Solar Calculator Pakistan Guide - Size, Cost & Savings 2026
By Abaid Awan | Last Updated July 16, 2026 | Reading time: 10 min
Pakistan has some of the highest electricity tariffs in South Asia. In 2026, non-protected residential consumers are paying Rs 35–44 per unit in many DISCOs. At the same time, solar panel prices have dropped and net metering was available until NEPRA shifted new connections to a net billing model in February 2026. This guide explains how to size a solar system, what it costs, and how to calculate real savings for Pakistani homes and small businesses.
Use our Solar Calculator Pakistan to get instant numbers for your monthly bill and city.
How to Calculate Solar System Size for Your Home
The simplest method is to look at your monthly electricity bill in units (kWh). Divide by 30 to get daily usage, then divide by your city peak sun hours and system efficiency.
System Size (kW) = Monthly Units ÷ 30 ÷ Sun Hours ÷ 0.85
The 0.85 factor accounts for dust, heat, wiring loss, inverter efficiency and shading. In real Pakistani conditions, this is a safe average.
Example: Your bill shows 600 units per month and you live in Lahore with 5.3 peak sun hours. System size = 600 ÷ 30 ÷ 5.3 ÷ 0.85 = 4.4 kW. You would round up to the nearest panel count, usually 5 kW using nine or ten 550W panels.
Peak Sun Hours by Major Pakistani City
| City | Peak Sun Hours/Day | Approx. Tariff (Rs/kWh) |
|---|---|---|
| Karachi | 5.5 | 35–37 |
| Lahore | 5.3 | 34–36 |
| Islamabad | 5.2 | 34–36 |
| Rawalpindi | 5.2 | 34–36 |
| Faisalabad | 5.4 | 33–35 |
| Multan | 5.5 | 33–35 |
| Peshawar | 5.4 | 33–35 |
| Quetta | 5.6 | 32–34 |
On-Grid, Hybrid or Off-Grid: Which is Best?
Most urban Pakistani homes choose hybrid systems because they solve both high bills and load shedding. Here is the difference:
- On-grid: Cheapest. Panels + inverter only. No backup during outage. Exports surplus to grid.
- Hybrid: Panels + battery + inverter. Runs essential loads during load shedding. Still exports surplus. Best all-rounder.
- Off-grid: No WAPDA connection. Needs large battery bank and usually oversized panel array. Highest cost, full independence.
Latest Solar Panel Prices in Pakistan (July 2026)
Prices vary by brand, wattage, cell technology and grade. A-grade Tier-1 panels with proper documentation cost more but are safer for warranty and net metering.
| Brand / Technology | Wattage | Price/Watt | Price per Plate |
|---|---|---|---|
| JA Solar Mono PERC | 540–550W | Rs 26–28 | Rs 14,000–15,500 |
| Longi Hi-Mo 6 | 570W | Rs 30–31 | Rs 17,100–17,700 |
| Jinko N-Type | 575W | Rs 31 | Rs 17,800 |
| Trina Vertex Mono | 535–550W | Rs 30–53 | Rs 16,000–29,000 |
| Canadian N-Type Bifacial | 585W | Rs 44 | Rs 25,700 |
| B-grade generic | 550W | Rs 24–27 | Rs 13,000–15,000 |
Top 10 Solar Inverter Prices in Pakistan (2026)
Inverter choice matters more than most buyers think. A failed inverter can shut down the whole system. Local service support is critical in Pakistan.
| Brand | On-Grid 5kW | Hybrid 5kW | Hybrid 10kW | Warranty |
|---|---|---|---|---|
| Inverex | Rs 160k–190k | Rs 210k–260k | Rs 280k–350k | 5–10 yrs |
| Growatt | Rs 140k–170k | Rs 190k–240k | Rs 280k–350k | 5–10 yrs |
| Solis | Rs 150k–180k | Rs 220k–270k | Rs 310k–390k | 5–10 yrs |
| Huawei | Rs 180k–220k | Rs 250k–310k | Rs 350k–420k | 10 yrs |
| Fronius | Rs 210k–250k | Rs 290k–350k | Rs 400k–480k | 12 yrs |
| Knox | Rs 130k–160k | Rs 180k–220k | Rs 260k–320k | 8–10 yrs |
| Homage | Rs 120k–150k | Rs 170k–210k | Rs 240k–300k | 5–8 yrs |
| Crown | Rs 125k–155k | Rs 175k–215k | Rs 250k–310k | 1–7 yrs |
| GoodWe | Rs 160k–200k | Rs 240k–290k | Rs 330k–410k | 10 yrs |
| Ziewnic | Rs 125k–155k | Rs 175k–215k | Rs 250k–310k | 7–9 yrs |
Complete System Cost Examples
| System | On-Grid Cost | Hybrid Cost | Off-Grid Cost |
|---|---|---|---|
| 3 kW (small home) | Rs 400k–550k | Rs 620k–890k | Rs 700k–950k |
| 5 kW (medium home) | Rs 750k–980k | Rs 1.1M–1.4M | Rs 1.0M–1.5M |
| 10 kW (large home/shop) | Rs 1.0M–1.45M | Rs 1.9M–2.5M | Rs 2.2M–3.0M |
NEPRA Net Billing 2026: What Changed?
