Solar for Server Rooms, IT Offices and Software Houses

This guide covers software houses, IT and BPO offices, call centres and small server or network rooms in Punjab. For ordinary daytime offices and bank branches, start with our guide to solar for offices and banks. This page focuses on what is different: round-the-clock load and zero-break power.

How an IT office uses power

The difference from an ordinary office is the night. A day-only office uses almost nothing after dark. A software house serving clients in Europe or North America, or a call centre on a night shift, may use as much at 2 AM as at noon. That changes the sizing completely.

Diagram

Server rooms and IT offices

Servers

24-hour load

UPS

Keeps clean power

Solar

Cuts day units

The UPS stays: how solar and the UPS work together

Most IT offices already have an online (double-conversion) UPS for servers and often for workstations. Solar does not replace it. Our guide on UPS vs solar explains the general difference; for IT, the rule is simple.

1. The online UPS feeds the critical loads, as it does today. It gives a clean, unbroken output whatever happens upstream.
2. The hybrid solar system feeds the UPS input, along with other backed-up circuits. In daytime, solar supplies most of the energy. At night or in load-shedding, the battery takes over.
3. The UPS battery becomes a short bridge, covering only the moments of any transfer, rather than carrying the whole outage.
4. The generator, if you have one, sits behind both for long outages, connected with a proper controller. See our solar and generator hybrid guide.

This layered design means a hybrid inverter's transfer time no longer matters for the servers, because the UPS covers the gap. It still matters for unprotected loads such as lights and ACs. Our hybrid inverter transfer time guide explains this.

Two technical points we check during design:

• UPS input window. Some UPS units are strict about input voltage and frequency, and may go to their own battery when fed from an inverter or generator. We check the UPS's accepted input range against the hybrid inverter's output.
• Earthing. IT equipment needs a sound earth. We design solar earthing and surge protection to work with the building's existing earth. See solar earthing and surge protection.

Cooling: the load that decides the design

In a Punjab summer, server room cooling is often the largest single 24-hour load. It also peaks in the afternoon, which suits solar.

• Use inverter ACs where possible; they start softly and use less power at part load. See inverter AC vs non-inverter AC on solar.
• Keep a second AC on the backup supply, so one failure does not overheat the room.
• Reduce the heat first. Blanking panels, sealed cable entries, and keeping the room closed often lower the cooling load before any solar is added.
• Do not put the inverter or battery in the server room. They need their own ventilated space with service access. See where to install your inverter and battery.

Sizing for night shifts and 24-hour loads

A good design separates the loads into three groups, often with a separate distribution board for the backed-up circuits (see our guide to a backup loads panel):

1. Critical (always on): servers, network, server room cooling, security.
2. Shift loads: workstations, office ACs and lights for the shift in progress.
3. Grid-only: loads that can wait for the grid, such as lifts and water heaters.

Then size each part:

• Solar to the daytime load, including enough surplus to charge the battery before evening. Under net billing, exported units earn much less than they save when used on site. See sizing under net billing and the net metering and net billing guide.
• Battery to the backup hours you actually need, not to the full night by default. Our guide on how many batteries for full night backup shows the method.
• Inverter to the highest load the backed-up circuits can draw at once, including AC start-up.

Example arithmetic only

These are round illustrative numbers, not a design.

For example, if the critical load (servers, network and server room cooling) averages 4 kW around the clock, it uses about 4 × 24 = 96 units a day. Over a 12-hour night, that is about 48 kWh. If you only want the battery to cover the longest likely load-shedding block, say 3 hours, you need about 4 × 3 = 12 kWh usable, plus margin, and the grid or generator carries the rest of the night. Add a night shift of workstations and ACs, and the numbers grow quickly. This is why most 24-hour IT sites use a battery for outages and the grid or generator for the rest of the night, rather than trying to run the whole night on stored solar.

Large sites with heavy night loads, or that want to shift energy into peak-rate hours, should read battery storage (BESS) for factories, which explains when larger storage pays.

Equipment we use

Hybrid inverters and batteries are chosen per site from the brands we supply. For 24-hour commercial loads, we often look at Luminey and current Huawei and Sungrow options battery systems with a matched inverter. See our Huawei, Sungrow and Luminey pages. The exact model, quantity and manufacturer's warranty per product are.

Monitoring matters for IT teams, who like to see power data alongside their other systems. Current systems we design include remote monitoring, subject to equipment capability; see our solar monitoring app guide.

Rented floors and shared buildings

Most software houses and call centres rent floors in plazas or converted houses. Before design:

• Get written permission from the owner for the roof, fixings and cable route.
• Check which meter the solar will feed; it can only supply the connection it is installed behind.
• Agree what happens to the system if you move. Our guide on solar for rented premises covers the options.

Solar price for IT offices and server rooms

Our projects start at about 6 kW.

How Solar Works Pakistan works with IT offices

Solar Works Pakistan is a Faisalabad-headquartered solar EPC, engineering and trading company, founded in 2021, with a branch in Lahore. We have served 300+ customers, including 50+ industrial clients. Hybrid systems and battery storage are core to our work. Load analysis and AutoCAD design are done in-house, our own teams install, test and commission, and we plan the cut-over around your working hours.

Our structures carry a 3-year Solar Works Pakistan structure warranty, and 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. See our industrial and commercial solar page.

Get today's price or a free site survey

Send 12 months of bills, your UPS details and your shift pattern. Our engineers will design around the loads that must never stop.

• 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

We serve all of Punjab, and site surveys are normally free. You can also contact us online.

Frequently asked questions

Can solar run a server room 24 hours a day?

Solar covers the daytime energy. At night the load comes from a battery, the grid or a generator. Most 24-hour sites use a battery for load-shedding and the grid for the rest of the night, because storing a full night of server and cooling load is large and costly.

Do I still need my online UPS if I install solar?

Yes. The online UPS gives servers a clean supply with no break. The hybrid solar system feeds the UPS, so the UPS battery only needs to bridge short transfers instead of whole outages.

Will my servers restart when the hybrid inverter switches to battery?

Not if they sit behind a working online UPS, which covers the transfer. Loads connected directly to the inverter may notice a short gap, depending on the model and wiring.

How big a battery does a call centre need?

It depends on the backed-up load and how many hours you want it to cover. Multiply the average backed-up kW by the hours of backup, then add margin. Our full night backup guide shows the method with example numbers.

Is solar worth it for a software house that works at night?

The daytime part pays in the usual way, since solar output is used on site. The night part depends on whether you size the battery for outages only or for the whole night. We usually recommend batteries for outages and the grid for the rest.

Can solar be installed in a rented office floor?

Yes, with the owner's written permission for the roof and cable route, and an agreement on what happens if you move.

Sources

1. Net billing facts are carried over from our net metering and net billing guide, which lists its own 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