Off-grid solar in Lahore: when it actually makes sense (and when it doesn't)

What off-grid actually means

Off-grid solar means no grid connection at all. No LESCO wire feeding the house. No bi-directional meter. No fallback at 9pm when the battery is flat. Every single watt-hour the property consumes has to come from the panels, through the inverter, into the battery, and out to the load. If the battery runs out, the lights go out.

That is a very different proposition from a hybrid system, which keeps a grid connection for backup and only uses the battery for the evening peak. Most people who say they want off-grid actually want hybrid. The two get confused often.

Why most Lahore homes should not go full off-grid

For a typical house inside Lahore on a regular LESCO connection, off-grid is the wrong answer for three reasons.

Cost. To go properly off-grid for a four-bedroom Lahore house running two ACs in summer, the battery has to cover an evening, an overnight, and a cloudy-day buffer. That pushes the bank from a comfortable 10kWh in a hybrid setup to 25kWh or more in an off-grid one. At LiFePO4 prices near PKR 50,000 per usable kWh installed, that is an extra PKR 7 to PKR 8 lakh on storage alone.

No fallback. A hybrid system fails gracefully. If the battery runs low at 4am, the house pulls from the grid. Light still works. Fridge stays cold. An off-grid system has no such cushion. A monsoon week, a faulty BMS, or one dead battery module, and the house goes dark until the sun comes out.

Wasted potential. The grid in Lahore, even with load shedding, is still cheaper for a few stray night-time units than maintaining a battery bank large enough to never need it. Paying PKR 55 a unit for two hundred units a month is around PKR 11,000. An oversized battery covering that same load costs many multiples of that across its life.

The three cases where off-grid genuinely wins

1. Rural farms and tube wells

This is the real mass-market off-grid use case in Punjab. Many agricultural plots sit several kilometres from the nearest WAPDA line. Getting a new connection extended, even where it is possible, runs into long timelines and high transformer costs, often PKR 6 to PKR 12 lakh just to get a wire to the plot, before any electricity is used. For a tube well or a farm dwelling, a dedicated off-grid solar setup pays back faster than the grid extension itself.

The Punjab government has leaned heavily into this through the CM Solarization of Agri Tubewells Program. The scheme covers up to 8,000 tubewells with a subsidy structure where the government bears roughly 75 to 80 percent of the cost and the farmer pays the remaining 20 to 25 percent in instalments. Eligibility requires being a Punjab resident, owning at least one acre of agricultural land in the revenue limits of the application district, with a tenant route also available against an eleven-month lease and Patwari verification. Applications run through agriculture.punjab.gov.pk.

2. Construction sites and temporary structures

A building under construction in Bahria Town or DHA Phase 9 typically has no permanent connection yet. Builders need lights, a water pump, charging for tools, and sometimes a welding setup. Diesel generators run roughly PKR 75 to PKR 95 per unit once fuel, oil changes, and noise complaints are counted. A small portable off-grid setup, say 3kW of panels with a 5kWh lithium battery on a metal frame, pays back in under two years and then moves to the next site. Same logic for outdoor cabins, site offices, and temporary medical camps.

3. People who want genuine energy independence and have the budget

Some clients simply do not want any relationship with LESCO. Frequent outages, billing disputes, or a particular philosophical preference for self-sufficiency. For an existing farmhouse on the outskirts of Lahore with an existing grid connection, this is a values-driven choice rather than a strictly financial one. As long as the buyer understands that the system will cost roughly 30 to 50 percent more than the hybrid equivalent and demands tighter maintenance, off-grid is a perfectly valid path.

How off-grid sizing differs from hybrid sizing

Two rules of thumb that field engineers use:

Battery: an off-grid bank is typically 1.5 to 2 times larger than the hybrid bank for the same house. The reason is autonomy. A hybrid system stores enough for the evening peak, expecting the grid to cover the rest. An off-grid system stores enough for the evening peak, the overnight, and a day of reserve for cloudy weather.

Panels: an off-grid array is typically 15 to 25 percent larger than the hybrid array. The extra panel area covers winter mornings, December haze, and the monsoon week where production drops by half. Oversizing during summer is the price of staying lit during January.

Real cost example: 10kW off-grid for a farmhouse near Manga Mandi

This is a representative bill of quantities for a working farmhouse that runs lights, fans, a fridge-freezer, a small AC, a TV, a water pump, and a few outdoor lights. The owner spends roughly 12 hours a day on the property and runs the AC for 5 to 6 hours in the evening through summer.

