Guides · Faisalabad, Lahore, Punjab
Can You Run Your Whole House on Solar?
Short answer
Yes, you can run your whole house on solar, but what that takes depends on what you mean. Running every appliance during sunny hours needs a correctly sized system and is very achievable; running the whole house through the night and through winter without the grid needs a large battery, a bigger inverter and more panels, and is rarely the best value in Punjab. For most homes the practical answer is a hybrid system that runs the whole house in the day, carries the essentials (or more) at night and in load-shedding, and keeps the grid as backup.
This guide explains the three meanings of "whole house on solar", what each needs, and where the hard limits are.
Three things people mean by "whole house on solar"
| What you want | What it needs | How practical in Punjab |
|---|---|---|
| 1. Daytime whole house: every appliance runs on solar while the sun is up | Panels and an inverter sized for your daytime load; grid at night | Very practical for most homes |
| 2. Whole house by day, essentials or more at night and in load-shedding | Above, plus a hybrid inverter and a battery sized for chosen night loads | Practical; the most common good design |
| 3. Whole house 24 hours, all seasons, no grid | Large battery, large inverter, panels sized for winter, often a generator | Possible but costly; usually only where the grid is weak or absent |
The rest of this page explains why level 3 is so much harder than level 1.
Whole house on solar
Day
Solar runs the house
Evening
Battery carries the load
Cloudy days
Grid or generator tops up
The four limits that decide it
1. Inverter power: can it carry everything at once?
The inverter decides how many appliances can run at the same moment. Add up what might run together: two or three ACs, the fridge, the water motor starting, an iron or a microwave, and a kettle. Motors and compressors draw a surge when they start, several times their running power for a moment.
If that total is more than the inverter's continuous rating, it trips on overload, even with a full battery and bright sun. Big houses often need a three-phase inverter or two inverters working together. See three-phase vs single-phase inverters and running two inverters in parallel.
2. Battery energy: can it last the night?
At night every unit comes from the battery. A whole house with ACs can use as much at night as in the day. Our guide to batteries for a full night of backup works through night-only scenarios step by step, and the battery sizing guide explains the basic method.
3. Panel energy: can it run the house and refill the battery?
In the day, panels must run the house and recharge the battery for the coming night. A system that covers the daytime but leaves the battery half full by sunset will not get you through the night.
4. Winter, fog and smog
Panels produce much less in December and January, and fog or smog can cut output for days. A system sized to run the house fully in May may fall well short in January. See solar in fog and smog and units per kW in Punjab.
An example 10 marla house, worked through
This is round illustrative arithmetic, not a design and not measured data from any home.
Summer day, example loads:
| Period | Example loads | Energy (illustrative) |
|---|---|---|
| Daytime, about 9 AM to 5 PM | 2 inverter ACs averaging 1 kW each for 8 hours, plus fridge, fans, lights, water motor, washing | about 22 kWh |
| Evening and night, about 5 PM to 9 AM | 2 ACs for 8 hours, plus fans, lights, fridge, router for 16 hours | about 24 kWh |
| Whole day | about 46 kWh |
What level 3 (24 hours, no grid) would need in summer:
- Battery: night energy of about 24 kWh, divided by about 0.85 for depth of discharge and losses, is roughly 28 kWh of battery.
- Panels: about 46 kWh for the day plus battery charging losses, say 50 kWh. At an illustrative 5 useful sun hours, that is about 10 kW of panels, before any allowance for dust, heat and cloudy days.
- Inverter: enough to start an AC while another runs, with the motor and kitchen loads on top, which in a house like this usually points to a three-phase hybrid or parallel inverters.
What changes in winter: the AC load disappears, but useful sun hours fall, fog comes, and many homes add electric water heating or room heaters. A system that balanced in summer can run short for several days in a row. Covering that fully needs either more panels and battery than summer requires, or a backup source.
Level 2 for the same house: keep the 10 kW of panels and the hybrid inverter, but size the battery for one AC for part of the night plus essentials, perhaps 10 to 15 kWh, and let the grid carry the rest when it is available. The cost falls sharply and you still have backup in load-shedding.
