What is an Off-Grid Wind System?
An off-grid wind system (also called a stand-alone or autonomous power system) generates and stores all the electricity needed for a site without any connection to the utility grid. It combines a vertical wind turbine, solar PV panels, lithium battery storage, and an inverter/charge controller into one self-contained installation.
For thousands of sites across India — remote farms, telecom towers, mountain resorts, border posts, research stations — off-grid is the only viable power solution. Even where grid exists but is unreliable, off-grid eliminates outages, fuel costs, and pollution from diesel generators.
Off-grid vs hybrid: A hybrid system uses the grid as backup. An off-grid system has no grid connection — all power comes from your wind turbine, solar panels, and batteries. We design both based on what your site actually needs.
Use Cases for Off-Grid Wind & Solar
- Telecom towers — replace diesel gensets with silent, fuel-free renewable power
- Remote farms — power irrigation pumps, cold storage, dairy and processing equipment
- Weather stations and research — autonomous monitoring sites with 24×7 power
- Border outposts and forest stations — independent of grid availability
- Mountain resorts and lodges — eco-tourism with zero grid impact
- Construction site offices — temporary power without diesel
- Village micro-grids — community power for un-electrified hamlets
System Architecture
A complete off-grid system from Windora includes:
- Vertical wind turbine — Helical or Tulip model, sized to site wind resource
- Solar PV array — typically equal or greater capacity to wind, for daytime generation
- Charge controller — manages multiple sources, prevents over-charging
- Lithium battery bank — LiFePO4 chemistry, designed for 10+ years, 6,000+ cycles
- Hybrid inverter — converts DC to clean AC sine wave, handles surge loads
- Remote monitoring — GSM/4G dongle for real-time performance data & alerts
- Optional diesel back-up — emergency-only generator for extended low-wind/low-sun periods
Typical Configurations
| Application | Wind | Solar | Battery | Daily Output* |
|---|---|---|---|---|
| Telecom Tower (small) | 2 kW | 3 kW | 10 kWh | ~15 kWh |
| Telecom Tower (large) | 5 kW | 10 kW | 30 kWh | ~45 kWh |
| Remote Farm Pump | 3 kW | 5 kW | 15 kWh | ~25 kWh |
| Mountain Lodge | 5 kW | 8 kW | 40 kWh | ~38 kWh |
| Village Micro-grid | 10 kW | 15 kW | 80 kWh | ~75 kWh |
| Research Station | 5 kW | 8 kW | 30 kWh | ~38 kWh |
*Daily output depends on site wind & solar resources. Custom sizing for each project.
Why Off-Grid Wind Beats Diesel
| Parameter | Diesel Generator | Windora Off-Grid |
|---|---|---|
| Cost per kWh | ₹15–25 | ₹0 (after payback) |
| Fuel logistics | Weekly delivery | None |
| Noise | 75–95 dB | < 35 dB |
| Emissions | High CO₂ & particulates | Zero |
| Maintenance | Frequent oil, filter, service | Annual visual check |
| Theft risk | Fuel often stolen | Nothing to steal |
| Lifespan | 5–8 years | 25+ years |
Custom Engineering Process
- Site survey — wind & solar resource analysis, load profiling, terrain study
- System sizing — turbine capacity, panel area, battery autonomy days
- Design package — single-line diagram, civil drawings, BOM, written quote
- Procurement & logistics — to remote sites including hilly & border regions
- Installation — typically 5–15 days depending on site access & system size
- Commissioning & training — handover with local operator training
- Remote monitoring — 24×7 performance tracking with proactive alerts
Service Across India
We deploy and service off-grid systems anywhere in India — from coastal islands to Himalayan high passes, from Rajasthan deserts to North-East forests. Major hubs: Mumbai, Pune, Delhi, Bangalore, Chennai, Hyderabad.
FAQ
What does an off-grid system cost in India?
Pricing depends heavily on site, load profile, and battery autonomy. Indicative ranges: Small telecom (5 kW total) ₹4-7 lakh. Farm pump (8 kW total) ₹7-12 lakh. Mountain lodge (13 kW + 40 kWh) ₹18-28 lakh. Village micro-grid (25 kW + 80 kWh) ₹35-55 lakh.
How many days can the system run without sun or wind?
We typically design for 2-4 days battery autonomy — meaning the system can sustain critical loads for 2-4 days with zero generation. Beyond that, India almost never sees back-to-back zero-wind zero-sun days, but optional diesel backup covers black-swan events.
What battery type do you use?
LiFePO4 (Lithium Iron Phosphate) — safer than lithium-ion, longer cycle life (6,000+ cycles), no thermal runaway risk, lower lifetime cost per kWh than lead-acid despite higher upfront price. Designed for 10+ years of daily cycling.
Can the system be monitored remotely?
Yes. Every Windora off-grid installation comes with cellular/GSM monitoring — you (and we) can see live generation, battery status, and load consumption from any phone or laptop. Automatic alerts for low battery, faults or maintenance needs.