MNRE Empanelled | KSEB Approved | 10 kW to 500 kW+
Commercial & Industrial Solar Installation in Kerala
FGE Solar handles commercial solar installation in Kerala for factories, hospitals, hotels, schools, warehouses and offices, from 10 kW rooftop systems to 500 kW+ industrial plants. We size the system to your KSEB bills and working hours, take care of KSEB approval and net metering, and maintain the plant once it is running.
Our 25 kW system on an Ernakulam warehouse saves the owner about ₹35,000 a month and pays for itself in 3.2 years. Tell us about your building and we will show you what solar can do for your bill.
All 14 districts
MNRE empanelled
10 kW to 500 kW+
At a glance
Commercial solar in Kerala at a glance
- System sizes
- 10 kW to 500 kW+
- Indicative cost
- ₹40,000 to ₹55,000 per kW before GST for larger plants
- Generation
- About 4 units per kW on a sunny day, around 1,400 units per kW over a year
- Roof space
- About 100 sq ft of shade-free roof per kW
- Typical payback
- 3 to 5 years; 3.2 years on our published 25 kW Ernakulam warehouse
- Approvals
- KSEB feasibility, connectivity and metering, handled by FGE
Indicative prices as of October 2026, from the same per-kW band used on our Kerala installation-cost guide. Generation is an estimate for a shade-free roof. Your final price comes after a free site survey.
Business Case
Why Kerala Businesses Are Investing in Commercial Solar Power
For many businesses, electricity is a recurring operating expense that increases as production, cooling, refrigeration, lighting and equipment use grow.
A correctly sized commercial rooftop solar system generates electricity at the same premises where it is consumed. Businesses with substantial daytime electricity demand can therefore reduce the amount of energy they purchase from the grid during solar-generation hours.
Actual savings depend on your tariff category, energy-consumption profile, solar-system capacity, generation, self-consumption and applicable KSEB/KSERC billing rules.
Reduce Daytime Electricity Costs
Commercial properties often consume a large portion of their electricity during daylight hours. A properly designed solar system can directly supply part of this requirement, reducing grid imports while solar generation is available.
The amount saved varies according to:
- Electricity tariff
- Daytime consumption
- Solar-system capacity
- Roof conditions
- Solar generation
- Metering arrangement
- Business operating schedule
Improve Long-Term Energy Cost Visibility
A solar system requires upfront capital investment but does not require fuel to generate electricity.
This can help businesses reduce exposure to a portion of future grid-electricity costs, although tariffs and regulatory conditions can change over the life of the system.
Use Available Commercial Rooftop Space
Warehouses, factories, hospitals, schools, hotels and office buildings often have substantial unused roof area.
A commercial rooftop solar project turns suitable roof space into an electricity-generating business asset without requiring additional land.
Tax & Depreciation Considerations
Solar power-generating systems may qualify for depreciation benefits under the applicable income-tax rules.
The tax impact depends on the business entity, ownership model, applicable tax regime, date the asset is placed in service and other conditions.
FGE Solar can provide the project cost and technical documentation required for your financial evaluation, but businesses should confirm depreciation and tax treatment with their chartered accountant or tax adviser.
ESG & Sustainability Objectives
Commercial solar can contribute to an organisation's renewable-energy and emissions-reduction strategy by increasing the share of electricity generated from a renewable source.
Where sustainability reporting is required, generation data from the solar monitoring system can support internal energy reporting.
Lower Grid Dependence During Solar Hours
Solar cannot eliminate every electricity charge or guarantee complete energy independence.
However, it can reduce the amount of electricity imported from the grid during generation hours when matched correctly with the property's load profile.
Published Project Snapshot
25 kW Commercial Rooftop Solar – Ernakulam Warehouse
FGE Solar has published a 25 kW commercial on-grid installation completed for a logistics warehouse in Ernakulam.
- Property
- Logistics warehouse
- Location
- Ernakulam, Kerala
- System Capacity
- 25 kW
- System Type
- Commercial on-grid solar
- Solar Panels
- Adani Solar
- Inverter
- SMA
25 kW
Installed Capacity
₹35,000
Indicative Monthly Savings
3.2 Years
Payback Period
The existing FGE project listing reports indicative monthly savings of ₹35,000 and a 3.2-year payback for this installation.
Savings and payback figures from one completed project should not be treated as a universal benchmark. Each commercial property has a different electricity tariff, consumption profile, system specification and operating schedule.
