Solar & Renewable EnergyUpdated: 2026-08-21
Solar Savings & Load Calculator
A comprehensive solar load and net metering estimation utility tailored for residential and commercial premises across Pakistan. Computes optimal solar panel wattage, Tier-1 panel quantities, inverter rating (kVA), battery bank sizing, and estimated ROI payback period in years based on DISCO electricity tariffs.
Solar Sizing Inputs
Choose calculation basis and system architecture.
Technical Specifications & Methodology
Solar Sizing & Payback Methodology
Calculation models assume an average daily peak sun-hour exposure of 4.8 to 5.2 hours across Pakistan. Panel requirements are computed using 550W Tier-1 Monocrystalline modules with a 20% system buffer for inverter and transmission efficiency.
Mathematical Formulas Applied:
Required kW = (Monthly Units / 30 Days) / 4.8 Peak Sun Hours
550W Panels Count = Math.ceil((Required kW * 1000) / 550)
Estimated Monthly Savings (PKR) = Monthly Units * PKR Base Tariff (approx Rs. 35-45/unit)
Engineering Notes:
Payback estimations are indicative and vary with seasonal solar irradiance and DISCO tariff revisions.
Net metering approvals and three-phase bidirectional meters require NEPRA compliance.
Frequently Asked Questions
Everything You Need to Know About Solar Savings & Load Calculator
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