Component	Spec	Indicative price (2026, PKR)
Panels	12kW array, N-type bifacial 615W (around 20 panels), Jinko or Canadian	4,20,000 to 4,60,000
Off-grid / hybrid inverter	10kW, single-phase, with off-grid mode and high MPPT	4,10,000 to 4,50,000
LiFePO4 battery	20kWh usable (4 x 5.12kWh, Dyness or Pylontech class)	9,60,000 to 11,50,000
Mounting structure	L2 or L3 rooftop frame, galvanised, wind-rated	1,10,000 to 1,40,000
BoS, cables, breakers, surge protection, earthing	DC and AC distribution, fuses, lugs	1,40,000 to 1,80,000
Installation, commissioning, transport	Lahore outskirts site	1,20,000 to 1,60,000
Total	10kW off-grid, 20kWh storage	22.6 to 25.4 lakh

For comparison, the same farmhouse on a hybrid system with a smaller 10kWh battery and an existing LESCO backup would land closer to PKR 16 to PKR 18 lakh. The off-grid premium is the storage and the slightly larger array.

Battery sizing for off-grid: the kWh-per-kW rule

A working rule for Punjab conditions: budget 1.5 to 2 kWh of usable battery storage per 1kW of panel for an off-grid setup. A 10kW array needs roughly 15 to 20kWh of usable battery. Add another 25 percent if the site sees heavy winter use or has known shading. Autonomy days, meaning how long the battery can carry the load with zero solar generation, should be set to one for budget builds and two for sites where comfort matters and a generator is not desired.

Generator backup: the unspoken truth of off-grid in Punjab

Plenty of off-grid sites in Punjab still keep a 3 to 5 kVA petrol or diesel generator on the side. It does not run often. Maybe ten hours a month in the worst week of August monsoon. The generator is cheap insurance against a string of overcast days that would otherwise force the battery to deep-discharge and shorten its life. A PKR 70,000 generator that runs sixty hours a year is worth more than another battery module that sits idle eleven months out of twelve.

Buyers against any fossil-fuel backup can size the battery for three or four days of autonomy. The cost goes up sharply.

Solar tube wells specifically

This is the part of the off-grid market that actually moves volume in Punjab. A 5HP submersible tube well in a one-acre field runs on 5 to 7 kW of panels in a direct-DC or AC-coupled solar pumping setup, with no battery at all. The pump runs when the sun shines, which matches when the field needs water. Costs land between PKR 6 lakh and PKR 9 lakh before subsidy, dropping to roughly PKR 1.5 lakh to PKR 2.5 lakh out-of-pocket under the CM scheme. Payback against diesel and electricity bills is 2 to 3 years even unsubsidised. Under the CM subsidy, payback can happen inside the first season.

This is the cleanest case in the Pakistani solar market. No buyback rate, no net billing math, no transformer loading rules. Just panels, an inverter, a pump, and water.

Maintenance reality of off-grid

Off-grid systems demand more attention than hybrid ones. The grid forgives mistakes. A battery does not. A short checklist for off-grid owners:

• Battery health check every six months. Voltage balance across modules, BMS log review, terminal torque check.
• Panel cleaning every 4 to 6 weeks during the dust season (October through April in Punjab). Dust loss can shave 15 to 20 percent off production in a bad month.
• Inverter air filter and fan check every quarter. Inverters die hot, and a clogged fan is the most common failure point.
• Cable and connector inspection once a year. Rodents in rural sites chew through DC strings more often than people admit.
• Monthly review of the load. Adding a second AC or a new freezer mid-summer is the classic way to break an off-grid system.

A hybrid system tolerates negligence. An off-grid system does not. Anyone buying off-grid should commit to the maintenance routine or sign an annual maintenance contract with the installer.

Common questions

Can a normal Lahore house run fully off-grid?

Yes, technically, with enough panels and battery. The question is whether it makes sense financially. For a city house with a working LESCO connection, hybrid wins. For a remote farmhouse with no usable grid, off-grid wins.

How much battery does an off-grid system need?

Roughly 1.5 to 2 kWh of usable storage per 1kW of panels. A 10kW off-grid system therefore needs 15 to 20kWh of LiFePO4 storage. Lead-acid still exists in the market but is rarely the right choice in 2026 because of cycle life and depth-of-discharge limits.

Does off-grid qualify for net metering?

No. By definition there is no grid connection, so there is nothing to feed back. The recent net billing changes under SRO 251(I)/2026 are irrelevant to a true off-grid setup.

What happens during a week-long monsoon?

If the system is sized for one day of autonomy, the battery will struggle by day three of overcast weather. Practical options are a small standby generator, a slightly larger battery bank, or a planned reduction in load during such weeks. Most working off-grid sites in Punjab use the generator route because it is cheaper.

Is the CM Punjab tube well subsidy still open in 2026?

Yes, the CM Solarization of Agri Tubewells Program is running through 2026 with applications managed by the Punjab Agriculture Department at agriculture.punjab.gov.pk. Eligibility, documentation, and slot allocation rules apply. The scheme has a fixed number of units each cycle and tends to close once filled, so timing the application matters.