Trust Health Care in Thiruvananthapuram is another published commercial installation. The clinic stayed open throughout the work. Adars V. S., Manager, said: “Our clinic was burdened by heavy KSEB bills. FGE provided a crystal-clear estimate and handled all feasibility & load rescheduling without disrupting patient care. Their ongoing technical support is outstanding.”
View Published Commercial Solar Projects
Who We Serve
Commercial Solar for Every Business Type
FGE Solar designs commercial solar solutions around each property's electricity demand, roof availability and business operations.
Factories & Manufacturing Units
Manufacturing facilities with strong daytime equipment loads can be well suited to commercial solar power. A detailed load profile helps determine how much solar generation can be consumed directly within the facility and what system capacity is technically and financially appropriate.
Warehouses & Logistics Facilities
Warehouses often combine large rooftop areas with lighting, ventilation, office equipment and material-handling loads. A commercial rooftop solar system can make productive use of otherwise unused roof space.
Hospitals & Clinics
Hospitals and healthcare facilities operate significant electrical equipment, HVAC, lighting and support systems. Solar can reduce a portion of daytime grid consumption, while critical backup requirements must continue to be designed separately through the appropriate backup infrastructure.
Schools, Colleges & Educational Institutions
Educational campuses commonly have strong daytime electricity consumption for classrooms, laboratories, offices, cooling and other facilities. Solar can help institutions reduce their long-term electricity operating costs.
Hotels & Resorts
Hotels use electricity for air conditioning, kitchens, water heating, refrigeration, lighting and guest facilities. Commercial solar can offset part of these daytime loads when the available rooftop area and load profile are suitable.
Offices & Commercial Buildings
Corporate offices, business centres and commercial buildings commonly operate during the same hours that rooftop solar is generating electricity. This can create a strong self-consumption profile for solar for commercial buildings.
Supermarkets & Retail Stores
Retail outlets use electricity for refrigeration, cooling, lighting, displays and other equipment throughout the day. A properly sized commercial solar system can reduce part of this recurring grid consumption.
Agricultural & Agro-Processing Businesses
Cold storage, processing, pumping and packaging operations can have substantial electricity requirements. The right solar configuration depends on the consumer category, load pattern, applicable scheme and grid rules.
Religious & Charitable Institutions
Churches, temples, mosques, charitable organisations and community institutions can assess rooftop solar where electricity consumption and suitable roof area justify the investment. Any grant, CSR funding or incentive should be confirmed specifically for the institution before being included in the financial model.
Investment Breakdown
Commercial Solar Panel Cost in Kerala
The commercial solar panel cost cannot be accurately determined from system capacity alone.
Two 100 kW projects can have different investment costs depending on the property, engineering requirements and selected equipment.
Factors affecting commercial solar installation cost include:
Commercial solar cost in Kerala: price by system size
Commercial solar in Kerala costs about ₹40,000 to ₹55,000 per kW before GST for larger plants, so a 50 kW system comes to roughly ₹20 to ₹27.5 lakh. Larger systems cost less per kW. Smaller plants can sit above this band. The final price depends on your roof, the panel and inverter brands, and how much electrical work the site needs.
| System size | Indicative cost (before GST) | Approx. units per month | Roof area needed | Good fit for |
|---|---|---|---|---|
| 10 kW | about ₹4.5 to ₹6.5 lakh | about 1,200 | about 1,000 sq ft | Clinics, small shops, offices |
| 25 kW | about ₹10 to ₹13.8 lakh | about 3,000 | about 2,500 sq ft | Restaurants, schools, showrooms |
| 50 kW | about ₹20 to ₹27.5 lakh | about 6,000 | about 5,000 sq ft | Hotels, supermarkets, small factories |
| 100 kW | about ₹40 to ₹55 lakh | about 12,000 | about 10,000 sq ft | Hospitals, cold storage, mid-size factories |
| 250 to 500 kW | about ₹1.0 to ₹2.75 crore | 30,000 to 60,000 | 25,000 to 50,000 sq ft | Large factories, campuses, warehouses |
Tip: when you compare quotes, ask every installer for the same panel wattage, inverter brand and scope of work. Otherwise a lower price may simply mean less is included. Use the solar calculator for a first look, then request a commercial quote.
System Capacity
Larger systems require more panels, inverter capacity, structure, cabling and associated electrical equipment.
