1. Off Grid Solar Panels
Solar panels convert sunlight into DC electricity.
The panel array must be sized to generate enough energy for both daytime consumption and battery charging.
ENERGY INDEPENDENCE · BATTERY STORAGE · NO GRID REQUIRED
Off Grid Solar System in Kerala for Homes & Remote Properties
Generate, store and use your own solar electricity without depending on a regular grid connection.
An off grid solar system combines solar panels, battery storage, an inverter and power-management equipment to provide electricity independently of the utility grid. It can be suitable for remote homes, farms, plantations, estate properties, houseboats and other locations where grid access is unavailable, expensive or unreliable.
FGE Solar designs and installs complete off grid solar systems in Kerala based on your daily electricity consumption, peak loads, available sunlight and required battery backup.
No Grid Dependency
Battery Storage
Custom Load-Based Design
How It Works
How an Off Grid Solar System Works
An off grid solar power system generates electricity during daylight hours, supplies your active loads and stores surplus energy in batteries for use when solar generation is low or unavailable.
Unlike an on-grid system, a standalone off-grid system does not depend on KSEB electricity for normal operation.
2. MPPT Charge Controller
The charge controller manages electricity flowing from the solar array to the battery bank.
It helps regulate charging voltage and protects the battery system from inappropriate charging conditions.
3. Battery Bank
The battery stores solar electricity for:
- Evening use
- Nighttime loads
- Cloudy periods
- Periods when generation is lower than consumption
Battery capacity is one of the most important factors in a successful off grid solar setup.
4. Off Grid Solar Inverter
The inverter converts stored DC electricity into AC electricity that normal household or business appliances can use.
Inverter capacity must be selected according to your peak simultaneous load rather than only the solar-panel capacity.
5. Your Electrical Loads
The system supplies the appliances and equipment included in the design.
These may include:
- Lights
- Fans
- Refrigerator
- Television
- Wi-Fi router
- Water pumps
- Computers
- Agricultural equipment
- Selected air-conditioning loads
A properly designed off-grid system starts by deciding exactly which appliances must operate and for how long.
Components
What Is Included in a Complete Off Grid Solar System?
A complete off grid solar system consists of more than panels and batteries.
Off Grid Solar Panels
The off grid solar array generates the electricity required by the property.
Panel selection depends on:
- Daily energy requirement
- Available roof or ground area
- Local shading
- Module wattage
- Efficiency
- Manufacturer warranty
- Installation conditions
MPPT Charge Controller
The controller manages charging between the solar array and battery bank. Some off-grid inverters include integrated MPPT charging, while other designs use separate charge controllers.
Solar Battery Bank
Battery storage determines how much energy is available after sunset and during periods of poor solar generation.
Common battery options include:
- Lithium iron phosphate
- Tubular lead-acid
The correct option depends on budget, usable capacity, maintenance requirements, expected cycling and manufacturer warranty.
Off Grid Solar Inverter
The inverter converts DC battery power into AC electricity. It should be selected according to:
- Peak appliance load
- Motor starting current
- Battery voltage
- Required output
- Expansion plans
Mounting Structure
Solar panels may be installed on:
- RCC roofs
- Sloping roofs
- Metal roofs
- Ground-mounted structures
- Elevated structures
The mounting design must account for the site and environmental conditions.
Electrical Protection & Earthing
A professional system should include appropriate:
- DC protection
- AC protection
- Isolators
- Surge protection
- Earthing
- Cabling
- Distribution equipment
Monitoring System
Where supported by the inverter or energy-management system, monitoring can show:
- Solar generation
- Battery charge level
- Electricity consumption
- Inverter status
- Fault alerts
Use Cases
Who Needs Off Grid Solar in Kerala?
An off grid power system makes the most sense where a grid connection is unavailable, difficult or insufficient for the property's requirements.
Remote Homes
Properties located far from existing electricity infrastructure can evaluate whether installing a standalone solar system is more practical than extending a grid connection.
Farms & Plantations
Off-grid solar can power selected loads such as:
- Irrigation pumps
- Farmhouses
- Security systems
- Lighting
- Small agricultural equipment
- Monitoring devices
The system must be designed around motor-starting loads and operating hours.
Estate & Hill Properties
Plantation homes, worker accommodation and remote estate buildings in districts such as Idukki and Wayanad may benefit where utility access is limited or unreliable.
Houseboats & Backwater Properties
An appropriately designed standalone solar-and-battery system can reduce reliance on generator operation for selected electrical loads.
The system design must consider limited mounting area, weight and the operating environment.
Construction & Temporary Sites
Off-grid solar can support:
- Site offices
- Security lighting
- CCTV
- Communications
- Small tools
- Temporary accommodation
Remote Commercial Properties
Homestays, eco-resorts and other remote businesses can use off grid solar power where stable grid access is unavailable.
Suitability
Is an Off Grid Solar System Right for Your Home?
An off grid solar system for home is not automatically the best solar option for every property.
It is most suitable when independence from the electricity grid is genuinely required.
