Solar for Warehouses and Logistics Centres

This guide is for owners and managers of dry warehouses, distribution centres, cold rooms and logistics yards in Punjab. For refrigeration-heavy plants, see solar for cold storage and ice factories.

The warehouse mismatch: big roof, small load

A typical dry warehouse uses power for:

• Lighting, often high-bay fittings over racking.
• Fans and ventilation, or air conditioning in offices and sensitive stores.
• Forklift and pallet-truck charging.
• Dock doors, conveyors and wrapping machines.
• Offices, IT, CCTV and security lighting.

None of these is large compared with the roof area. A factory of the same size might run looms or compressors under the roof; a warehouse often runs mainly lights and fans. That creates the central design question.

Why "fill the roof" is the wrong starting point

Under the net billing rules in force since 9 February 2026:

• units you use yourself save your full tariff;
• units you export are credited at a much lower rate, linked to the national average energy purchase price;
• your solar capacity cannot exceed your sanctioned load.

So a warehouse with a small connection cannot legally connect a roof-filling plant anyway, and a plant that mostly exports earns far less per kW than one sized to self-use. Our guide to sizing under net billing shows the arithmetic in full. The rules themselves are in our net metering and net billing guide.

Diagram

Warehouses on solar

Large roofs

Space for many panels

Light load

Lights, fans, docks

Surplus

Exported under net billing

How to size a warehouse plant

1. Read 12 months of bills. Note units, sanctioned load and, if billed, MDI.
2. Split the day from the night. Security lighting and cold rooms run at night; most handling runs in the day.
3. Count working days. A warehouse that runs seven days a week uses its solar much better than one closed on Sundays.
4. Size to daytime use first. Example arithmetic only, with round numbers: if a warehouse uses about 200 units between 9 AM and 4 PM on a working day, and a well-installed system in Punjab gives very roughly 4 units per kW per day, about 50 kW would cover most of that daytime use.
5. Then test going bigger. Each extra kW above that level mostly exports. Work out its value at the export rate before adding it.
6. Check the limits: sanctioned load, transformer capacity and connection type. If the right size is above your sanctioned load, increase your sanctioned load first.

If export is not available or not wanted, a self-use plant with export limited is an option; see the zero export device guide.

Large sheet roofs: what to check

Most warehouses in Punjab are steel portal-frame sheds with metal or cement sheet roofs. They can carry solar well, but the details matter.

• Fix into purlins, not just the sheet, and seal every penetration on the crest. Our guide to solar on tin and metal sheet roofs covers fixing methods and leak prevention.
• Check the frame's spare capacity. A shed designed for light roofing may have little margin. Our guide to roof load and structural checks explains what an engineer looks at.
• Skylights and translucent sheets cannot carry panels and need to be mapped and kept clear for daylight.
• Old or fragile sheets may need replacing first, or an independent elevated structure.
• Wind on long, open roofs. Edge and corner zones see higher wind uplift; layout and fixing should allow for it.

Our structures are designed in-house and carry a 3-year Solar Works Pakistan structure warranty.

Cold rooms inside warehouses

Many logistics centres have a chilled or frozen section for food, medicines or produce. Cold rooms change the picture:

• They are the best solar load in the building. Compressors work hardest on hot afternoons, when solar is strongest.
• They run at night too, so the grid, a generator or a battery still covers evenings.
• They raise the case for backup. A long outage can spoil stock. A hybrid design with a battery (BESS) and an integrated generator can protect the cold section. Our guide BESS for factories explains how to judge whether a battery pays.

If the cold section is a large share of your load, the sizing logic of a cold store applies; see solar for cold storage and ice factories.

Using the spare roof sensibly

If your roof can hold far more than you need, there are honest options:

• Plan for growth. Leave space, cable routes and inverter room for a second phase when you add cold rooms, more shifts or EV charging for delivery vehicles.
• Electrify loads that run in daylight, such as forklift charging during the day instead of overnight.
• Raise your sanctioned load if your real demand has grown, so a larger plant becomes allowed.
• Leave it empty. An unused roof costs nothing. A plant that mostly exports at a low rate may not be the best use of capital.

Safety and operations

• Fire safety. Warehouses hold stock, often packaging and combustibles. DC cabling, isolators and inverter locations need care, and firefighters must be able to isolate the system. See fire safety for rooftop solar and lithium batteries.
• Access and cleaning. Wide roofs need walkways and safe access points. Plan cleaning so water and crews stay off fragile sheets. See solar panel cleaning.
• Racking and lighting. Inverters and DC routes should not sit above high racking where they are hard to reach.

Warehouse solar price

How Solar Works Pakistan delivers warehouse projects

Solar Works Pakistan is a solar EPC, engineering and trading company founded in 2021, headquartered in Faisalabad with a branch in Lahore. We have served 300+ customers, including 50+ industrial clients, and build projects from about 6 kW to megawatt scale.

• In-house load analysis, AutoCAD layout and structural design.
• Own teams for fabrication, installation, testing and safe commissioning.
• A detailed BOQ with brand, model, quantity and warranty per item. Use our guide to comparing solar quotations to check it.
• Panels, inverters and batteries carry the manufacturer's warranty per product. Our service warranty covers the first year under applicable project terms.
• After a complaint is registered, we target sending service personnel within 48 hours to begin diagnosis.

Larger projects follow a project-specific schedule. See our industrial and commercial solar page.

Get today's price or a free site survey

Send 12 months of bills, your sanctioned load, working days, any cold-room details and photos of the roof from above and inside the shed.

• WhatsApp or call: 0336 666 4321
• Email: info@solarworks.pk
• Head office: Main Boulevard, Sargodha Rd, Block F FDA City, Faisalabad (Faisalabad page)
• Lahore branch: 2nd Floor, Jeff Heights, Gulberg, Lahore (Lahore page)
• Hours: 9:00 AM to 6:00 PM, daily
• Service area: all of Punjab. You can also contact us online.

Site surveys are normally free.

Frequently asked questions

Should I cover my whole warehouse roof with solar?

Usually not. Under net billing, units you export earn much less than units you use, and your plant cannot exceed your sanctioned load. Size to your daytime use first, then test whether extra panels are worth their lower value.

Can a warehouse sheet roof carry solar panels?

Most can, if the panels are fixed into the purlins and the frame has spare capacity. Old or fragile sheets may need replacing or an elevated structure. An engineer checks the shed from inside and out during the survey.

Is solar worth it for a warehouse with a small electricity bill?

It can be, if the plant is small and matched to daytime use. A plant that is large compared with the bill will mostly export, which pays back more slowly.

Do cold rooms change the solar design?

Yes. Cold rooms are a strong daytime solar load but also run at night, and stock is at risk in long outages. A hybrid design with a battery and generator integration is often worth considering.

Can I sell my extra solar to a neighbouring business?

Not normally. A solar system supplies the connection it is installed behind, and moving power between separate meters is not normally allowed. Check the current rules with your DISCO.

Will solar panels make my warehouse cooler?

Panels shade the roof, which can reduce heat reaching the space below. The effect depends on the building, so we do not quote a figure.

Sources

Net billing facts are reused from our net metering and net billing guide, which lists its sources, including the NEPRA (Prosumer) Regulations, 2026, SRO 251(I)/2026: https://ke.com.pk/wp-content/uploads/2026/04/8.-NEPRA-Prosumer-Regulations-SRO-251I2026-09-02-26.pdf