Solar Calculator Pakistan

Standard Assumptions & Regulatory Framework

This planning calculator calculates financial parameters based on NEPRA prosumer net billing regulations in Pakistan. In addition, calculations are adjusted based on the following engineering and structural baselines:

• AEDB Approved Components: System sizing is based on high-purity, Tier-1 monocrystalline half-cell bifacial panels (A grade) with certified product efficiencies above 21.5%.
• Structure Spacing (Wind Load Factor): Area requirements are set at 34 sq ft per panel, incorporating walking walkways and shadow spacing arrays to prevent self-shading during low-winter angles. This ensures structural safety during Punjab dust storms or Sindh wind corridors.
• Heat Degradation Loss: Standard PV module temperature coefficient decreases output by ~0.35% for every degree above 25°C. The 15% default loss factor incorporates this extreme summer temperature dip across cities like Multan, Lahore, and Karachi.
• Net Metering Slabs: Imported units are billed progressively under NEPRA domestic slabs. Self-consumption during peak sun hours completely offsets high retail rates. Exported surplus units are credited at the standard buyback index.

Common Installer Scams & Verification Safeguards in Pakistan

As solar demand spikes across Pakistan, many fraudulent installers target unwary residential buyers. Protect your investment using these critical checkpoints:

• The B-Grade Panel Fraud: Fraudulent dealers often scrub B-grade or cracked cells and stamp fake Tier-1 brand barcodes. Always demand flash-test reports and verify serial numbers directly on the manufacturer's website.
• Under-Sized Earthing & Grounding: Many budget installers skip dual copper earthing pits or use thin cables. Improper earthing can destroy your hybrid inverter during lightning strikes. Insist on a digital resistance check (must be under 2 ohms).
• Fake AEDB Licensing claims: Installers must hold active AEDB licenses to legally process net-metering applications. Verify their certification status on the official AEDB web portal before making a down payment.

For official rules, please refer to the NEPRA Portal or the AEDB Portal. For precise quotes and roof loading calculations, obtain three on-site vendor evaluations from certified engineers in your city.