Frequently Asked Questions

Everything you need to know about solar systems, pricing, net metering, and installation in Pakistan answered by Mahendus Power Solution.

How much does a solar system cost in Karachi?

A residential solar system in Karachi typically costs between PKR 250,000 and PKR 1,500,000 depending on system size (3kW to 10kW+), panel and inverter brand, and whether you choose an on-grid or hybrid (battery-backed) setup. Commercial and industrial systems are priced per project after a site survey. Use our free Solar Savings Calculator on this site for an instant estimate based on your monthly electricity bill.

Net metering allows you to send excess solar electricity back to the national grid and receive credit on your bill, effectively using the grid as a backup battery. It’s regulated by NEPRA and requires an application through your local distribution company (like K-Electric), along with technical documentation and an approved bi-directional meter. Mahendus Power Solution handles the entire net metering application and paperwork for our customers.

An on-grid system is connected to the utility grid and uses net metering, but has no power during a grid outage. An off-grid system runs entirely on batteries and solar, with no grid connection at all. A hybrid system combines both, solar plus net metering, with a battery for backup during loadshedding. Most homes in Pakistan choose hybrid systems because of frequent power outages.

This depends on your daily electricity consumption. As a general guide: small households typically need 3-5kW, mid-size homes need 5-8kW, and larger homes with air conditioning need 8-15kW or more. Use our free Solar System Size Estimator tool for a personalized recommendation based on your actual appliances.

Quality monocrystalline panels typically carry a 25-year performance warranty and can keep producing usable power for 30+ years, degrading only about 0.5-0.6% per year. Inverters usually last 8-12 years, and batteries (in hybrid systems) typically last 5-10 years, making them the first component likely to need replacement.
Most homes and businesses see a 70-90% reduction in their electricity bill after installing a correctly sized system with net metering. The exact percentage depends on system size and how much of your usage happens during daylight hours. Try our Solar Savings Calculator for an estimate based on your specific bill.

A standard on-grid system will not provide power during a grid outage, this is a safety requirement so solar doesn’t feed electricity into lines utility workers may be repairing. To get power during loadshedding, you need a hybrid system with a battery, which stores solar energy and automatically supplies your essential appliances when the grid goes down.

Popular, reliable inverter brands include Growatt, Solis, Sofar, Fronius, and Fox ESS. For batteries, lithium-ion (LiFePO4) is generally preferred over older lead-acid or gel batteries for its longer lifespan and better heat tolerance. The right choice depends on your budget and backup needs, our team recommends the best fit during your free consultation.

Installation itself usually takes 1-3 days for a typical residential system once materials are on site. The full process, from site survey to net metering approval and commissioning, generally takes 2-6 weeks, depending on system complexity and how quickly the distribution company processes the net metering application.

Yes, but requirements are minimal. Panels should be cleaned every 4-6 weeks (more often in dusty or coastal areas), and the system should get an annual professional inspection of wiring, inverter performance, and mounting integrity. Mahendus Power Solution offers ongoing maintenance and monitoring packages for this.

NEPRA regulates net metering approvals, while AEDB sets standards for solar installers and equipment. Your installer submits an application with technical drawings to your distribution company, who inspects the site and installs an approved net meter after approval. Using an AEDB-recognized installer ensures your paperwork and equipment meet all regulatory requirements.

Yes, output drops to roughly 10-25% of clear-sky production on cloudy days, but panels still generate electricity. Karachi has relatively few fully overcast days compared to other regions, so annual generation estimates already account for typical seasonal cloud cover.

Commercial and industrial projects are typically much larger (often 20kW to several megawatts), require three-phase inverters, more detailed load studies, and often ground-mount or large rooftop/carport structures instead of simple pitched-roof mounting. Mahendus Power Solution provides full engineering, procurement, and construction (EPC) services for these projects.

Panels typically carry a 10-12 year product warranty and a 25-year performance warranty. Inverters usually come with a 5-10 year manufacturer warranty. Mahendus Power Solution also provides workmanship warranty coverage on every project in addition to manufacturer warranties on all components.

Yes, several banks offer solar financing with installment plans, and some solar companies offer in-house installment options for qualifying customers. Terms and rates vary and change periodically, ask our sales team for currently available options when requesting your quote.

Yes, coastal humidity and dust can reduce panel efficiency by 5-15% if left uncleaned, and salty coastal air can accelerate wear on mounting hardware without corrosion-resistant materials. We use marine-grade mounting structures where appropriate and recommend a regular cleaning schedule as part of our maintenance packages.

A site survey confirms your roof’s structural capacity, available space, shading from nearby buildings, roof orientation, and your actual electrical load, all of which directly affect system design and expected output. Skipping this step often leads to undersized systems or unexpected structural issues, which is why we offer a free site survey with every quote.

In most cases, yes, but the roof’s structural condition needs to be verified first, and a smaller roof may limit your maximum system size. Our engineers assess roof strength, available area, and shading during the free site survey, and can recommend higher-efficiency panels where space is limited.

We provide end-to-end solar services: site surveys and energy assessments, custom system design and engineering, panel and inverter/battery installation (on-grid, off-grid, and hybrid), net metering application and government paperwork, ongoing maintenance and monitoring, and supply of panels, inverters, batteries, and accessories, for residential, commercial, and industrial customers across Pakistan.

Use the Solar Savings Calculator or Solar System Size Estimator on this website for an instant estimate, then submit the contact form, call 0300-9261317, or message us directly on WhatsApp. Our team will schedule a free site survey and provide a detailed, no-obligation quote based on your actual property and energy needs.
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