Solar Panel Specification
Panel cost can vary according to:
- Manufacturer
- Wattage
- Module technology
- Efficiency
- Product warranty
- Performance warranty
Commercial Inverter
The inverter configuration depends on:
- Total array capacity
- Roof layout
- Electrical design
- Grid connection
- Monitoring requirements
- Redundancy requirements
Mounting Structure
The cost and design vary between:
- RCC roofs
- Metal roofs
- Industrial sheds
- Elevated structures
- Ground-mounted systems
Wind-loading, corrosion protection, waterproofing and structural conditions also influence the design.
Electrical & Safety Infrastructure
Commercial installations can require:
- AC and DC protection
- Earthing
- Lightning protection
- Isolators
- Distribution panels
- Cables
- Metering infrastructure
- Transformer-side integration where applicable
Rooftop & Structural Requirements
Additional strengthening, walkway construction, elevated structures or access improvements can increase project cost.
Battery Storage
Battery storage significantly changes the investment.
It should only be included where required by the applicable regulation, operational objective or backup strategy.
Monitoring & O&M Requirements
Larger businesses may require advanced generation monitoring, remote alerts, plant-level analytics and structured maintenance agreements.
Audit Parameters
How to Get an Accurate Commercial Solar Quote
To get a realistic cost of commercial solar energy for your facility, prepare the following details before requesting a quote:
1. Last 3–6 months of KSEB electricity bills
2. Tariff category (LT commercial / industrial or HT consumer)
3. Connected load or contract demand
4. Daytime operating hours and typical working days per week
5. Rooftop type (concrete flat roof, metal sheet shed, tile roof, etc.)
6. Approximate usable roof area
7. Structural condition of the building
8. Any significant shading from trees, parapets or adjacent structures
9. Available location for inverter installation and cable routing
10. Interest in future capacity expansion or battery storage
A credible solar installer will review these parameters and conduct an engineering site survey before providing a firm commercial solar quote.
Request Commercial Solar Cost Estimate
System Architecture
What Is Included in a Commercial Solar Power System?
A complete commercial solar power system engineered for Kerala conditions includes more than solar panels.
Commercial Solar Panels
Solar PV modules convert sunlight into DC electricity.
Panel selection should consider:
- Efficiency
- Module wattage
- Technology
- Temperature characteristics
- Available roof area
- Manufacturer warranty
- Performance warranty
- Service support
Solar Inverters
Inverters convert the DC power generated by the solar panels into AC electricity suitable for use within the facility.
Commercial systems may use one or multiple inverters depending on system capacity, roof layout and electrical design.
Mounting Structure
The mounting structure secures the panels to the roof or ground.
Commercial design must consider:
- Roof construction
- Wind load
- Structural capacity
- Drainage
- Access
- Maintenance
- Corrosion environment
Electrical Protection
Appropriate AC/DC protection, earthing, isolators and other safety equipment form an essential part of professional commercial solar power installation.
Solar Monitoring System
Monitoring allows facilities teams to track:
- Energy generation
- System availability
- Inverter status
- Historical output
- Performance issues
Optional Energy Storage
Battery storage may be included where required by regulation or where the business has a specific operational need.
Battery sizing should be based on the actual objective rather than automatically added to every commercial project.
Scope
Commercial vs industrial solar: what is different
Commercial solar usually means shops, offices, hospitals and hotels on an LT connection, typically 10 kW to 100 kW. An industrial solar power plant in Kerala is usually for factories and HT consumers, often 100 kW to 1 MW, and needs more planning on the grid side.
Connection
Commercial sites are mostly LT. Large industries are often HT, with a contract demand that limits plant size.
Roof
Commercial buildings often have RCC slabs. Industries usually have metal sheet sheds, which need rail or clamp mounting that does not cause leaks.
Grid integration
LT systems connect at the main panel. HT systems connect on the transformer side with extra protection.
Approvals
Larger and HT systems may also need Electrical Inspectorate approval, in addition to KSEB. Factories need the final connection planned around production; we schedule it on a holiday or off-shift.
Finance
Payment options: purchase, loan, PPA and tax benefits
Most Kerala businesses buy their solar plant outright or with a bank loan, and claim 40% accelerated depreciation on it. Please confirm the tax treatment with your CA.
Outright purchase
You pay upfront and own the plant. This gives the best long-term return and lets you claim depreciation.
Bank loan or EMI
Many banks offer loans for business rooftop solar. In many cases the EMI is close to what you save each month, so the system largely pays for itself. We share the papers your bank needs.
PPA (pay per unit)
A developer installs and owns the plant on your roof, and you buy the power at a fixed rate below your KSEB tariff. This suits larger sites, usually 100 kW and above, with long contracts.
