • UL 1703: PV module safety
  • IEEE 1547: Grid interconnection
House Energy Calculator
Daily Energy Consumption
Total kWh/day: 0.00
Recommended System Size: 0.00 kW

Installation Location

System Size Selection: Manual or Drawing Area Based
Desired DC System Size kW
Total Savings (25 years)

System Size

LCOE

System Area

Annual Energy Production

Annual Cost Savings

Payback Period

Annual CO₂ Reduction

Site Information
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Country: -
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System Performance

Peak DC Power: -

Peak AC Power: -

Capacity Factor: -

Performance Ratio: -

Annual Energy: -

Specific Yield: -

Weather Analysis
Monthly Energy Profile
Daily Energy Profile
System Components
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Module Power: -
Modules in Series: -
Parallel Strings: -
Total Modules: -
Inverter Details
Inverter Type: -
Inverter Power: -
Number of Inverters: -
DC/AC Ratio: -
Cost Breakdown
Financial Metrics
LCOE: -
NPV: -
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Cumulative Cash Flow