Inverter & Solar Installation

Load shedding barely happens anymore in Nepal, but that hasn't made backup power pointless. Voltage swings during the monsoon, storm-related grid outages, and electricity bills that keep creeping up still give homeowners and businesses good reason to install a proper inverter or solar system. Think of it less as a luxury purchase and more as a long-term bet on not being at the mercy of the grid. Construction Sewa designs, supplies, and installs complete inverter and solar setups across Nepal everything from a single-room battery backup to full rooftop solar for factories and commercial buildings. Need a plain inverter for the house, or a hybrid solar system with net metering for your business? Either way, our licensed electrical and solar technicians run the whole job: site inspection, design, installation, testing, and service after the fact.

Why Install a Solar Power System?

•     Lower monthly electricity bills less dependency on the grid means smaller bills, plain and simple.

•     Reliable backup during outages, voltage fluctuations, or grid maintenance work.

•     Solid long-term return on investment, since solar systems have few moving parts and don't ask for much upkeep.

•     A smaller carbon footprint, and a step toward Nepal's broader renewable energy goals.

•     Better resale value for homes and commercial buildings alike.

•     Protection for sensitive electronics, medical equipment, and industrial machinery against voltage spikes.

•     Systems that scale add capacity later as your household or business load grows.

Our Inverter & Solar Installation Services

Construction Sewa runs end-to-end solar installation services across Nepal for homes, businesses, and industrial sites, including:

•     Residential solar installation for homes and apartments

•     Commercial solar installation for offices, hotels, and retail spaces

•     Industrial solar installation for factories and warehouses

•     Rooftop solar panel installation and structural mounting

•     Solar inverter installation and replacement

•     Solar battery backup system design and installation

•     Net metering coordination and grid interconnection support

•     Solar maintenance services and annual servicing contracts

•     Solar repair services for systems that are underperforming or faulty

As a solar panel contractor working across the country, we source equipment from manufacturers we trust, and we size each installation to the property's actual load not a generic package pulled off a shelf.

Types of Solar Systems

On-Grid Solar System

An on-grid, or grid-tied, solar system connects straight to the national grid with no battery storage involved. Power you generate but don't use during the day can be exported to the grid, usually through a net metering Nepal arrangement, and pulled back when your panels aren't producing enough. It's the most affordable route for properties with dependable grid access that don't urgently need outage backup.

Off-Grid Solar System

An off-grid system runs entirely independent of the utility grid, storing everything it generates in batteries for use whenever it's needed. This setup fits remote properties, farms, and locations without stable grid access though it does need a bigger battery bank and more careful planning around how much load it actually has to carry.

Hybrid Solar System

A hybrid solar system takes the best of both grid-connected like an on-grid setup, with battery backup like an off-grid one. Right now, it's the configuration most Nepali homeowners and businesses lean toward, since it delivers daytime solar savings and dependable backup when the power goes out.

Types of Solar Inverters

String Inverter

A string inverter ties a series, or string, of solar panels into a single inverter unit. It's a dependable, budget-friendly pick for on-grid residential and commercial rooftops that don't deal with much shading.

Hybrid Inverter

A hybrid inverter manages power coming from both the solar panels and the batteries, and switches between grid, solar, and battery power without you noticing. It's the core piece of nearly every hybrid solar installation.

Micro Inverter

A micro inverter sits on each individual panel rather than managing the array as a whole, which helps on roofs with partial shading or panels pointing in different directions. It costs more upfront, but the performance gain on tricky roofs usually justifies it.

Off-Grid Inverter

An off-grid inverter is built to work only with battery storage no grid connection at all making it the standard pick for a fully independent off-grid solar setup.

Comparison Table of Solar System Types

Comparison Table of Inverter Types

Our Solar Installation Process

1.   Site Inspection & Load Assessment: our technician checks roof space, orientation, and shading, and works out your actual household or business electricity consumption.

2.   Mounting Structure Installation: roof or ground-mounted structures go in to hold the panels securely, accounting for wind load and roof type, coordinated with our Tin/Corrugated Sheet Roofing team wherever the roof itself needs work first.

3.   System Design & Sizing: based on that assessment, we design a system matched to your real load: panel count, inverter capacity, and a battery bank if you need one.

4.   Documentation & Approvals: we help handle the paperwork for grid interconnection and net metering registration, where it applies.

5.   Solar Panel Installation: panels get fixed, wired, and aligned for the best sun exposure available on your roof.

6.   Inverter & Battery Setup: the inverter, batteries (if part of the package), and charge controller are installed and wired into the panels and the property's electrical panel.

7.   Testing & Commissioning: we test the full system for output, safety, and correct switching between grid, solar, and battery modes.

8.   Handover & Training: we walk you through operating and monitoring the system, basic troubleshooting, and hand over the warranty paperwork.

Inverter Installation Process

For a standalone inverter or UPS setup with no solar panels involved, the process is more direct, though we don't cut corners on it.

1.   Assess your backup load requirement: lights, fans, refrigerator, medical equipment, servers, whatever needs to stay powered.

2.   Recommend an inverter capacity (VA/kVA) and battery bank size that matches it.

3.   Install the inverter and battery in a ventilated, safe location.

4.   Wire the inverter to the backup circuits you've chosen not the whole building load, unless that's specifically what you want.

5.   Test the automatic changeover between grid power and battery backup.

6.   Walk you through maintenance requirements and what the warranty actually covers.

Solar Maintenance & Servicing

A solar and inverter system doesn't need much attention, but “low maintenance” isn't the same as “no maintenance.” Our servicing covers:

•     Panel cleaning to clear off dust, pollen, and bird droppings that quietly cut into output

•     Checking wiring, connectors, and earthing for wear or corrosion

•     Battery health checks, plus electrolyte and terminal servicing where that applies

•     Inverter performance testing, along with firmware or setting updates

•     Monitoring actual output against expected generation, so a slow decline gets caught early rather than late

We'd suggest at least one professional inspection a year, with more frequent visits for commercial and industrial installations running around the clock.

