Guides · Faisalabad, Lahore, Punjab
Solar for Telecom Towers and Remote Equipment Sites
Short answer
Solar for telecom towers works best as a hybrid: solar panels feed the site's 48 V DC system by day, a battery carries the night, and the generator runs only when the battery is low. The main goal is fewer generator hours and less diesel, not removing the grid or the generator altogether. Because a tower site draws power 24 hours a day, the battery and the control logic matter as much as the panels.
This guide explains how a telecom or remote equipment site is powered, where solar fits, and what to check before a retrofit in Punjab.
Why tower sites are moving to solar
A mobile tower site cannot switch off. Its radios, transmission links and cooling run day and night, whatever the grid is doing. In much of Pakistan that has meant long generator hours during outages, and some remote sites run on generators as their main supply.
The scale is large. An AEDB figure quoted in 2023 put the telecom sector's diesel use at about 1.2 billion litres a year, which would make it one of the country's biggest diesel users. Operators and tower companies have responded with solar hybrid programmes. One tower company reported more than 200 solarised towers by 2022, and in April 2026 a major operator and Huawei reported solar systems at 1,000 base stations with a combined 13 MW, about 13 kW per site on average.
The technology is proven. The engineering question for each site is how much solar, how much battery, and how the three sources hand over to each other.
Telecom and remote sites
Load
Small, round the clock
Design
Solar plus battery, sized for night
How a tower site is powered
| Part | What it does | Notes |
|---|---|---|
| Grid connection | Main supply where available | Often interrupted by load-shedding and faults |
| Diesel generator | Backup, or main supply at off-grid sites | Fuel, servicing and theft are the big running costs |
| Rectifiers | Convert AC to 48 V DC for the equipment | Most telecom equipment runs on DC |
| Battery bank | Carries the site through gaps | Often lead-acid on older sites; lithium on newer ones |
| Cooling | Shelter AC or cabinet fans and heat exchangers | Can be the largest load in a Punjab summer |
| Site controller | Manages sources, alarms and remote reporting | Decides when the generator starts and stops |
The key point is that most of the load is DC. Solar panels also produce DC, so solar can be connected in two ways:
- DC-coupled. Solar charge controllers (MPPT modules) feed the 48 V DC bus directly, alongside the rectifiers. This avoids converting DC to AC and back, so less energy is lost. See our MPPT charge controller guide for how MPPT works.
- AC-coupled. A hybrid or off-grid inverter produces AC for the whole site, and the existing rectifiers convert it to DC. This suits sites with large AC loads such as shelter air conditioners, or where the existing power system cannot accept solar modules.
Which is right depends on the site's power system, its cooling and the space available. A site survey answers this.
Sizing: a 24-hour load needs a battery
A tower's load is close to flat across the day and night. Solar only produces in daylight, so every unit used at night must come from the battery, the grid or the generator.
Example arithmetic only, with round illustrative numbers. Suppose a site draws a steady 2 kW.
- Daily energy: 2 kW x 24 hours = 48 kWh.
- If solar is meant to cover the whole day on its own, it must supply the 2 kW load in daylight and charge the battery with enough for the night, roughly 28 kWh for 14 dark hours plus charging losses.
- Punjab's winter fog and short days cut output for weeks at a time, so a design that covers 100% in June may cover much less in January. See solar panels in Punjab heat for the summer side of the same problem.
This is why most designs aim to cut generator hours sharply rather than remove the generator. The generator stays as the last resort for long cloudy spells and faults. Measured load data from the site controller, not a nameplate, should drive the numbers.
Reducing generator hours
On a grid-poor or off-grid site, the biggest saving usually comes from changing how the generator runs, with solar and battery making that possible.
- Cyclic charging. Instead of running all night at light load, the generator starts when the battery reaches a set low point, runs at an efficient load to recharge it, then stops.
- Solar first. In daylight, solar carries the load and recharges the battery, so the generator often does not start at all on a sunny day.
- No reverse power. The controller must stop solar from pushing power into the generator. This is the same rule we explain in our solar and generator hybrid guide.
How to estimate it for your site: take the last three to six months of generator run-hours and fuel records, split them by month, and compare with the solar and battery design's expected coverage in each month. This gives an estimate, not a guarantee; fog, faults and load growth change the result.
Choosing the battery
The battery does the hardest job on a tower site: it cycles every night and must survive heat.
- Lithium (LiFePO4) handles daily deep cycling better than lead-acid and is lighter. See LiFePO4 vs tubular battery.
- Temperature matters. Batteries in a hot shelter or cabinet age faster. Cooling and ventilation are part of the battery design, not an extra.
- Check the BMS and protocol. The battery's management system must talk to the site controller or inverter so charging stays within limits. See battery BMS explained.
- Size in kWh and in power. Night energy sets the kWh; the generator's charging current and the load set the power rating. Our kW vs kWh and C-rate guide explains the difference.
