Technically Defensible Solar Sizing
Karachi Solar Calculator
Estimate your recommended solar system size, monthly generation, and 25-year financial savings based on local Karachi solar resource data and K-Electric tariffs.
Select System Inputs
Karachi Model v1.0 (NEPRA 2026)PKR
PKR 10kPKR 250kPKR 500k+
Higher daytime consumption increases self-consumed solar savings relative to net-billing exports.
Calculated Sizing Specs
Est. Panel Count:18 Panels (620W N-Type)
Self-Consumption:70% Daytime
Calculated Solar Output
Recommended Solar System Results
NEPRA 2026 Net Billing Compliant
Recommended System
11 kW
Optimal size for KarachiEst. Annual Generation
17,078 kWh
~1,423 kWh / monthEst. Year-1 Savings
Rs 679,176
Combined 3-stream savingsEst. Payback Period
2.2 Years
Turnkey ROI estimate3-Stream Net Billing Financial Breakdown (Estimated)
1. Self-Consumed Solar (11,955 kWh/yr @ PKR 53.33/kWh):Rs 637,526
2. Exported Solar (5,123 kWh/yr @ NAEPP buyback PKR 8.13/kWh):Rs 41,650
Total Year-1 Net Annual Savings:Rs 679,176
Estimated 25-Year Cumulative Savings:Rs 44,951,984
Estimated Status: All figures shown are ESTIMATED values for illustrative purposes. Actual production and financial savings depend on site conditions, system design, equipment selection, shading analysis, utility tariffs, consumption patterns, and regulatory policies. Final figures require a professional engineering site assessment.
Regulatory Note: Tariff rates and export buyback rates are estimates based on NEPRA notifications effective as of August 2026. Billed rates vary based on fuel cost adjustments (FCA) and government taxes. (Last verified: 2026-08-10).
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