Solar system for load-shedding in Lahore — realistic setup

What load-shedding looks like in Lahore in May 2026

The headline LESCO position is that "load-shedding has been eliminated" on most urban Lahore feeders for paying customers. The on-the-ground reality is different. Outages still happen, but the pattern has shifted from scheduled load-shedding to a mix of unscheduled faults, scheduled maintenance, transformer trips during peak summer evenings, and feeder-specific cuts that LESCO calls "low-recovery area" management.

Three distinct outage profiles run across Lahore. Knowing which profile a home sits on changes the sizing maths.

Profile A is the well-served urban feeder. DHA Phase 1 to 5, Bahria Town main blocks, Model Town inner, parts of Gulberg, Cantt residential. Outages here are 30 to 90 minutes, two to four times a week in summer, almost always linked to transformer overload during 5 pm to 11 pm peak hours.

Profile B is the mixed-load feeder. Johar Town, Wapda Town, Iqbal Town, Garden Town, Faisal Town, much of Township. Outages run 1.5 to 3 hours, three to six times a week in summer, with one or two longer cuts of 4 to 6 hours each month when a transformer or breaker actually fails.

Profile C is the high-loss feeder. Parts of Misri Shah, Shahdara, sections of Mughalpura, older parts of Ravi Town, peri-urban areas where line losses run above 25 percent. Outages here can stack: 3 to 5 hours at a stretch, daily in peak summer, plus the same fault-driven cuts that the rest of the city sees.

Sizing for Profile A — light load-shedding

For a DHA or Cantt home with short, occasional outages, the simplest setup is a hybrid inverter with a small lithium battery. A 5 kW or 8 kW hybrid inverter paired with a 5 kWh lithium battery covers the typical 60 to 90 minute evening cut for fans, lights, a fridge, a TV and one inverter AC running at about 50 to 60 percent duty.

The battery does not need to be sized for full backup. It just needs to cover the worst-case outage. In Profile A the worst-case is about 2 hours at maybe 3 kW of household load, which is 6 kWh. A 5 kWh battery with 90 percent depth of discharge gives 4.5 kWh of usable energy, which covers the AC-and-fans evening scenario for about 90 minutes. Most Profile A homes finish their outage before the battery runs dry.

Total system cost for this configuration: PKR 800,000 to PKR 1,100,000 for a 5 kW solar plus 5 kWh battery turnkey in May 2026 with Tier-1 panels and a Deye, Solis or Knox hybrid inverter.

Sizing for Profile B — mixed load-shedding

For a Johar Town or Wapda Town home with 1.5 to 3 hour cuts a few times a week, the battery has to be larger. The same 5 kW solar with a 10 kWh lithium battery is the common sweet spot. A 10 kWh battery delivers about 9 kWh usable, which covers 3 hours of mixed load including one inverter AC, fans, fridge, lights and a TV.

For households running two inverter ACs through the evening, the right answer is an 8 kW or 10 kW solar system with a 15 kWh lithium battery. This costs more upfront but the household can ride out a 4-hour summer evening outage with both ACs running.

Cost band: PKR 1,150,000 to PKR 1,600,000 for a 5 kW solar plus 10 kWh battery, or PKR 1,700,000 to PKR 2,300,000 for the larger 8 to 10 kW solar plus 15 kWh battery setup.

Sizing for Profile C — heavy load-shedding

For homes on feeders that see daily 3 to 5 hour cuts in summer, the system becomes a genuine backup power plant rather than just a bill-reducer. The solar array needs to be large enough to recharge the battery during the daylight hours when grid is up, and the battery itself needs the capacity to ride out the longest expected outage.

The typical configuration is an 8 kW to 12 kW hybrid solar system with 15 to 20 kWh of lithium battery. The battery should be a low-voltage 51.2V or high-voltage 102.4V LiFePO4 pack with a proper BMS, paired with a hybrid inverter that supports the cycling rate this scenario demands.

Cost band: PKR 1,950,000 to PKR 2,800,000. The bill savings are larger for these households because their baseline grid consumption tends to be high, often PKR 35,000 to PKR 70,000 per month before solar. The payback period sits at 3.5 to 4.5 years.

Why a hybrid inverter is the right starting point

A pure on-grid inverter turns off when LESCO power goes down. It is a bill-reducer, not a backup system. For any Lahore household where load-shedding is a meaningful concern, a hybrid inverter is the correct starting point even if the battery is added later.

The hybrid inverter has three input sources (solar, battery, grid) and one or two output sources (essential loads, non-essential loads). When the grid drops, the inverter switches to battery-and-solar mode in under 20 milliseconds. The fridge does not even register the cut. The Wi-Fi router does not reboot. The fans keep spinning.

The trade-off is the upfront cost. A hybrid inverter in May 2026 costs PKR 280,000 to PKR 540,000 depending on brand and kW rating. A pure on-grid inverter of the same kW rating is PKR 140,000 to PKR 280,000. The hybrid carries a premium of roughly PKR 140,000 to PKR 260,000, which is the price of being load-shedding-proof.

Battery sizing — the honest calculation

The right way to size a battery for Lahore load-shedding is to start from the worst-case outage duration on the household's feeder, multiply by the household's running load during that outage, and add a 20 percent safety margin.

For a typical mixed-load Lahore home, the running load during an outage is 1.8 to 2.5 kW if one inverter AC is operating, dropping to 0.6 to 1.0 kW without the AC. A 3-hour worst-case outage at 2 kW average gives 6 kWh. With the 20 percent margin and accounting for 90 percent depth of discharge on a lithium battery, the rated battery size needs to be about 8 kWh. The 10 kWh option in the market is the comfortable choice.

Tubular batteries are still sold in Lahore but for load-shedding backup in 2026 they are no longer the right answer. The cycle life is too short, the depth of discharge is too shallow, and the total cost of ownership over 10 years is higher than lithium even after the larger upfront price gap.

The mistake most Lahore buyers make

The most common error is over-sizing the solar array while under-sizing the battery. A 12 kW solar system with a 5 kWh battery produces plenty of energy during the day but cannot ride out a 3-hour evening outage with the AC running. The battery is empty in 90 minutes and the household sits in the dark for the rest of the cut.

For load-shedding-driven buyers, the right rule of thumb is to spend roughly 35 to 45 percent of the system budget on battery and inverter, not on extra panels. A 6 kW solar plus 10 kWh battery is a better load-shedding system than 10 kW solar plus 5 kWh battery, even though the second one looks more impressive on a quote.