Solar Division · Multan Workshop
PakMEC engineers install on-grid, hybrid and off-grid solar systems across Multan and nearby towns, keep them producing with measured maintenance visits, and build automatic solar panel cleaning systems — dry-brush robots and filtered sprinkler rigs — in our Multan workshop. One local team, never more than a short drive from your roof.
What We Do
Most solar owners in Multan juggle an installer, a cleaning crew and an inverter technician — and when output drops, each blames the other. PakMEC handles all three with one set of drawings, test records and responsibility.
InstallationResidential, commercial and agricultural systems designed around your bill, roof and DISCO — not a one-size package.
MaintenanceMeasured O&M visits that find the fault before your electricity bill does.
CleaningSoft-brush washing of your solar plates with tested water — or hand the job to an automated system.
Dust Loss Data
Most cleaning companies quote a vague “up to 30%”. Here are measured Pakistani figures, and an estimator that turns them into rupees for your own system.
Soiling rate measured on a 30°-tilted module over 120 days on a Lahore rooftop.
Ullah et al., Renewable Energy, 2020Energy lost by an uncleaned horizontal panel over 100 days in Lahore, compared with a clean panel.
Ullah et al., Renewable Energy, 2019Optimum manual cleaning interval for 30°-tilted panels in the Lahore study — every three weeks for vertical panels.
Ullah et al., Renewable Energy, 2020Highest groundwater pH across 68 samples in Khanewal, next to Multan — above the pH 6.5–8 JinkoSolar specifies for washing modules.
Iqbal et al., Water, 2021 · JinkoSolar manualThe Lahore dust was rich in carbon (soot from air pollution) and quartz (fine sand). That mix sticks to glass, which is why the same study modelled losses of up to 10% for lightly soiled panels and up to 40% for heavily soiled ones.
Built on the measured soiling rates above and Multan's sunshine. Adjust the inputs to match your system.
A weekly automated cycle cuts average loss to 1.7% and recovers about 40 kWh (Rs 2,414) every month.
You already clean weekly or more often — an automated system mainly saves crew visits and water.
How it works: loss(t) = 25% × (1 − e−r·t / 25%), a dust curve that starts at your daily soiling rate r and levels off below the 26.2% measured after 100 days in Lahore. The heavy rate (0.8%/day) is the Lahore study value. Monthly units = kW × yield × 30; the Multan yield is an approximate annual average. An estimate, not a guarantee — rain, tilt and nearby dust sources change real losses.
Automated Cleaning
Multan has plenty of cleaning crews but few engineered automation options. Our mechatronics workshop designs, fabricates and installs cleaning systems across Multan — matched to your array layout, water supply and budget.
A self-powered carriage rides the module frames and sweeps each row with a rotating soft brush — no water, no tanker, no crew on the roof. It runs before sunrise and parks off the array.
Schematic · one row of modules, viewed from the front
A nozzle manifold along the top edge of each row rinses the glass on a timer. Ideal for flat residential roofs with an overhead water tank.
Schematic · one row of modules with its water supply, front view
A rotating soft brush on a telescopic pole, fed with filtered water. Your own staff can clean large arrays from the walkway without stepping on a single module.
Schematic · one row of modules, side view
Prefer people over machines? Our crews wash with soft brushes and tested water on a schedule set by your dust exposure, and check the electrical side on every visit.
Every visit, in the same order
Who We Build For
Different roofs, loads and dust problems need different system designs — and different cleaning strategies.
Residential3–20 kW on-grid or hybrid systems for Multan's flat RCC roofs, sized so daytime AC and pump loads run on your own units first.
Commercial & IndustrialFactories, schools, hospitals and warehouses in and around Multan, where daytime demand matches solar output — the strongest case under net billing.
AgriculturalSolar tubewells replace diesel for irrigation on farms and mango orchards around Multan, using a VFD to run the pump directly from the array.
Sizing & 2026 Prices
Start with the monthly units on your MEPCO bill, then check your roof space. The price ranges are published installed prices for on-grid systems (September 2026), including Multan installers' price lists. PakMEC's quote for your roof is itemized and fixed after the site survey.