We work with Luminey and current Huawei and Sungrow options for battery and BESS solutions, and select the product to match the site's voltage and controller. The same storage principles apply at larger scale in our BESS for factories guide.
Space, structure and security
Tower compounds are small, and remote sites are exposed.
- Where the panels go. Options include a ground-mounted array inside or beside the compound, an elevated structure over the shelter or equipment area, or the building roof at rooftop sites. See L2, L3 and elevated structures.
- Shade from the tower itself. The mast, antennas and cable ladders cast moving shadows. Panel layout and stringing must account for them.
- Theft. Panels, batteries and cables at unmanned sites are targets. Anti-theft fasteners, locked battery cabinets, fencing and alarms on the site controller all help. See solar panel theft protection.
- Lightning and earthing. Towers attract lightning. The solar array, structure and DC system must be bonded to the site earthing system with proper surge protection. See storm and lightning safety and earthing and surge protection.
Remote monitoring
A remote site is only as good as the information it sends back. Solar output, battery state of charge, generator starts and alarms should all be visible remotely. Modern inverters and controllers offer their own monitoring platforms; see our solar monitoring app guide. On operator sites, the solar data often needs to reach the operator's own network management system.
Other remote equipment sites
The same thinking applies to other equipment that runs around the clock far from a reliable supply:
- wireless and microwave link sites,
- CCTV and security systems on large estates and highways,
- data and control rooms at industrial sites,
- pumping, valve and metering stations.
Many of these loads are small.
Who buys tower solar?
Tower sites are usually owned or managed by mobile operators or independent tower companies, and energy upgrades are often bought as multi-site programmes with technical approval of each design. If you manage a portfolio of sites, or are an energy contractor needing an engineering and installation partner in Punjab, the steps below still apply.
How to plan a tower solar retrofit
- Collect site data: load history from the controller, generator run-hours, fuel records, grid availability and battery condition.
- Group sites by type: grid-good, grid-poor and off-grid; indoor shelter or outdoor cabinet.
- Survey each site: space, shade from the mast, structure options, earthing and security.
- Design per group: a standard solar, battery and controller package for each type, with site-specific layouts.
- Pilot first: install on a few sites, measure generator hours for several months, then adjust the design.
- Roll out and monitor: phase the remaining sites and track each one remotely.
Telecom site solar price
| Scope | Typical content | Price |
|---|---|---|
| Solar retrofit to an existing DC power system | Panels, MPPT modules, structure, cabling, earthing | WhatsApp for today's rate |
| Solar plus lithium battery | Above plus battery bank and controller integration | WhatsApp for today's rate |
| Multi-site programme | Standard designs per site type, pilot, phased rollout | WhatsApp for today's rate |
How Solar Works Pakistan approaches remote-site solar
Solar Works Pakistan is a solar EPC, engineering and trading company founded in 2021, with power-generation heritage going back to the 1980s through our founder, Akram Ullah Khan, and an earlier generator-import business. Hybrid systems and BESS are our specialist areas.
- In-house engineering and AutoCAD design for each site type.
- Our own teams for installation, testing and safe commissioning.
- Panels, inverters and batteries carry the manufacturer's warranty per product. Structures carry our 3-year 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.
We do not sell generators, but we integrate existing sets into hybrid designs. See industrial and commercial solar for our wider EPC work.
Get today's price or a free site survey
Send your site list, load data and generator run-hours, and our engineers will suggest a design per site type.
- 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.
Frequently asked questions
Can a telecom tower run on solar alone?
Some can in good weather, but a site that must never go down usually keeps a backup source. Solar cannot produce at night or cover long foggy spells without a very large battery, so most designs combine solar, battery and a generator or grid.
Why connect solar on the DC side?
Most telecom equipment runs on 48 V DC. Feeding solar straight into the DC bus through MPPT modules avoids converting to AC and back, which wastes less energy. AC coupling suits sites with large AC loads such as shelter air conditioners.
How much diesel can solar save at a tower site?
It depends on grid availability, load, battery size and season. The honest method is to compare your recorded generator hours month by month with the design's expected solar coverage. Treat any result as an estimate, not a promise.
Which battery is best for a tower site?
Lithium iron phosphate (LiFePO4) usually handles daily deep cycling better than lead-acid, but it still needs cooling and a BMS that talks to the site controller. The right capacity comes from the night-time energy and the charging plan.
How do you stop panels and batteries being stolen?
Use anti-theft fasteners, locked battery cabinets, fencing, lighting and alarms reported through the site controller. Security should be designed in from the start at unmanned sites.
Do you install solar for single small remote sites?
Our projects normally start at about 6 kW, so small single sites are usually handled as part of a larger site or a multi-site programme. Send us your site list and we will advise.
Sources
- ProPakistani: Powering Pakistan's Mobile Towers with Alternative Energy Sources, 19 April 2023
- DatacenterDynamics: Huawei and Jazz complete deployment of solar systems across 1,000 telco base stations in Pakistan, April 2026