How to Choose a Solar Installer in Pakistan: Checklist

A solar system is a long-term purchase. The panels will sit on your roof for years, and the quality of the installation matters as much as the quality of the panels. A good installer sizes the system correctly, uses safe wiring and mounting, and stays reachable after the work is done. A poor installer can leave you with low generation, roof leaks, or a system nobody will service. Use this checklist before you pay anyone.

Step 1: Know Your Load Before You Talk to Installers

Before you accept any quote, work out what you actually need to run. List your main appliances, their watts, and how many hours you use them each day. This stops an installer from selling you a system that is far bigger, or far smaller, than your home needs.

Use our Solar Load Calculator to turn that appliance list into a system size in kW. When every installer quotes for the same size, their prices become directly comparable. If one installer recommends a very different size from the others without explaining why, ask for that explanation in writing.

Step 2: Get at Least Three Written Quotes

Never accept a verbal price. Ask at least three installers for a written quote, and make sure each quote lists the same details:

• System size in kW and number of panels
• Panel brand and model, and wattage per panel
• Inverter brand, model, and type (on-grid, hybrid, or off-grid)
• Battery brand and capacity, if batteries are included
• Mounting structure type and roof work included
• Wiring, breakers, and safety protection included
• Labour and installation charges
• Net metering or net billing application charges, if any
• Total price, payment schedule, and what is excluded

A quote that only says 5kW solar system with one total price is not enough to compare. Two quotes for the same size can differ greatly because one uses a better inverter, proper structure, and full safety equipment, while the other does not.

Use our Solar Price Estimator as a rough sense-check only. It does not replace a written quote, and final prices depend on your roof, wiring distance, and the exact brands quoted.

Step 3: Check Experience and Past Work

Ask each installer:

• How long have you been installing solar systems?
• Can you show photos of recent installations nearby?
• Do you install the system with your own team, or do you subcontract the work?
• Who do I call if generation drops or an inverter shows an error after installation?

An installer with local, recent work is easier to check than one with only social media posts. If possible, speak to one past customer about whether the work finished on time and whether after-sales support was helpful. Be polite and brief, and do not ask for private details.

Step 4: Verify Panels and Inverter Before Installation Day

Fake or mismatched equipment is one of the most common solar complaints. Protect yourself with these steps:

• Ask for the exact panel and inverter model numbers in the written quote, not just brand names.
• On delivery day, check that the model numbers on the boxes and on the equipment match the quote.
• Ask for the warranty cards or manufacturer documents for panels and inverter, and keep copies.
• Check the inverter display or app after installation to confirm it reports generation. If it shows nothing, do not sign the completion note until it is fixed.

Do not accept a last-minute brand swap on installation day without a price adjustment in writing and a clear reason. If the replacement brand is genuinely equal, the installer should be able to explain why in plain terms.

Step 5: Ask About Warranties in Writing

There are usually two different warranties, and they are not the same thing:

• Product warranty: covers defects in the panel or inverter itself.
• Installation or workmanship warranty: covers the mounting, wiring, and installation work.

Ask how long each warranty lasts, what it covers, what it excludes, and who handles a claim — the installer or the manufacturer. Get this in writing. A verbal promise of full warranty is not enough, because it does not say who pays for labour, transport, or replacement parts. Keep all warranty papers with your quote and payment receipts in one file.

Step 6: Compare On-Grid, Hybrid, and Battery Options Honestly

Not every home needs batteries. An on-grid system is usually simpler and cheaper, but it does not give backup during load shedding. A hybrid system with batteries gives backup, but batteries add major cost and need replacement over time. Do not let an installer decide this for you without explaining the trade-off for your load-shedding situation.

Read our Hybrid vs On-Grid Solar Comparison before you choose. Then ask each installer to quote both options separately if you are unsure, so you can see the real price difference instead of guessing.

Step 7: Agree the Payment Schedule Before Work Starts

A fair payment schedule protects both sides. As a general rule, do not pay the full amount before the work is complete and tested. A common pattern is a booking advance, a payment on equipment delivery, and the balance after installation, testing, and handover — but the exact split should be written in your agreement.

Before you pay the final balance, check:

• The system is installed, wired, and switched on.
• The inverter shows generation.
• You have received warranty papers, the user manual, and a basic explanation of the inverter display.
• Any roof holes or cable entries are sealed and tidy.
• You know who to call for support and what the support process is.

Red Flags: Walk Away If You See These

• Pressure to pay in full today for a today only discount.
• No written quote, no company address, and no reachable phone number.
• A quote far below all others with no explanation of cheaper brands or missing items.
• Refusal to name panel and inverter models in writing.
• No mention of safety breakers, earthing, or proper structure for your roof type.
• A promise that your bill will become zero, or a fixed monthly saving figure, without showing the calculation for your load and roof. No installer can guarantee a bill figure, because generation depends on weather, shading, and usage.

Final Checklist Before You Sign

• Load calculated and system size agreed in kW
• Three written quotes compared item by item
• Panel and inverter brand and model in writing
• Product warranty and installation warranty in writing
• Payment schedule agreed, balance due only after testing
• After-sales contact name and process confirmed
• Roof, wiring, and safety items included in the quote

Take one extra day to compare quotes if you are unsure. A solar system lasts for years; one careful day of checking is worth it.

Frequently asked questions

How many quotes should I get before choosing a solar installer in Pakistan?

Get at least three written quotes for the same system size in kW. Written quotes let you compare panel brand and model, inverter type, structure, wiring, safety equipment, and payment terms item by item, instead of comparing only the total price.

What should a written solar installation quote include?

A complete quote should list the system size, number of panels, panel brand and model, inverter brand and model, battery details if included, mounting structure, wiring and safety protection, labour charges, net metering or net billing charges if any, total price, payment schedule, and exclusions.

How do I check if solar panels and an inverter are genuine?

Ask for exact model numbers in the written quote, then check on delivery day that the model numbers on the boxes and equipment match the quote. Ask for warranty cards or manufacturer documents, keep copies, and confirm after installation that the inverter display or app reports generation.

What warranties should I ask a solar installer about?

Ask separately about the product warranty, which covers defects in panels or inverters, and the installation warranty, which covers mounting, wiring, and workmanship. Get both in writing, including what each covers, what it excludes, and who handles a claim.

Should I pay the full amount before solar installation is complete?

No. Agree a written payment schedule before work starts, and keep the final balance until the system is installed, tested, and handed over, with warranty papers and a basic explanation of the inverter display provided.