How accurate is this solar calculator for Pakistani cities?

The calculator is calibrated for major Pakistani irradiation zones (Karachi, Lahore, Islamabad, Faisalabad, Multan, Peshawar, Quetta) using average peak sun hours of 4.8–5.2 hrs/day.

What type of solar panels does Skytech recommend?

We recommend Tier-1 A-grade Monocrystalline Half-Cut Perc / TOPCon panels (e.g. LONGi, Canadian Solar, Jinko) for maximum conversion efficiency under high summer temperatures.

Can I request a professional rooftop survey?

Yes, Skytech provides complete turnkey solar engineering, net metering documentation, and verified installation services across Pakistan.

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.

Calculation Basis

Average Monthly Electricity Bill (PKR)

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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