How many units does an 8kW solar system produce daily in Pakistan?

An 8kW Tier-1 N-Type TOPCon system generates an average of 28 to 34 units (kWh) per day in Pakistan, producing approximately 850 to 1,000 units per month depending on city solar irradiance.

How much lithium battery capacity is needed to run a 1.5-ton AC at night?

A standard 1.5-ton inverter air conditioner consumes roughly 4.0 to 5.5 kWh of energy during an 8-hour night cycle. A single 5.12kWh 48V/51.2V LiFePO4 wall-mount battery is required per AC.

What is the typical payback period for a residential solar system in Pakistan?

Given current WAPDA/DISCO tariff rates exceeding Rs. 50 per unit, standard residential hybrid and on-grid solar installations achieve full capital payback within 2.5 to 3.2 years.

Solar System Calculator Pakistan (2026): Cost, Units & Battery Sizing

Your Energy Usage & Location

Enter your city and current electricity bill or home appliances

⚡ Calculating...

📍 Select Your City / DISCO ☀️ 4.7 Sun Hours/day

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Covers Islamabad, Rawalpindi, Attock, Jhelum, and Chakwal

Monthly Electricity Bill (PKR) ≈ 384 Units / Month

Rs.

Rs. 15k Rs. 50k Rs. 100k Rs. 300k+

Enter exact monthly units (kWh) if known

Estimated Daily Load: ~27 kWh/day (≈ Rs. 71,500/mo)

❄️

Inverter AC (1.5 Ton) Master / Hall

~13.5 units/day (10h usage)

❄️

Inverter AC (1.0 Ton) Bed / Study

~9.0 units/day (10h usage)

🌀

Ceiling Fans

Avg. 14 hrs/day

💡

LED Lights & Tubes

Energy savers

🚰

Water Pump / Motor (1 HP)

1-2 hrs filling daily

🧊

Refrigerator / Freezer

24h cooling

Step 1 of 3: Configure your energy usage

Choose System Architecture & Brands

Select Hybrid or On-Grid, and pick your verified equipment manufacturers

Choose System Architecture

🔋 Recommended

Hybrid System

Solar + Battery Storage + Net-Metering. Powers ACs & lights during outages.

⚡ No Battery

Pure On-Grid

Net-Metering export system. Lowest upfront cost, runs only when grid is active.

Night Air Conditioning Backup

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💡 A 1.5-ton inverter AC consumes approx. 4.5 – 5 kWh over an 8-hour sleep cycle.

⚙️ Select Hardware Brand & View Datasheets

Choose your preferred tier-1 manufacturer for inverters, batteries, and solar panels.

Tier-1 Verified

Inverter Manufacturer: ← Swipe to compare all brands →

LiFePO4 Lithium Battery: ← Swipe to compare all brands →

Tier-1 585W TOPCon Modules: ← Swipe to compare all brands →

Your Recommended Solution

Engineered solar feasibility output & live pricing

Verified Sizing

Recommended System Capacity

8 kW Tier-1 Package

Offsets your monthly bill and provides continuous home backup.

Est. Generation

~883 Units

produced per month

💰

Est. Monthly Savings

Rs. 36,375

Save ~Rs. 436,000 every year

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Capital Payback

~2.8 Yrs

Rapid return on investment

Estimated Turnkey Cost Range Ground Market 2026

Rs. 1,130,880 – Rs. 1,280,020

*Includes Tier-1 panels, smart inverter, battery, galvanized framing, DC safety gear, cabling, and complete net-metering processing.

📋 What's Included in Your Package

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💬 Request Official Quotation on WhatsApp →

🔒 Free estimate • No obligation • Direct engineering consultation from Helixa Energy

1 Engineering Sizing Formulas

A. Billed Units Calculation: Units (kWh) = Inverse NEPRA Slab Solver (Base + Taxes)

Billed unit rates include Base Slab + FPA + QTA + FC Surcharge (Rs. 3.23) + 18% GST.

B. Appliance Load Model:

• 1.5 Ton AC: 13.5 kWh/day (10h)
• 1.0 Ton AC: 9.0 kWh/day (10h)
• Fan: 1.0 kWh/day • LED: 0.11 kWh/day
• Water Pump: 1.5 kWh/day • Fridge: 2.8 kWh/day

C. Solar Sizing & Derate: Raw kW = Daily Units ÷ (PSH × 0.80)

0.80 accounts for inverter efficiency, cabling resistance, dust, and temperature derating.

2 Official Regulatory References

🏛️ NEPRA Tariff Gazettes

Uniform tariff schedule (SRO 2024–2026) and Net-Metering Regulations for distributed generation.

⚡ CPPA-G Fuel Adjustments

Monthly Fuel Price Adjustments (FPA) & QTA across IESCO, LESCO, KE, FESCO, GEPCO, MEPCO, PESCO, HESCO, QESCO.

☀️ World Bank Solar Atlas

Direct horizontal irradiance (GHI) and photovoltaic yield data calibrated for Pakistan geographical zones.

3 Payback ROI & Disclaimer

Payback Period Calculation: Payback = Total Cost ÷ Annual Savings

Given Pakistan's current tariff rates exceeding Rs. 50/unit, Tier-1 solar systems typically achieve complete capital payback within 2.3 to 3.2 years.

⚖️ Engineering Safety Disclaimer:

Projections are engineering estimates based on prevailing NEPRA tariffs and standard rooftop conditions. Actual generation may vary based on tilt, shading, and DISCO gazettes.

System Capacity	Daily Output	Recommended Storage	Avg. Monthly Savings	Est. Investment Range
5 kW On-Grid / Hybrid	18 – 22 Units	Optional / 5.12 kWh	Rs. 25,000 – 30,000	Rs. 850,000 – 1,050,000
8 kW Hybrid Storage	30 – 35 Units	5.12 kWh LiFePO4	Rs. 40,000 – 48,000	Rs. 1,350,000 – 1,520,000
10 kW Hybrid / On-Grid	38 – 44 Units	5.12 – 10.24 kWh	Rs. 52,000 – 62,000	Rs. 1,580,000 – 1,850,000
12 kW Heavy Commercial	46 – 54 Units	10.24 – 15 kWh	Rs. 65,000 – 78,000	Rs. 1,950,000 – 2,250,000

Solar Sizing & Savings Calculator Pakistan

Your Energy Usage & Location

Choose System Architecture & Brands

Your Recommended Solution

📋 What's Included in Your Package

How We Calculate: Formulas & Official Data Sources

Pakistan Solar System Benchmark Pricing & Sizing Guide (2026)

Frequently Asked Questions (Net-Metering & Battery Storage)

Q. Why calculate solar requirements using Hybrid + Battery in Pakistan?

Q. Are Tier-1 585W N-Type TOPCon panels compatible with existing roofs?

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