Consider Off Grid Solar If
- Your property has no practical grid connection
- Extending electricity infrastructure is expensive
- The existing supply is extremely unreliable
- You require an independent source of electricity
- Your electricity loads can be clearly planned and controlled
- You have enough space for panels and battery equipment
Consider On Grid Solar Instead If
You already have a reliable KSEB connection and your primary objective is reducing electricity costs.
An on-grid system generally avoids the additional cost of a large battery bank.
Consider Hybrid Solar If
You have a grid connection but also need battery backup during power outages.
Hybrid solar can provide a middle path between full off-grid independence and standard on-grid solar.
Pricing
Off Grid Solar System Price in Kerala
The off grid solar system price is typically higher than an equivalent on-grid system because battery storage and additional power-management equipment are required.
Indicative complete system ranges:
| System Size | Indicative Installed Price |
|---|---|
| 1 kW | ₹1.10–₹1.60 lakh |
| 2 kW | ₹1.90–₹2.70 lakh |
| 3 kW | ₹2.70–₹3.80 lakh |
| 5 kW | ₹4.20–₹6.00 lakh |
| 10 kW | ₹8.00 lakh+ |
These ranges are indicative only.
The final off grid solar power system price depends heavily on the required battery capacity.
What Affects Off Grid Solar System Price?
Major factors include:
- Solar-system capacity
- Battery chemistry
- Battery usable capacity
- Required backup duration
- Panel specification
- Inverter capacity
- Roof or ground mounting
- Electrical protection
- Site accessibility
- Cable lengths
- Motor and pump loads
- Installation complexity
Battery Capacity Has the Biggest Cost Impact
Two 5 kW off-grid systems may have very different prices.
A property needing only evening lighting and refrigeration requires much less battery storage than a property expected to run air conditioners, pumps and appliances throughout the night.
For this reason, compare quotations based on:
- Panel capacity
- Usable battery capacity
- Inverter output
- Expected autonomy
- —not only the kW rating.
Get an Accurate Off Grid Solar Price
The correct quotation requires a load assessment.
FGE Solar reviews:
- Appliances
- Wattage
- Daily operating hours
- Nighttime usage
- Peak simultaneous load
- Required backup duration
- Roof or ground area
- Location
Sizing
How to Size an Off Grid Solar System
Correct sizing is the most important part of an off grid solar electric system.
If the system is too small, the batteries may run out before the next adequate solar-charging period.
If it is unnecessarily oversized, the initial investment can be much higher than required.
Step 1 – Calculate Daily Electricity Consumption
List every appliance you want the system to operate.
For each appliance:
Power in watts × hours used per day = daily watt-hours
Add all loads to estimate total daily consumption.
Step 2 – Calculate Peak Load
Identify appliances that may operate simultaneously.
The inverter must be capable of supplying this combined load, including motor-starting requirements where applicable.
Step 3 – Decide Required Battery Backup
Determine how long the property should operate without meaningful solar charging.
This may be:
- Overnight only
- One day
- Two days
- Longer for critical remote applications
Longer autonomy requires substantially more battery capacity.
Step 4 – Size the Solar Array
The solar array must generate enough energy to:
- Run daytime loads
- Recharge the battery
- Compensate for normal system losses
Indicative Off Grid System Sizing
| Daily Consumption | Indicative Solar Capacity | Indicative Battery Storage |
|---|---|---|
| Up to 5 units/day | Around 3 kW | 15–20 kWh |
| 5–10 units/day | Around 5 kW | 20–30 kWh |
| 10–20 units/day | Around 8–10 kW | 30–50 kWh |
| Above 20 units/day | Custom | Custom |
These are starting points, not universal design rules.
Actual requirements depend on appliances, location, weather, autonomy requirement and battery usable capacity.
Batteries
Off Grid Solar Battery Options
Battery storage is the key difference between off-grid and standard grid-connected solar.
Lithium Iron Phosphate Batteries
Lithium batteries generally offer:
- Higher usable capacity
- Lower maintenance
- Compact size
- Faster charging
- High cycle-life potential
Their upfront cost is usually higher. Actual lifespan depends on battery quality, operating temperature, depth of discharge, cycle frequency and manufacturer specifications.
Tubular Lead-Acid Batteries
Lead-acid batteries generally offer:
- Lower initial cost
- Wide availability
- Familiar service infrastructure
They typically require more maintenance and provide less usable capacity from the same nominal battery rating.
Which Battery Is Better?
There is no single answer for every project.
For long-term permanent installations, lifecycle cost and usable energy should be considered alongside purchase price.
For budget-sensitive or occasional-use applications, lead-acid may still be considered where appropriate.
FGE Solar should specify the battery:
- Chemistry
- Nominal capacity
- Usable capacity
- Warranty
- Recommended depth of discharge
- Expected operating conditions
in the written proposal.