| System size | Panels (≈585 W) | Roof space | Avg. units / month | Typical load | Installed price range (on-grid) |
|---|---|---|---|---|---|
| 3 kW | 5–6 | ≈300 sq ft | ≈390–420 | Lights, fans, fridge, water pump | PKR 3.4–5 lakh |
| 5 kW | 9 | ≈500 sq ft | ≈650–700 | Plus one 1.5-ton inverter AC in daytime | PKR 5–8.5 lakh |
| 10 kW | 17–18 | ≈1,000 sq ft | ≈1,300–1,400 | 2–3 inverter ACs, home office | PKR 8.5–14 lakh |
| 15 kW | 26 | ≈1,500 sq ft | ≈1,950–2,100 | Large home, clinic, shop | PKR 15–18 lakh |
| 20 kW | 34 | ≈2,000 sq ft | ≈2,600–2,800 | Villa, school block, small factory | PKR 19–24 lakh |
| Compare | On-grid | Hybrid | Off-grid | Solar tubewell |
|---|---|---|---|---|
| Battery | None | Lithium, typically 5–15 kWh | Lithium or tubular bank | None — a VFD runs the pump directly |
| During load-shedding | Switches off (anti-islanding safety) | Keeps chosen loads running | Always on — no grid | Pumps whenever the sun is up |
| Net billing | Yes | Yes | No | Usually no |
| Best for | Daytime-heavy homes and businesses | Homes and clinics with frequent outages | Remote homes, farms, telecom sites | Irrigation and livestock water |
| Relative cost | Lowest per kW | +30–40% | Highest (battery autonomy) | Set by pump kW and depth |
Grid rules changed in February 2026. Under NEPRA's Prosumer Regulations, new grid-tied connections — including MEPCO connections in Multan — are net-billed: exported units are credited at roughly Rs 10–11 per unit while imported units are charged at your normal tariff (Express Tribune). So we size on-grid systems for daytime self-consumption first, not export.
Solar O&M
Clean glass is only half the job. Every visit includes measured electrical checks, so you can see exactly what changed — and why. Plans are available across Multan city and nearby towns.
One-off · any system size
4 visits a year · optional monthly washes in dust season
Cleaning interval set from measured soiling
Inverter showing an error, tripping at midday or producing less than it should? We trace the cause on site — PV insulation faults, grid over-voltage, loose DC terminals, CT or meter wiring, failed fans — and fix installation-side faults directly. Board-level repairs go through the brand's authorized service centre, so your warranty stays valid.
How It Works
Seven steps, each ending with a document you can check.
WhatsApp your latest MEPCO bill (12-month history if possible), roof photos and a location pin in Multan or a nearby town. We reply with a first sizing.
Same dayOur crew visits your roof: measurements, shading between 9 am and 3 pm, structure and parapet condition, cable routes and meter details.
1–2 daysArray layout, structure review for roof load and wind uplift, single-line diagram and a yield estimate under net-billing rules.
2–3 daysBrand, model and quantity for every item — panels, inverter, structure, cables and protection. No “extra material” added later.
With the designMounting, DC/AC wiring and earthing, then commissioning tests to IEC 62446-1: polarity, string Voc/Isc and insulation resistance.
1–4 days (homes)Technical file prepared and processed with MEPCO through an AEDB-certified installer, as NEPRA rules require, followed by MEPCO's site inspection and meter change.
MEPCO timelineApp monitoring set up, a cleaning interval chosen for your dust exposure, and an optional O&M plan.
OngoingService Area
Installation, maintenance and cleaning all need our own crew, tools and equipment on your roof. So for now we work on-site only in Multan city and towns within about 50 km — close enough to come back quickly whenever your system needs us.
Outside this area? We're not taking on-site jobs beyond Multan and nearby towns for now. Every installation, maintenance visit and cleaning job needs our own crew and equipment, and we'd rather do fewer jobs properly than stretch our crews across Punjab.
| Season | What builds up on your panels | Suggested cleaning interval |
|---|---|---|
| April–June | Fine desert dust, dust storms and wheat-harvest chaff; afternoons above 45 °C | Every 1–2 weeks, plus after every dust storm |
| July–September | Monsoon showers rinse the glass, but light rain leaves mud spots; bird droppings | Every 2–3 weeks; spot-clean after light rain |
| October–November | Smoke and soot from crop-residue burning; cotton lint during picking | Every 2 weeks |
| December–March | Fog and smog film; the lower winter sun makes every lost percent count | Every 2–3 weeks |
Why PakMEC
The difference shows up in year three, not on installation day.
| What gets checked | Typical installer | PakMEC |
|---|---|---|
| Structure | Angle-iron frame sized by eye; roof load and wind uplift unchecked | Layout reviewed by a PEC-registered civil engineer for roof load and wind uplift |
| System sizing | Oversized for export on old net-metering assumptions | Sized for daytime self-consumption under 2026 net-billing rules |
| Quotation | Lump-sum price; “extra material” added on site | Itemized brand, model and quantity — fixed after survey |
| Handover | “System is on” — no test records | IEC 62446-1 test sheet, as-built diagram and serial list |
| Cleaning | Bore water, stiff brooms, midday washing on hot glass | Tested water (pH 6.5–8), soft brushes, early or late in the day |
| Maintenance | Separate cleaner, separate inverter technician | One team and one set of records for install, O&M and cleaning |
| Automation | Not offered | Dry-brush robots and sprinkler systems built in Multan |
| After-sales visits | Installer based in another city — revisits wait for their next trip | Multan-based crew — your site is a short drive from our workshop |
FAQs
Straight answers with numbers. Still unsure? Send your bill on WhatsApp and an engineer will size it with you.
