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Off-Grid Solar Power Plant in Chennai

OFF GRID SOLAR PLANT IN CHENNAI

Smart Power Solutions For Homes
An off-grid solar power plant runs completely independently of the TANGEDCO grid — the right solution where grid supply is absent, unreliable, or too expensive to connect. Rooftop panels charge a battery bank during the day, and an off-grid inverter converts the stored power into AC to run your home or facility through the night and on low-sunlight days. Because the system is self-contained, capacity is sized around your total daily consumption and the number of backup days your site requires. Nantech Power Systems has been designing and installing off-grid solar systems in Chennai since 1996, managing the energy audit, system design, installation, and commissioning from a single point of contact.

OFF Grid Solar Panel

How an Off-Grid Solar System Works

  • Rooftop solar panels convert sunlight into DC electricity and feed it into the charge controller.
  • A solar charge controller regulates the power flow, protecting the battery bank from overcharging and deep discharge. A DC disconnect switch between the controller and the battery bank allows the system to be safely isolated for maintenance.
  • The battery bank stores the regulated DC electricity for use when solar output is low or absent.
  • An off-grid inverter converts stored DC power into 230V AC — the standard supply your home or facility runs on.
  • For sites with extended low-sunlight periods, a backup generator can be integrated to charge the battery bank. The generator size and integration are determined during the energy audit.
  • Under TNEB norms, batteries are not permitted on grid-connected installations — off-grid is the correct configuration where grid supply is unavailable.

Off-Grid Solar Power Plant for Homes in Chennai

For homeowners in Chennai localities where TANGEDCO supply is absent, severely disrupted, or yet to reach the area, an off-grid solar power plant delivers complete power independence without waiting for a grid connection. The system powers your home around the clock, keeping lights, fans, refrigerator, and essential appliances running by drawing from the battery bank and recharging through the day. Capacity is sized around your daily consumption and the number of backup days your household needs. Off-grid systems do not qualify for the PM Surya Ghar subsidy. A free site assessment determines the right panel capacity and battery bank size for your home.
Get a Free Home Off-Grid Quote

Off-Grid Solar Power Plant for Commercial & Industrial Use in Chennai

For farms, borewells, agricultural pump sets, remote construction sites, and industrial facilities beyond the reach of reliable grid supply, an off-grid solar power plant eliminates dependence on diesel generators and erratic TANGEDCO connections. Systems are sized to match the total daily load profile, covering pump running hours, lighting, and equipment duty cycles, with a battery bank designed for the required number of backup days. Diesel displacement is the primary financial driver: fuel and maintenance costs are removed from day one of commissioning. Nantech manages the complete EPC scope covering energy audit, system design, battery bank sizing, installation, and commissioning across Chennai and surrounding districts.
Request a Commercial Off-Grid Solar Proposal

Benefits of an Off-Grid Solar System

  • Complete energy independence, with no reliance on TANGEDCO supply or diesel generators.
  • Powers your home or facility around the clock through battery storage.
  • Eliminates recurring diesel fuel and generator maintenance costs from day one.
  • Solar panels carry a 25 to 30 year operating life, and the battery bank can be replaced independently without disturbing the array.
  • The right solution for locations where a new grid connection is unavailable or too expensive to extend.

Off-Grid Solar Sizing & Battery Backup in Chennai

Off-grid systems are sized by winter production — the period of lowest solar generation — so supply holds through the year, not just peak summer months. Before designing the panel array and battery bank, we conduct an energy audit that maps your appliance load and usage hours against the backup days your site needs. Off-grid systems in Chennai are priced from approximately ₹80 to ₹110 per watt, depending on battery capacity.
System SizeEst. Daily GenerationBattery BackupBest Suited For
1 kW4–5 units per day4–12 hoursSmall home or borewell
3 kW13–14 units per day4–12 hoursIndependent home or farm
5 kW22–23 units per day4–12 hoursLarge home or agricultural site
10 kW45 units per day4–12 hoursIndustrial facility or remote site
Get a Free Off-Grid Site Assessment

Why Choose Nantech for Off-Grid Solar in Chennai

  • Power systems specialists since 1996 with off-grid installation experience across Chennai and Tamil Nadu.
  • Every off-grid system begins with an energy audit that maps your appliance load and usage pattern against your required backup days — before a single panel or battery is specified.
  • Authorised dealer for Adani, Premier, Rayzon, and Waaree panels and Growatt, Polycab, and Deye inverters, with off-grid charge controllers and battery banks specified by site requirement.
  • Panels carry a 30-year performance warranty and a 12-year product warranty; inverters carry a 7-year warranty.
  • Complete in-house EPC scope: energy audit, system design, battery bank sizing, installation, and commissioning.

Our Off-Grid Solar Installation Process

  • Free site survey and energy audit mapping your appliance load and usage hours against your required backup days.
  • System design and battery bank sizing based on audit findings, followed by brand selection and a transparent quote.
  • Structural assessment and mounting structure installation, with equipment procured and delivered to site.
  • Professional installation of panels, charge controller, battery bank, and off-grid inverter by our in-house team.
  • System commissioning and output verification, followed by handover with complete warranty documentation.

Solar Panel & Inverter Brands We Offer

Every Nantech off-grid installation is specified from our multi-brand range based on your site load profile and battery backup requirement — not on a fixed package. Panels: Adani, Premier, Rayzon, and Waaree. Inverters: Growatt, Polycab, and Deye.

Client Testimonials

Off-Grid Solar — Frequently Asked Questions

An off-grid solar system operates independently of the TANGEDCO grid, using a battery bank to store solar energy generated during the day. Power is available at night and during low-sunlight periods without any grid connection.
Yes. Batteries are the core storage component of an off-grid system. Without them, power is only available when the sun is generating, and the battery bank size determines how many days of supply you have when solar output is low.
Backup duration depends on your battery bank capacity and daily consumption. Nantech designs the battery bank around your required autonomy days, confirmed during the energy audit before the system is sized.
No. The PM Surya Ghar subsidy applies to grid-connected residential rooftop systems only. Off-grid installations do not qualify regardless of system size or location.
Off-grid solar suits farms, borewells, agricultural pump sets, remote homes, and industrial sites where TANGEDCO supply is absent or too expensive to connect. For anyone requiring complete energy independence, it removes grid dependence entirely.

Get a Free Off-Grid Solar Assessment in Chennai

Share your site location and daily load requirement — we size the system and confirm your backup capacity before you commit to anything.

Call Us: +91 99623 98222 | 044-2486 1994 | sales@nantech.in

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