Tax and GST
Owners can claim 40% accelerated depreciation. If the plant runs for less than 180 days in its first year, the claim for that year is half. GST on solar equipment was cut from 12% to 5% from 22 September 2025, which lowered the cost of complete systems. Your quote from FGE shows GST separately. See our GST on solar panels guide. PM Surya Ghar subsidy is only for homes. It does not apply to commercial or industrial solar.
How It Works
Our Commercial Solar Panel Installation Process
A structured 7-stage engineering methodology designed to minimise disruption to your everyday business operations.
01
Commercial Load Analysis
We review recent electricity bills, tariff category, sanctioned/connected load or contract demand, operational hours and consumption patterns.
The objective is to determine how much solar electricity can be effectively used by the facility and avoid unnecessary oversizing.
Output: Initial feasibility and capacity range
02
Rooftop & Structural Feasibility
Our team assesses:
- Usable roof area
- Roof type
- Roof condition
- Shading
- Access
- Structural suitability
- Existing electrical infrastructure
- Panel-layout possibilities
For larger or technically complex roofs, appropriate structural review may be required before final design.
03
Custom Commercial Solar System Design
FGE Solar develops a project-specific design based on the site's technical and commercial requirements.
The proposal can include:
- Proposed system capacity
- Panel specification
- Inverter specification
- Mounting system
- Electrical protections
- Estimated annual generation
- Self-consumption assumptions
- Indicative electricity savings
- Project cost
- Estimated payback
- Warranty details
- Installation scope
- Items excluded from the quotation
This provides a more useful basis for comparing commercial solar companies than simply comparing the lowest price per kW.
04
KSEB Documentation & Grid Approval
FGE Solar assists with the applicable utility documentation and technical process for grid-connected projects.
This can include:
- Feasibility application
- Technical documentation
- Single-line diagram
- Metering requirements
- Inspection coordination
- Connectivity documentation
The appropriate billing arrangement depends on the consumer category, project capacity and current KSERC regulations.
Final feasibility, capacity approval and metering arrangement remain subject to KSEB/KSERC requirements.
05
Professional Commercial Solar Installation
The installation is planned to minimise disruption to normal business operations wherever practical.
Work typically includes:
- Mounting structure
- Solar panels
- Inverters
- DC cables
- AC cables
- Electrical protections
- Earthing
- Monitoring configuration
- Required metering interfaces
Project duration depends on system size, site conditions, approvals, weather, roof complexity and electrical work.
06
Testing, Commissioning & Monitoring
Before handover, the system undergoes the applicable electrical and operational checks.
The commissioning process includes:
- Equipment testing
- System verification
- Monitoring setup
- Utility inspection coordination where required
- Customer/facilities-team handover
The facility receives the relevant system and operating information after commissioning.
07
AMC & Performance Support
Commercial solar should be monitored and maintained throughout its operating life.
FGE Solar can provide ongoing support for:
- Panel inspection
- Cleaning planning
- Inverter checks
- Electrical inspection
- Generation review
- Fault identification
- Preventive maintenance
- Warranty coordination
KSEB Grid Connectivity for Commercial Solar in Kerala
Commercial and industrial grid treatment should not be described as identical.
Under the Kerala State Electricity Regulatory Commission's 2025 Renewable Energy and Related Matters Regulations, eligible industrial consumers may opt for net metering for renewable-energy systems from 1 kW up to 500 kW, subject to the specified conditions.
The regulations also make net billing available to all consumers/prosumers, subject to capacity and other conditions.
The appropriate arrangement for a particular business depends on:
- Consumer category
- System capacity
- Connected load or contract demand
- Storage requirements
- Utility feasibility
- Applicable KSERC rules
Net metering: units you export are set off against units you import, so surplus power reduces your bill one for one.
Net billing: exported units are credited at a set rate, which is usually lower than your tariff. This is why using solar power on site gives the best savings.
Source: Kerala State Electricity Regulatory Commission, Renewable Energy and Related Matters Regulations, 2025. FGE prepares and files the full KSEB application for you. Read our guide to KSEB net metering.
For this reason, FGE Solar reviews the customer's electricity connection and proposed system before recommending the grid configuration.
Kerala climate
Commercial solar in Kerala’s climate: monsoon and coastal sites
Solar panels in Kerala keep working through the monsoon, but output drops on heavy-rain days. That is why we plan your savings on a full-year average, not on a sunny month. Read how monsoon weather changes generation.
Monsoon
June to August is the low season. The rain also washes the panels, and generation recovers quickly afterwards.
Coastal sites
Salt in the air corrodes ordinary steel. Near the coast we use hot-dip galvanised or aluminium structures and stainless steel fasteners. See coastal corrosion checks.
