Hybrid Solar: Grid Power Plus Battery Backup
Get the bill savings of a grid-connected system with the peace of mind of battery backup for your essential loads during outages.
The Best of Both Grid and Battery Power
A hybrid solar system combines a grid connection with a battery bank, managed by a smart hybrid inverter that automatically decides, moment to moment, whether to use solar power directly, charge the battery, draw from the grid, or discharge the battery — all based on your configured priorities. This gives you the ongoing bill-reduction benefit of an on-grid system plus the resilience of stored backup power for essential loads such as lighting, fans, WiFi routers, and refrigeration during outages, without needing to size a battery bank for your entire daily consumption the way an off-grid system requires.
Who is this solution suitable for?
Key Benefits
Flexible Power Management
Smart switching between solar, battery and grid based on your priorities.
Backup for Essential Loads
Keep critical circuits running during grid outages.
Continued Bill Savings
Still benefits from self-consumption and, where permitted, net metering.
Smart Inverter Control
Configurable priority rules for how power sources are used.
How the System Works
- 1 Solar panels generate DC power during the day, feeding your loads first and charging the battery bank as configured.
- 2 The hybrid inverter continuously decides the most efficient source — solar, battery, or grid — for your current load.
- 3 During a grid outage, the system automatically isolates and continues powering your designated essential loads from the battery.
- 4 When the grid returns, the system resumes normal operation and, where net metering is enabled, can export surplus solar.
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Available System Capacity
Indicative starting points — final sizing depends on your actual consumption and rooftop or land area.
| System Capacity | Typically Suitable For | Approx. Area Required | Indicative Monthly Generation |
|---|---|---|---|
| 3 kW + 3 kWh Battery | Small homes needing basic backup | 270 sq. ft panel area | Essential loads (lights, fans, WiFi) |
| 5 kW + 5–10 kWh Battery | Mid-size homes with more backup needs | 450 sq. ft panel area | Essential loads plus select appliances |
| 10 kW + 10–20 kWh Battery | Larger homes or small offices | 900 sq. ft panel area | Extended backup coverage |
| 15 kW+ | Businesses needing backup for critical equipment | As per site survey | As per load priority study |
What Goes Into the System
Every installation is built from certified, compatible components sized for your load.
Solar Panels
Sized to cover daytime consumption plus battery charging.
Hybrid Inverter
Manages solar, battery and grid inputs with configurable priorities.
Battery Bank
Sized around your essential-load backup duration requirement.
Mounting Structure
Rooftop or ground-mount, based on your site.
Critical Load Panel
A separate circuit for the loads you want protected during an outage.
Monitoring App
Track solar generation, battery status and grid usage together.
Suggested Installation Process
A clear, transparent path from enquiry to handover.
Enquiry & Priority Discussion
Identify which loads must stay on during an outage.
Site Survey
Assess roof, battery placement and existing electrical panel.
System Design & Quote
Sizing for both daily solar offset and backup duration.
Documentation
Support with applicable connection and net-metering paperwork.
Installation
Panel, hybrid inverter, battery and critical-load panel wiring.
Testing & Handover
Backup switchover testing and system orientation.
What Affects Your Project Cost
- Solar panel capacity plus battery bank size (both contribute meaningfully to total cost)
- Hybrid inverter capacity and its smart-management feature set
- Number and type of loads designated as 'essential' for backup
- Whether a separate critical-load sub-panel needs to be installed
- Applicable subsidy on the grid-connected portion, where eligible
Estimated Savings Potential
Hybrid systems continue to offer meaningful bill savings from daytime self-consumption, similar to an on-grid system, while adding the value of avoided disruption (and potential losses, for businesses) during power cuts. The battery portion is primarily a resilience investment rather than a bill-saving one.
Use our interactive calculator on the homepage for an indicative estimate based on your own electricity bill and rooftop area.
Calculate Your SavingsSubsidy Applicability
The grid-connected, net-metering-eligible portion of a hybrid system may qualify for subsidy under applicable rules for residential connections, but the battery component is typically excluded from subsidy calculations. Final eligibility depends on your DISCOM's specific policy for hybrid/battery-backed connections — we verify this during your site survey.
View Full Subsidy GuideFinance Options
Because hybrid systems cost more than pure on-grid installations due to the battery, financing is often useful to manage upfront cash flow — subject to lender assessment of your profile and the total system cost.
Explore EMI & FinanceMaintenance Requirements
Hybrid systems need the combined maintenance attention of both an on-grid and an off-grid system: panel cleaning, inverter health checks, and periodic battery health monitoring to ensure backup performance stays reliable when you need it.
Solar Maintenance PlansIllustrative Project Examples
Representative examples of the scale and outcomes this solution supports.
5 kW Hybrid Home System
5 kW + 5 kWh Battery
A family prioritising WiFi, lighting and refrigerator backup during outages installed a hybrid system.
10 kW Hybrid Office System
10 kW + 10 kWh Battery
A small office kept servers and essential lighting running during grid interruptions.
3 kW Hybrid Starter System
3 kW + 3 kWh Battery
A compact home system balancing bill savings with basic backup coverage.
Why Choose Sarth Solar for Hybrid Solar
Load Priority Planning
We help you decide exactly which circuits deserve backup protection.
Inverter Configuration Expertise
Correct setup of priority rules so the system behaves as expected.
Free Site Survey
Assessment of both solar and battery placement before you commit.
Certified Installation
Safe wiring of critical-load panels and battery enclosures.
Ongoing Battery Support
Guidance on maintaining backup reliability over time.
Transparent Cost Breakdown
Clear separation of solar, inverter and battery costs in your quote.
Related Solar Solutions
Hybrid Solar — Frequently Asked Questions
A hybrid system stays connected to the grid and uses it as one of its power sources, while an off-grid system has no grid connection at all and relies entirely on solar plus battery.
The hybrid inverter automatically isolates from the grid for safety and continues powering your designated essential-load circuit from the battery, until grid power resumes or the battery depletes.
This depends entirely on battery capacity and the load connected to the essential-load circuit — larger batteries or fewer backed-up appliances extend backup duration.
Yes — during design, we help you identify essential loads (lights, fans, WiFi, refrigerator, etc.) to wire onto a dedicated critical-load panel.
Yes, due to the added battery and hybrid inverter cost, though it remains generally more affordable than sizing a battery for full off-grid independence.
The grid-connected portion may qualify, subject to your DISCOM's specific policy for hybrid/battery-backed connections, which we verify during the site survey.
Lithium-ion batteries are commonly used for hybrid systems due to their compact size, longer lifecycle and higher efficiency, though this depends on your budget and requirements.
Yes, hybrid systems are a common choice for offices or facilities that need to keep servers, security systems or select equipment running during outages.
We recommend periodic checks as part of an annual maintenance visit, along with monitoring platform alerts for any early signs of battery degradation.
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