Why on-grid systems cannot run the house in load-shedding
An on-grid inverter switches off when the grid fails. This is a safety feature that protects line staff working on the network. So a house with an on-grid system has no solar power during load-shedding, even at noon. To run the house in outages you need a hybrid or off-grid inverter. See can a solar inverter work without a battery and hybrid vs on-grid vs off-grid. If you are thinking of leaving the grid entirely, read when off-grid makes sense first.
The loads that make "whole house" hard
- ACs at night. One inverter AC overnight can use more energy than every other night load combined. See solar for AC.
- Electric water heating and room heaters in winter. Heavy loads exactly when solar is weakest.
- Evening cooking on induction. Fine at lunchtime; heavy on the battery at dinner. See cooking on solar.
- Charging an electric car at night. It can need as much energy as the rest of the night combined. Charge in the day where you can; see EV charging with solar.
If you plan to move cooking, heating and transport to electricity as well, read our guide to the all-electric home.
Roof space and sanctioned load
Two practical checks often cap the size before cost does:
- Roof space. Ten kW of modern panels needs a fair amount of clear, unshaded roof. Check yours with solar panel size in feet and system size by marla and kanal.
- Sanctioned load. Under the 2026 net billing rules, the system you connect for export cannot exceed your sanctioned load. A large whole-house system may need a load increase first; see increasing your sanctioned load.
The practical middle route
For most Punjab homes, the best-value design is:
- Panels sized to cover your daytime use, including daytime ACs and the water motor.
- A hybrid inverter large enough for your real simultaneous load.
- A battery sized for the night loads you actually care about, often essentials plus one bedroom AC for part of the night.
- The grid as backup, used at night when it is available and for long winter spells.
- Good habits: run the washing, ironing and motor in sun hours. See solar load management.
This gets most of your energy from solar and keeps the lights and fans on in load-shedding, without paying for a battery big enough for the worst winter week. Whether that is worth it for your house depends on your bills; see is solar worth it in 2026.
How Solar Works Pakistan designs whole-house systems
We start from your 12 months of bills and a list of what you want running at night and in load-shedding. Our in-house engineers then size the panels, inverter and battery together, check the roof and connection at the site survey, and show you what each level would need. We supply panels from LONGi, JinkoSolar, Canadian Solar, JA Solar, AIKO and others, hybrid inverters from brands including Huawei, Sungrow, Solis and GoodWe, and batteries from Luminey and current Huawei and Sungrow options. Sizes and prices are on our solar system price and lithium battery price pages, and the solar calculator gives a first estimate.
Get today's price or a free site survey
- WhatsApp or call: 0336 666 4321
- Email: info@solarworks.pk
- Head office: Main Boulevard, Sargodha Rd, Block F FDA City, Faisalabad
- Lahore branch: 2nd Floor, Jeff Heights, Gulberg, Lahore
- Hours: 9:00 AM to 6:00 PM, daily
We serve homes throughout Punjab. Site surveys are normally free, or contact us with your bills and your list of night loads.
Frequently asked questions
Can a solar system run my whole house?
Yes during the day, if the panels and inverter are sized for your daytime load. Running the whole house at night as well needs a battery large enough for your night loads, and covering winter without the grid needs considerably more.
What size solar system runs a whole house in Pakistan?
It depends on your consumption and when it happens, not just the house size. Many larger homes with several ACs need around 10 kW or more of panels for daytime coverage, plus a battery sized to the night loads you choose. A site survey and your bills give the real answer.
Can I run 3 ACs on solar at night?
Technically yes, with a big enough battery and inverter, but it is expensive. Three ACs for eight hours can need well over 20 kWh of battery on their own. Most homes run one bedroom AC on battery and use the grid for the rest.
Will my whole house work on solar during load-shedding?
Only with a hybrid or off-grid inverter and a battery, and only for loads within the inverter's rating and the battery's energy. On-grid inverters shut off during load-shedding.
Can I disconnect from the grid completely?
You can, but in Punjab it rarely makes sense for a city home. Winter and foggy spells need a much larger battery and panel array or a generator. Keeping the grid as backup usually costs far less.
Is it better to back up the whole house or only essential loads?
For most homes, backing up chosen loads is better value. A smaller battery covers lights, fans, the fridge, the router and perhaps one AC, while heavy loads wait for the sun or the grid.
Do I need three-phase for a whole-house solar system?
Large houses with several ACs often benefit from three-phase, because the load is spread and bigger inverters are available. It is not always required; it depends on your load and your existing connection.