Wind
Structures are designed for local wind speeds, which matters on tall and exposed roofs.
Cleaning
Every 2 to 4 weeks in the dry months, and more often near busy roads or dusty industrial areas. AMC plans cover this after handover.
Coverage
Commercial solar installation across Kerala’s 14 districts
We install commercial solar across Kerala, with site surveys in every district.
Common Questions
Frequently Asked Questions About Commercial Solar
How much does commercial solar cost in Kerala?
Larger commercial plants in Kerala typically land between ₹40,000 and ₹55,000 per kW before GST, so a 50 kW system is roughly ₹20 to ₹27.5 lakh. The final price depends on your roof, equipment brands and electrical work, and we confirm it after a free site survey.
What size solar system does my business need?
Each 1 kW makes about 120 units a month in Kerala. Divide your average monthly daytime units by 120 to get a starting size. A business using 6,000 daytime units a month would need about 50 kW. We fine-tune this from your KSEB bills and roof space.
What is the payback period for commercial solar?
Most well-sized commercial systems in Kerala pay back in about 3 to 5 years. Our published 25 kW Ernakulam warehouse system pays back in 3.2 years. Payback is fastest when you use most of the solar power on site during the day.
How much does a 100 kW solar plant cost in Kerala?
A 100 kW plant in the ₹40,000 to ₹55,000 per kW band costs about ₹40 to ₹55 lakh before GST. It produces around 12,000 units a month and needs about 10,000 sq ft of shade-free roof. Bigger plants cost less per kW than smaller ones. The quote is confirmed after survey.
How much roof area does a 50 kW or 100 kW system need?
About 5,000 sq ft for 50 kW and 10,000 sq ft for 100 kW, based on roughly 100 sq ft per kW of shade-free roof. Metal sheet roofs can often fit a little more, since the panels can sit closer to the roof.
How many units does a 100 kW solar plant generate per day in Kerala?
About 350 to 450 units on a typical sunny day, and less on heavy-rain days. Over a full year, that adds up to roughly 1.3 to 1.45 lakh units.
Can we claim accelerated depreciation on commercial solar?
Yes. A business that owns its solar plant can claim 40% accelerated depreciation under income tax rules. If the plant runs for less than 180 days in its first year, the claim for that year is half. Please confirm with your CA.
Is a loan or EMI available for commercial solar in Kerala?
Yes. Most banks offer loans for business rooftop solar, and the EMI is often close to the monthly savings. We share the documents your bank needs.
Can solar be installed without stopping production or patient care?
Yes. Most of the work happens on the roof, and the final connection needs a short shutdown, which we plan on a holiday or off-shift. Trust Health Care in Trivandrum stayed open throughout its installation.
How does the monsoon affect commercial solar generation in Kerala?
June to August is the low season, with lower output on heavy-rain days. The system still works, the rain helps keep the panels clean, and we size your plant on the full-year total so the payback figure stays realistic.
Is PM Surya Ghar subsidy available for commercial solar?
No. PM Surya Ghar covers homes only. Businesses benefit instead from 40% accelerated depreciation and lower GST on solar equipment.
Does FGE handle KSEB approval and maintenance?
Yes. We prepare and file the full KSEB application, coordinate the inspection and metering, and offer AMC plans for cleaning, inspections and generation checks after handover.
Solar Planning Hub
Plan Your Commercial Solar Installation in Kerala
Before approving an investment, understand the technical, financial and regulatory requirements of your project.
- Calculate Your Potential Solar Savings: Use your current electricity consumption as the starting point for an indicative system estimate.
- Understand KSEB Grid Rules: Review the current net-metering and net-billing requirements for solar projects in Kerala.
- Explore On-Grid Commercial Solar: Understand how grid-connected solar can offset daytime electricity consumption.
- Explore Solar AMC & Maintenance: Protect system performance through preventive inspection and ongoing maintenance.
- View Commercial Solar Projects: See published FGE Solar installations and project specifications.
- Find Commercial Solar Installation Near You: FGE Solar provides commercial solar installation support across Kerala's 14 districts.
Customer Stories
Countless Families & Businesses Saving on Their Electricity Bills Every Month
Real Kerala homeowners and clinics. Real KSEB bill savings. Watch their stories.
Adars V. S.Manager, Trust Health Care · Trivandrum
Suresh R.Retd. Senior Superintendent, KSEB · Kattayikonam
C. YesodharanVidhya Gardens · Thiruvananthapuram