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Big Module System

For Homes to Become LPG Free

The Big Module System is designed for users who generate larger quantities of organic waste and want to significantly reduce or replace LPG usage.

It is suitable for large homes, housing societies, restaurants, and institutions.

Key Details

  • Waste Capacity: Customised based on daily waste (kg/day)

  • Gas Output: Up to 3 hours of cooking per day

  • Space Required: ~12 × 8 ft (with 1000L gas balloon)

How Gas Output WorksImportant Consideration (Very Practical)What This Means for YouWhere It Can Be Installed

How Gas Output Works

The amount of gas produced depends on how much waste you feed into the system.

For optimal performance, around 7–8 kg of mixed wet waste (including both raw kitchen waste and cooked food waste) should be fed daily.

More consistent waste input = more consistent gas output. 

Important Consideration (Very Practical)

 In most homes, daily waste generation may not be enough to fully utilize a big module system.

To maximize output, you can:

  • Collaborate with your local waste collector (safai karmachari)

  • Collect additional organic waste from nearby households

This not only improves gas production but also:

  • Creates an additional income opportunity for waste workers

Builds a more efficient local waste management system

What This Means for You

  • Manage large volumes of waste at source

  • Significantly reduce LPG consumption

  • Move towards partial or complete energy independence

  • Create a closed-loop system for waste and energy

Where It Can Be Installed

  • Independent homes with higher waste generation

  • Housing societies and apartments

  • Restaurants and commercial kitchens

  • Institutions and canteens

Frequently asked questions

Here are some common questions about Small Module Systems

A biogas system converts  any food waste into gas through anaerobic digestion, where microorganisms break down organic waste without oxygen and produce methane-rich biogas used for cooking.
Biodegradable kitchen waste such as vegetable peels, fruit waste, leftover food, rice, dal, bread, and cooked food can be used.
Approximately 1 kg of food waste can produce 100–800 litres of biogas/day, which is equivalent to about 46–368 grams of LPG, depending on the type of waste. 
Absolutely, yes. Biogas systems operate at very low pressure (6-7 millibar) and include safety mechanisms, making them safe for cooking.
No. A properly sealed biogas system does not produce foul odor. Temporary smell may occur only during feeding.
A small system typically requires around 6 × 6 feet of space, If the gas balloon is placed on ground. If the gas balloon is Wall mounted then the space required is 4*4 feet.
A Big module typically requires around 12*8 feet Approx. with 1000 liters of the gas balloon which has to be kept on the ground.
A small system starts around ₹45,000, while larger systems up to 10 kg waste/day capacity start around ₹1.6 lakh, excluding transport and installation.
A well-maintained biogas system can last for 10–15 years or more.
The system provides Biogas on daily basis, slurry on weekly basis and a solid material is taken out from the system which has not been converted into gas but can be mixed with the soil and used as a compost for plants.
Gas production usually starts within 2–3 weeks after installation, and the system reaches full efficiency within a few more weeks. Once stabilized, the system produces biogas within 24 hours after the daily feeding of organic waste. 
Maintenance mainly involves daily feeding of organic waste, removing non-biodegradable materials every six months, and occasionally monitoring the system to ensure smooth operation. Vaayu provides a paid six monthly maintenance service.
It reduces food waste in landfills, lowers landfill emissions, replaces fossil fuels like LPG, and produces organic fertilizer. 
Yes. Larger systems can be installed for housing societies, apartments, restaurants, and institutions wherever food waste is generated.
Yes. Warmer temperatures generally increase gas production, while colder weather may slow it down slightly.
No. Vaayu biogas systems operate without electricity. The gas is produced naturally by microbes (living microorganisms) that break down organic waste during the digestion process.
No. Our small system has an inlet size of 4 inches. So most of our waste can go as is. Bigger items need to be reduced to 4 inches for feeding.
Biogas helps manage waste, reduces LPG usage, produces renewable energy, lower carbon emissions, and creates organic fertilizer. Most importantly it brings the power to make our cooking energy into our hands. It's a step towards a peaceful world
It depends on the amount of waste available. With sufficient waste and the right system size, biogas can replace a significant portion of LPG used for cooking. It does have the potential to replace LPG completely if an individual is ready to take initiative to achieve energy sovereignty. 
Whoa! It is very much both. Our relationship with Vaayu Mitras (i.e. you, once you install Vaayu biogas at your place) continues. We continue to meet you every six months to regularly service Vaayu and remove the solids which get collected over that period.   
We also bring other eco-friendly products, services and concepts to your doorstep every time we meet. These less harmful chemicals are easy on the nature around us and on ourselves too. We strongly recommend using them. E.g. House and personal cleaning agents like floor cleaners, vessel cleaners, laundry liquid, bio enzymes etc. 
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