Why 8 kW gets overlooked, and when it shouldn't
Most installers in Lahore quote 5 kW or 10 kW. The number 8 rarely comes up in initial conversations because catalog systems are built around round inverter sizes. That is a habit, not a rule. An 8 kW system fits a very specific home: a 10-marla house with three ACs (two used heavily, one occasionally), a monthly bill between PKR 30,000 and PKR 50,000, and a rooftop where 10 kW worth of panels would mean climbing over a water tank or shading the next-door neighbour's terrace.
The argument for jumping to 10 kW is "more is better". The argument against, in 2026, is the NEPRA Prosumer Regulations that came into effect on February 9. Excess units exported to LESCO are now bought back at around PKR 11 per unit under net billing, not the old gross net metering rate. Oversizing a system to export units no longer pays back the way it did in 2023 and 2024. Sizing for self-consumption matters more.
If the household consumes 1,000 to 1,200 units a month and the rooftop tops out at 8 kW because of shade or tank placement, that is the right size. Going to 10 kW would just mean exporting more units at PKR 11 each, which barely covers the extra hardware cost over its lifetime.
The 2026 price for a clean 8 kW build
Panel rates in May 2026 sit at PKR 41 to 43 per watt for Tier-1 N-type bifacial Longi, Jinko, and Canadian. For 8 kW of inverter capacity, the right DC array is 9.2 to 9.5 kW (about 16 panels at 580W). The over-sizing is on purpose: it pushes the inverter to its full output across more hours of the day, especially in winter and overcast weather.
| Item | Specification | Price (PKR) |
|---|---|---|
| Solar panels | 16 x 580W Jinko N-Type or Longi Hi-Mo X10 (9,280W total) | 385,000 to 400,000 |
| Hybrid inverter | 8 kW Solis hybrid / Inverex Aerox-II / Growatt SPH 8000 | 295,000 to 380,000 |
| Mounting structure | IPN-100 galvanised, custom for roof layout | 92,000 to 115,000 |
| DC cabling | 6 mm² double-insulated, MC4 connectors, 2 strings | 35,000 to 42,000 |
| AC cabling and changeover | 10 mm² copper, changeover, ATS optional | 32,000 to 40,000 |
| DC and AC protection | Type-II SPD, fuses, DC isolator, DB | 22,000 to 28,000 |
| Earthing | Copper earth pit with two electrodes | 15,000 to 22,000 |
| Installation labour | 3 to 4 days, two engineers and helpers | 45,000 to 60,000 |
| Net metering paperwork | LESCO application, single or three phase | 30,000 to 45,000 |
Totalled honestly: an 8 kW on-grid system in Lahore lands between PKR 950,000 and PKR 1,130,000 fully installed in May 2026. With a 5.1 kWh lithium battery added, the total rises to PKR 1,240,000 to PKR 1,430,000. With a 10 kWh battery setup, it pushes to PKR 1,480,000 to PKR 1,680,000.
Inverter picks at the 8 kW size
At 8 kW the inverter market in Pakistan is reasonably mature. The honest options:
- Solis 8K hybrid single-phase: PKR 310,000 to 340,000. Best price-to-performance for residential. Strong app, decent service.
- Inverex Aerox-II 8 kVA: PKR 330,000 to 380,000. Best service network in Lahore. Walk-in support on Mall Road, Hall Road, and Davis Road.
- Growatt SPH 8000TL3 three-phase: PKR 295,000 to 320,000. Three-phase is useful for 10-marla homes that already have a three-phase meter (most do in DHA Phase 6, 7, 8, and Bahria).
- Huawei SUN2000 8KTL: PKR 470,000 plus. Top quality, weaker local service.
- Deye Hybrid 8K: PKR 320,000 to 360,000. Increasingly popular in Pakistan for battery flexibility, good for off-grid plus on-grid hybrid setups.
For a homeowner in Lahore who values local service over absolute performance, Inverex is the safest pick. For someone who prioritises features and app, Solis or Deye edge ahead. For a three-phase home, Growatt SPH 8000TL3 is the cleanest answer.
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WhatsApp +92 318 6583582Single-phase vs three-phase at 8 kW
Most 10-marla homes in DHA Phases 5 through 8, Bahria Town, parts of Wapda Town and Johar Town already have a three-phase LESCO meter because the sanctioned load is above 7 kW. If the home is on three-phase, the right inverter is also three-phase. This balances the export across all three phases at the meter and avoids the "phase imbalance penalty" that some installers gloss over.
A single-phase 8 kW inverter on a three-phase meter is technically allowed, but it loads only one phase at the meter. LESCO measures consumption phase-by-phase. The export on one phase plus the import on the other two can produce a net bill that is higher than the homeowner expects. Three-phase inverters at 8 kW cost roughly the same as their single-phase cousins now in 2026, so there is no real cost reason to go single-phase on a three-phase home.
If the home is single-phase only (most older Township, Allama Iqbal Town, and 5-marla houses are still single-phase), an 8 kW single-phase inverter is fine. The maximum residential load LESCO allows on a single-phase connection is 15 kW, so 8 kW is well inside that.
Battery: when an 8 kW home actually needs one
An 8 kW home in Lahore consumes 800 to 1,100 units a month. The split is roughly 40 percent daytime, 35 percent evening, and 25 percent overnight. The solar system handles the daytime piece automatically. The question is whether to store some of that for evening use, or just buy from LESCO.
Honest math in 2026: a 10 kWh lithium battery (Pylontech US3000C or Dyness B4850) costs around PKR 520,000 to PKR 580,000. Used to shift 7 kWh a day from solar to evening at LESCO retail rate of PKR 52 per unit, that is PKR 364 a day saved, or about PKR 11,000 a month. Annual saving is about PKR 132,000. Battery payback works out to around 4 to 5 years. Lithium iron phosphate batteries are warranted for 6,000 to 10,000 cycles, which is 16 to 27 years of daily cycling.
If the house has minimal evening use because everyone is out at work and dinner, the math weakens. If the house has heavy evening AC use in summer, the battery pays back faster.
A real DHA Phase 6 example
A 10-marla double-storey in DHA Phase 6, three-phase meter, three split ACs (two used regularly), family of four. Monthly LESCO bill last summer was around PKR 47,000, dropping to PKR 18,000 in mild months. The rooftop fits 9.2 kW of panels cleanly without shading from the adjacent house.
The installed system was 8 kW with a Growatt SPH 8000TL3 three-phase hybrid, no battery in year one. Total cost was PKR 1,085,000 including three-phase LESCO net metering paperwork.
April 2026 bill came in at PKR 7,800, against PKR 28,000 in April 2025. The owner is exporting roughly 200 to 300 units a month under the new February 2026 net billing rules at PKR 11 a unit. Most of the saving is from self-consumption, not export. Payback for this build is tracking at about 34 months, after which the system continues for another 22 years on panel warranty.
The owner is adding a 10 kWh Pylontech battery next year because June and July bills, even after solar, still hit PKR 14,000 to PKR 17,000 due to overnight AC. With the battery, the engineer projects that summer bill to drop to PKR 4,000 to PKR 6,000.
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