☀️

House Load Calculator & Solar System Designer

Calculate your home's electricity load, get exact solar panel count, inverter size, wiring specs and full PKR cost — built for Pakistan.

—
Panels Needed
—
System Size
—
Payback Years
—
Monthly Savings

Advertisement

📢 Ad Space — Leaderboard (728×90) — Add AdSense code here

Appliances & Load

0 W total
Add Custom Appliance

Peak Sun Hours

5.0 hrs
Presets:
Pakistan averages 4.5–6.5 peak sun hours. Karachi and Quetta get the most; Lahore and Islamabad slightly less in winter.

Load Analysis

Peak Load
0 W
Daily Usage
0 kWh
Monthly
0 kWh
Add your appliances to see personalized system recommendations.

System Recommendations

On-Grid (Grid-Tied)
On-Grid Solar System
No battery. Feeds excess power back to WAPDA via net metering. Best if load shedding is minimal in your area.
On-grid systems shut down during power outages (anti-islanding). Not suitable for areas with frequent load shedding.
Recommended — Best Value
Hybrid Solar System
Solar + Battery + Grid backup. Powers critical loads during outages. Smart switching between sources. Most popular in Pakistan.
Hybrid inverters allow net metering and battery charging simultaneously. Ideal for Pakistan's load shedding conditions.
Off-Grid (Full Independence)
Off-Grid Solar System
100% independent from the grid. Requires a larger battery bank to cover nights and cloudy days. Higher upfront cost.
Off-grid is ideal for remote areas or locations with unreliable grid supply. Budget for 2–3 days of battery autonomy.

Wiring & Cable Specifications

ConnectionCable SizeTypeNotes

Safety & Protection Devices

Always use a NEPRA-licensed electrician. Improper solar wiring is a leading cause of residential fires in Pakistan. All equipment should be IEC or UL certified.

Advertisement

📢 Ad Space — Rectangle (300×250 or responsive) — Add AdSense code here

Cost Estimate (PKR)

Hybrid System
Total Estimated Cost
—

Savings & Return on Investment

Monthly Bill Saved
—
Payback Period
—
25-Year Savings
—

* Estimates based on PKR 50/kWh blended tariff. Actual savings depend on your DISCO slab rate and net metering policy.

NEPRA Net Metering

Frequently Asked Questions

How many solar panels do I need in Pakistan?

It depends on your daily usage. A typical Pakistani home using 15–20 kWh/day needs 10–14 panels of 400W each. Use our calculator above to enter your exact appliances and get a personalized count based on your sun hours.

5kW solar system cost in Pakistan 2025?

A 5kW hybrid solar system costs approximately PKR 700,000–900,000 in 2025, including 400W Mono PERC panels, hybrid inverter, LiFePO4 battery bank, wiring, mounting structure, and certified installation labor.

Best solar system for load shedding Pakistan?

A Hybrid solar system is best for Pakistan's load shedding. It uses solar + LiFePO4 battery during outages and switches to WAPDA when needed. Excess power can be sold back via NEPRA net metering.

Peak sun hours in Pakistan by city?

Karachi & Quetta: 6–6.5 hrs/day. Lahore & Multan: 5–5.5 hrs. Islamabad & Peshawar: 4.5–5 hrs. More sun hours means fewer panels needed for the same energy output.

What wire size for solar panels in Pakistan?

DC panel to combiner: 4–6mm² TUV PV cable. Combiner to inverter: 6–10mm² DC. AC output: 6–10mm² copper multicore. Battery cables: 35–50mm² flexible copper. Always use a NEPRA-licensed electrician.

How does WAPDA net metering work?

NEPRA's net metering lets you sell excess solar power back to your DISCO (LESCO, KESC, MEPCO etc.) to offset your bill. You need a NEPRA-approved bidirectional meter. Approval takes 60–90 days through your DISCO.

Advertisement

📢 Ad Space — Bottom Leaderboard (728×90) — Replace with AdSense code

Pakistan's Most Detailed Free Load & Solar System Calculator

LoadCalculator.site helps Pakistani homeowners design the right solar system before spending a single rupee. Enter your appliances — ACs, refrigerator, fans, water pump, lights — along with daily usage hours and your city's peak sun hours to instantly calculate total house load, daily kWh, and monthly consumption.

The tool recommends three complete solar solutions: On-Grid (net metering with WAPDA, no battery), Hybrid (solar + LiFePO4 battery + grid — most popular in Pakistan for load shedding), and Off-Grid (full independence, ideal for remote areas). Each recommendation includes exact 400W Mono PERC panel count, inverter kW, battery Ah at 48V, MPPT charge controller amperage, and all required protection devices.

The integrated wiring guide covers cable sizes for every connection and all safety equipment per IEC and NEPRA standards. The cost section provides an itemized PKR estimate with monthly savings, payback period, and 25-year ROI. Use the print button to save a PDF quote for your solar installer.