Benefits of Professional Solar Installation

•     Correct sizing avoids the classic mistake of an undersized or oversized system

•     Certified electrical work cuts down fire and safety risk

•     Proper earthing and surge protection guard your investment and your appliances

•     Warranty-backed installation gives you somewhere to turn if something goes wrong

•     Access to genuine equipment through a solar installation company working Nepal-wide

•     Faster fault diagnosis down the line, since the original installation is properly documented

Common Solar & Inverter Problems We Solve

•     Reduced output from dust buildup, shading, or panel degradation

•     Batteries that won't hold charge anymore or drain far faster than they should

•     Inverters that fail to switch to backup power the moment an outage hits

•     Overheating inverters, or unusual noise coming from the unit

•     Loose or corroded wiring causing faults that come and go

•     Incorrect sizing from the original install, leading to overload trips or backup that doesn't last

•     Net metering or grid-sync errors left behind by unqualified technicians

Signs Your Property Needs a Solar or Inverter Upgrade

•     Backup time has noticeably dropped over the past year or two

•     Electricity bills are still high despite having solar already installed

•     The inverter makes strange sounds, runs hot, or throws error codes often

•     Batteries are past the 3-to-5-year mark and clearly losing capacity

•     Your household or business load has grown since the original installation also a good moment to review your Load Calculation & Panel Upgrade.

•     Visible corrosion, loose wiring, or physical damage to the panels or mounting structure

Choosing the Right Solar System

The right system for you comes down to a handful of things: how much electricity you use day to day, how much roof or ground space you've got, your budget, whether backup during an outage is a must-have, and whether net metering is something you want to pursue. A hospital or server room is going to prioritize backup reliability above almost everything else, while a homeowner mainly chasing lower bills might be perfectly happy with a simpler on-grid setup. Our engineers go through these trade-offs with you on the site visit, rather than pushing a fixed package before they've even seen the property.

Cost Factors in Nepal

Every quotation gets customized after inspection, but a few things typically move the overall cost of inverter and solar installation in Nepal:

•     Total system capacity (kW) needed to cover your load

•     Battery type and storage capacity, if backup is part of the plan

•     Roof condition, and whether extra mounting structure work is needed something our team checks alongside our RCC Roof Waterproofing service where relevant.

•     Inverter type: string, hybrid, micro, or off-grid

•     Wiring distance, cable specification, and safety equipment like surge protection and earthing, which ties into our House Wiring (New Construction) and rewiring services for older buildings.

•     Site accessibility and any structural reinforcement the property needs

We also help clients make sense of the general framework around government subsidy programs and net metering, including the interconnection standards set by the Nepal Electricity Authority and the renewable energy incentives coordinated through the Alternative Energy Promotion Centre, and how a properly documented installation supports eligibility without committing to specific figures until your local utility and municipal requirements are confirmed.

Why Choose Construction Sewa

•     Verified, experienced electrical and solar installation professionals

•     Transparent, written estimates after a proper site inspection no guesswork pricing

•     Milestone-based payments, so you pay as the work actually progresses

•     Quality checks and a formal handover with workmanship warranty terms

•     Support across Kathmandu Valley and other regions of Nepal

•     Ongoing solar maintenance and repair services once installation is done

As a solar installation company Nepali businesses and homeowners keep coming back to, we stay focused on getting the fundamentals right correct sizing, quality components, clean and code-compliant wiring so the system performs for years, not just until the warranty runs out.

Service Areas

Construction Sewa installs inverters and solar panels across Kathmandu, Lalitpur, Bhaktapur, and the surrounding Kathmandu Valley, with project support reaching other municipalities across Nepal too. Searching for the best solar installer near me in the city, or need a solar panel contractor for a site outside the valley? Share your location when you book, and we'll match you with the right local team.

Frequently Asked Questions

What is the difference between an on-grid, off-grid, and hybrid solar system?

An on-grid system connects only to the utility grid and skips the battery. An off-grid system runs entirely on batteries with no grid connection at all. A hybrid system does both grid connection plus battery backup giving you savings and outage protection together.

Do I need a solar battery backup system if I already have grid power?

Battery backup is optional for on-grid systems, but we'd recommend it if you deal with frequent outages, run sensitive equipment, or just want power security regardless of what the grid is doing.

How long does rooftop solar panel installation take in Nepal?

Most home installations wrap up in a few days, from mounting through commissioning. Larger commercial or industrial jobs can run one to a few weeks, depending on system size and site conditions.

Can I get net metering for my solar system in Nepal?

Eligibility depends on your system type, location, and your local utility's current requirements. Our team helps prepare the documentation and handles the interconnection process where it applies.

How often does a solar system need maintenance?

At least one professional inspection and panel cleaning a year is a good baseline, with more frequent checks for commercial and industrial systems running continuously.

What size inverter do I need for my home?

That depends on your backup load which appliances you actually want powered during an outage. Our technicians work this out during the site visit rather than handing you a generic number.

Ready to Switch to Reliable Power?

Whether you're after a simple inverter installation, a full rooftop solar setup, or a hybrid system with battery backup, Construction Sewa's site inspection and transparent estimate process makes it straightforward to move ahead with confidence. Book a free site visit and get a written quotation built around your property's actual load no guesswork, no hidden costs.

Call or WhatsApp: +977-9716693969, or book your free solar and inverter site visit online to get started.