Compare Systems
Off Grid vs On Grid vs Hybrid Solar
| Feature | Off Grid | On Grid | Hybrid |
|---|---|---|---|
| Grid connection required | No | Yes | Yes / design-dependent |
| Battery required | Yes | No | Yes |
| Power during grid outage | Yes | Normally no | Yes for configured backup loads |
| Surplus export | No | Depending on applicable grid arrangement | Depending on configuration |
| Upfront cost | Higher | Lowest | Higher |
| Primary use | Grid independence | Reduce grid electricity use | Solar savings + backup |
| Best for | Remote/no-grid properties | Reliable grid locations | Grid-connected properties needing backup |
Choose Off Grid Solar If
Grid independence is the main requirement.
Choose On Grid Solar If
Your property has reliable utility electricity and your main objective is reducing electricity imports.
Choose Hybrid Solar If
You want a grid connection together with battery backup.
Installation Process
Off Grid Solar System Installation Process
FGE Solar designs each off grid solar system installation around the property's actual electrical loads.
1. Site & Load Assessment
We assess:
- Daily electricity consumption
- Essential appliances
- Peak load
- Nighttime use
- Motor and pump loads
- Available roof or ground area
- Shading
- Existing electrical installation
- Required autonomy
2. Custom System Design
The proposal defines:
- Solar-panel capacity
- Battery capacity
- Battery chemistry
- Inverter rating
- Charge-controller configuration
- Mounting structure
- Electrical protections
- Expected backup capability
- Project cost
3. Equipment Selection
Panels, battery, inverter and balance-of-system equipment are selected according to the approved design.
4. Solar Panel & Battery Installation
The team installs:
- Solar array
- Mounting structure
- Battery bank
- Inverter
- Charge-control system
- Cabling
- Earthing
- Protection equipment
5. Testing & Load Verification
The completed system is tested to confirm:
- Solar generation
- Battery charging
- Inverter operation
- Load handling
- Protection functionality
- Monitoring operation
6. Handover & User Guidance
Customers receive guidance on:
- Battery charge level
- Load management
- Monitoring
- Maintenance
- System limits
- Fault alerts
- Warranty procedures
Benefits & Limitations
Benefits and Limitations of Off Grid Solar
Benefits
- Grid Independence — The property can operate without relying on a normal grid connection.
- Power After Sunset — Battery storage provides electricity when solar panels are not generating.
- Suitable for Remote Locations — Off-grid systems can provide electricity where grid extension is impractical.
- No Generator Fuel for Normal Solar Operation — A properly sized solar-and-battery system can reduce or eliminate routine generator use for the loads it was designed to serve.
- Predictable System Design — Electricity supply is based on installed generation and storage rather than utility availability.
Limitations
- Higher Initial Cost — Battery storage makes an off-grid system more expensive than a comparable on-grid installation.
- Battery Replacement — Battery performance declines over time and should be included in long-term ownership cost.
- Consumption Must Be Managed — Adding large new appliances may require battery, inverter or panel upgrades.
- Surplus Electricity Cannot Normally Be Exported — Once batteries are full and loads are satisfied, additional generation may not be usable unless the system has another suitable destination for that energy.
- Cloudy Weather Matters More — Off-grid systems must be designed conservatively because there is no normal grid supply available to cover an energy deficit.
Subsidy
Does Off Grid Solar Qualify for PM Surya Ghar Subsidy?
The standard PM Surya Ghar Central Financial Assistance for residential consumers is structured around eligible grid-connected rooftop solar installations.
A standalone off-grid solar system that operates without a grid connection does not normally fit that residential CFA route.
If subsidy eligibility is an important objective, compare an on-grid or suitable hybrid configuration and confirm the current scheme requirements before purchase.
FAQ
Frequently Asked Questions About Off Grid Solar Systems
An off grid solar system generates and stores electricity independently of the utility grid. Solar panels generate power during daylight, batteries store energy, and an inverter supplies AC electricity to the property's appliances.
Indicative installed prices currently range from approximately ₹1.10–₹1.60 lakh for 1 kW, ₹2.70–₹3.80 lakh for 3 kW and ₹4.20–₹6.00 lakh for 5 kW. The final cost depends heavily on battery capacity and backup requirements.
An indicative fully installed 5 kW system can cost around ₹4.20–₹6.00 lakh. The price may be higher where a larger battery bank, premium lithium storage, difficult mounting or high electrical loads are required.
Yes, if the system is designed for the home's actual consumption and peak load. However, running large loads such as multiple air conditioners, electric water heaters and pumps requires significantly more panel, inverter and battery capacity.
Battery capacity depends on:
- Daily consumption
- Nighttime load
- Required backup hours
- Battery chemistry
- Desired autonomy
- Maximum allowable depth of discharge
A load audit is required for accurate sizing.
Yes, but solar output falls during periods of heavy cloud. For this reason, off-grid systems in Kerala should be designed with adequate battery storage and conservative generation assumptions.
Ready to Build Your Off Grid Power System?
Get a system recommendation based on how much electricity your property actually needs.
FGE Solar can assess:
- Daily energy consumption
- Peak load
- Essential appliances
- Solar-panel capacity
- Battery-storage requirement
- Inverter size
- Required autonomy
- Roof or ground area
- Off grid solar system price
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Plan Your Off Grid Solar Installation in Kerala
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Estimate Your Electricity Requirements →
Review your electricity consumption before selecting solar and battery capacity.
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