Until February 2026, Pakistan used 1:1 net metering. Every unit you exported cancelled one unit you imported. New applications now fall under NEPRA Prosumer Regulations 2026, also called net billing.
- Imported units are billed at the full consumer tariff (Rs 35–55/unit including taxes).
- Exported surplus units are bought at the National Average Energy Purchase Price, roughly Rs 10–11 per unit.
- New contracts last 5 years instead of 7.
- Existing contracts signed before the change keep old rates until expiry.
This change makes self-consumption during daytime more valuable than exporting. Size your system to match what you use when the sun is shining, not just your total monthly bill.
Net Metering / Net Billing Application Process
- Choose an AEDB-certified installer and get a single-line diagram.
- Apply to your DISCO (LESCO, IESCO, MEPCO, HESCO, SEPCO, QESCO, PESCO, K-Electric).
- DISCO inspects the site and installs a bi-directional smart meter. Meter cost is roughly Rs 18,000–28,000 paid by the consumer.
- Sign the net metering/net billing agreement.
- Start generating and exporting. Bills are adjusted monthly.
Battery Backup Options
Hybrid and off-grid systems need batteries. The two main types in Pakistan are:
- Tubular lead-acid: Cheaper (Rs 35k–50k per 200Ah battery) but shorter life and needs regular maintenance.
- Lithium LiFePO4: Expensive (Rs 80k–150k per kWh) but longer life, deeper discharge and lighter weight.
For most homes, a 5 kWh lithium battery is enough to run fans, lights, router and one small appliance during a 3–4 hour outage.
Payback Period Example
Take a 5 kW hybrid system in Lahore costing Rs 1,250,000. It generates about 700 kWh per month. If the household uses 600 kWh at Rs 35/kWh and exports 100 kWh at Rs 11/kWh, monthly savings are Rs 22,100. Annual savings are roughly Rs 265,000. Payback = 1,250,000 ÷ 265,000 = 4.7 years. After payback, the system saves money for 15–20 more years with minimal maintenance.
Frequently Asked Questions
How many solar panels do I need for a 5 kW system?
Nine to ten panels of 550W, or eight panels of 650W. The higher the wattage, the fewer panels and less roof space you need.
Can solar run AC in Pakistan?
Yes. A 5 kW hybrid system can run 1–2 inverter ACs during peak sun hours along with lights, fans and a fridge. A 10 kW system can handle 3–4 ACs.
Is net metering still worth it after 2026?
It is still worth it if your daytime consumption is high. The old 1:1 exchange was more attractive, but saving Rs 35+/unit on self-consumed solar still gives a strong payback.
How much roof space do I need?
Allow roughly 25–30 sq ft per panel. A 5 kW system with nine 550W panels needs about 250–300 sq ft of shadow-free roof facing south or south-west.
What maintenance does solar need?
Panel cleaning every 2–4 weeks in dusty areas, checking connections, and inverter health monitoring. Panels usually last 20–25 years. Inverters last 8–12 years.
Can I install solar on installments?
Some banks like Meezan Bank and Bank Alfalah offer solar financing. AEDB also announces subsidy schemes from time to time.
Use Our Free Solar Calculator
Get instant system size, cost, savings and payback numbers for your city and bill: Solar Calculator Pakistan. 100% free, no signup, no data stored.
Last Updated: July 16, 2026 | Author: Abaid Awan | Sources: NEPRA Prosumer Regulations 2026, AEDB, vendor price surveys | Contact: contact@pakcalchub.com