Ask an EngineerPublished installed prices for on-grid systems in September 2026, including Multan installers' price lists, run from about PKR 3.4–5 lakh for 3 kW, PKR 5–8.5 lakh for 5 kW and PKR 8.5–14 lakh for 10 kW. Hybrid systems with lithium storage usually add 30–40%. Panel and inverter brand, structure height and cable runs move the price, so PakMEC gives an itemized, fixed quote after surveying your roof.
Divide the average monthly units on your MEPCO bill by about 135 (30 days × 4.5 kWh per kW per day) to get the kW you need. A home using 700 units a month typically needs a 5 kW system; 1,400 units needs about 10 kW. Under net billing it pays to cover daytime use first, because exported units earn far less than you pay for imported ones.
On-grid is the cheapest per kW but switches off during load-shedding for safety. Hybrid adds lithium storage so chosen loads keep running through MEPCO outages, at roughly 30–40% more cost. Off-grid suits sites with no grid connection. For farms and orchards, a solar tubewell with a VFD runs the pump directly without batteries.
A Lahore rooftop study found weekly cleaning optimal for 30°-tilted panels, which lost about 0.8% of their output per day to dust. In Multan that means every 1–2 weeks from April to June, when dust storms and harvest dust peak, and every 2–3 weeks for most of the year. Always clean after a dust storm — early in the morning, never on hot glass.
Rates published by Pakistani cleaning companies in 2026 range from roughly Rs 180 to Rs 600 per kW per visit, depending on system size, roof access and water supply; larger arrays cost less per kW. For frequent cleaning of large arrays, compare the one-time cost of an automated system against repeat crew visits — we quote both options side by side.
Yes. In Lahore, an uncleaned horizontal panel lost 26.2% of its energy over 100 days compared with a clean one, and researchers estimated losses of up to 10% for lightly soiled panels and up to 40% for heavily soiled panels. The dust was rich in carbon from air pollution and quartz from sand, so it sticks to the glass and needs proper washing.
It cleans panels on a schedule without a crew. PakMEC builds two main types: a rail-guided dry-brush robot that uses no water, best for long rows, ground-mounts and tubewell arrays, and a timed sprinkler wash with filtration for rooftop homes. It pays off where dust is heavy, arrays are large or roof access is difficult; small, easy-to-reach home systems are often fine with scheduled crew cleaning.
Only if the water is suitable. JinkoSolar's installation manual calls for neutral water (pH 6.5–8) and warns that mineral-rich water leaves deposits on the glass. Groundwater samples from Khanewal, next to Multan, measured up to pH 9.2, so we test water first and filter or soften it where needed. Never use detergents, abrasive pads or high-pressure jets (keep hose pressure below 675 kPa), and wash only in the early morning or late afternoon.
Yes. We prepare the technical file — single-line diagram, equipment datasheets and protection details — and process the application with MEPCO through an AEDB-certified installer, as NEPRA rules require. Since February 2026 new connections fall under NEPRA's Prosumer Regulations (net billing), so buy-back rates differ from the old net-metering scheme; we show you the numbers before you commit.
Yes, on site anywhere in Multan and nearby towns. We diagnose isolation (Riso) faults, grid over-voltage trips, PV over-voltage, over-temperature and communication errors — and fix installation-side causes such as damp DC junctions, loose terminals or undersized cables. Board-level repairs go through the brand's authorized service centre so your warranty stays valid.
Multan city and nearby towns within about 50 km — including Multan Cantt, DHA Multan, Bosan Road, Gulgasht, Qadirpur Raan, Makhdoom Rasheed, Muzaffargarh, Shujabad and Khanewal. Installation, maintenance, cleaning and automated-system installs all need our own crew and equipment on your roof, so for now we don't take on-site work outside this area.
Reviewed by PakMEC's engineering team · Last updated
Survey slots open: Multan & nearby towns
Share your electricity bill and roof photos on WhatsApp. A PakMEC engineer replies with a first system size and the right cleaning approach for your roof, then books a site survey anywhere in Multan and nearby towns.
Pick a service and add two details — we'll open WhatsApp with your message ready to send. On-site service covers Multan city and nearby towns.
