Solar Panel Installers in Nepal: Homeowner Checklist

A reliable solar installation begins with a measured electricity demand, roof inspection and written equipment specification, not a promise of a particular saving.

Collect twelve months of electricity bills where possible. Separate daytime loads from evening loads and note power cuts, pumps, induction cooking, air conditioning and future appliance plans. Ask installers to show the assumptions behind expected generation rather than promising fixed savings.

Request the exact panel manufacturer, model, rated output, inverter type, battery chemistry if applicable, mounting hardware and warranty issuer. Compare grid-connected, hybrid and off-grid configurations separately. An inverter's rated capacity is not the same as annual usable energy.

An installer should assess roof condition, shade at different hours, safe cable routing, grounding, surge protection and maintenance access. A roof with waterproofing problems needs repair before mounting. Confirm whether structural assessment or approvals are required for your building.

A useful quote itemises panels, inverter, mounting, wiring, protection devices, labour, transport, taxes, testing and after-sales service. Ask who will handle repairs and how long parts are expected to take. Do not compare only the headline cost per watt.

Verify the legal business name, physical contact, product warranty documents, service response procedure and a written installation timeline. Avoid paying the entire amount without a documented milestone plan. Ask for commissioning measurements and an operating demonstration.

Ask for a site survey rather than a quote based only on roof area. A competent proposal should explain which parts of the roof are shaded, how modules will be mounted without damaging waterproofing, and where electrical protection will be placed. Request a simple system diagram identifying the inverter, isolation switches, meter arrangement and any batteries. Ask whether the design assumes a grid connection and what happens during an outage. Many grid-connected systems do not provide backup power automatically.

A system's total cost includes installation, maintenance, possible inverter replacement and battery replacement if installed. Request the warranty duration for each component separately and identify whether labour and transport are covered. Ask for a realistic performance range rather than a guaranteed monthly bill reduction. Future tariffs, household demand, shade and equipment condition all affect outcomes.

Before final payment, obtain invoices, model and serial numbers, electrical test results where applicable, manuals and warranty contacts. Have the installer demonstrate normal startup, shutdown and fault reporting. Keep photographs of cable routing and mounting for future maintenance. Avoid DIY work on live electrical systems; use qualified personnel.

Give all bidders the same electricity-use data and desired backup requirements. Compare system capacity, equipment model, protections, installation method, warranties and aftercare side by side. A quote that omits earthing, surge protection or roof repairs is not necessarily cheaper after the omissions are addressed.

A clear scope, competent delivery and documented accountability. Compare like-for-like offers and ask about hidden costs.

No. A business listing is not proof of licensing, government approval or ownership verification. Check any regulated credentials with the issuing authority.

Start with the category directory, shortlist relevant services, confirm each business's current contact details and request comparable written information.

Browse Ratings Nepal categories and recent guides. Share an honest firsthand review where that functionality is available. Avoid relying on anonymous claims without supporting evidence.

Photo: "solar panels" by spanginator, CC BY-SA 2.0 (https://creativecommons.org/licenses/by-sa/2.0/).

Editorial checklist updated 13 November 2026. Providers and service conditions should be rechecked before making a purchase.