Qpre, India March, 2010

More information on their web site :

[Magh CM Laxmi [MCL]]( "MAGH CM LAXMI WOODGAS STOVE") is a Natural draft woodgas stove. It is a modification of [Magh CM ]( convenience of using all types of Biomass as fuel.

In many villages power is rarely available or available for few hours. In such a situation peoples' priority is for Natural draft stoves as compared to forced air stoves. The control on feeding fuel to the stove is another aspect, which people prefer. And more importantly the community wants freedom regarding the type of fuel to be used. They dont want to have stoves for different types of fuels, as they cannot afford as many stoves as types of fuels.

Magh CM Laxmi evolved from Magh CM. One of the user of Magh CM Ms. Laxmi, Peddamaduru village, has removed the fan and started feeding the sticks from side openings. She is able to use this stove with wood shavings and the sticks. She could use this stove for large scale cooking (12 members), during one of the festivals without any problem.

Keeping in view the adoptation factors and convenience of cooking MCL design is finalized. In honor of Ms. Laxmi the stove is named as [Magh CM Laxmi (MCL)]( By increasing the height of the stove (chimney effect) the soot has been reduced.

Apart from using sticks, it is also convenient to use woodshavings / pieces of wood / leaves / dung balls / dung cakes / pellets / any small pieces of biomass fuel through the elevated side feed tray (its inclination can be controlled for fuel to slide down into the combustion zone).

In both Magh CM and Magh CM Laxmi the design enables the user to control the flames in the stove through primary air control shutter, convenience of removal of biochar. This stove costs about $6. For more information on [[Magh series stoves]](

Yvonne Vögeli and How to Build the ARTI Compact Biogas Digestor, January 2010

Lively discussion on the Digestion discussion list has

Building instructions, posted on HowToPedia:
How to Build the ARTI Compact Biogas Digestor (also see the attached pdf).

Recent studies analyzing the effectiveness of this system have generously been provided by Yvonne Vögeli with Eawag / Sandec. Thier work is summarized here: Anaerobic Digestion of Organic Solid Waste


For additional information, take a look at our earlier article: Compact Biogas Plant - Compact, low-cost digester for biogas from waste starc

Dear Tom,

we had developed, during the 1990s, a series of mud stoves, which not only possessed a higher fuel use efficiency but which also reduced the harmful emissions when compared with the emissions from traditional stoves used by the local people. They are made and sold even today by rural artisans trained by us. The cost is in the range of US$2 to 5. In 2003, the Shell Foundation came forward to support our stoves programme, but we had to stop promoting our own mud stoves, and we were allowed to propagate only models approved by Shell Foundation. The approved models had much lower emissions but they carried a price tag in the range of US$15 to 25.

One of the conditions laid down in this project was that the stoves must be propagated through commercial channels, without subsidy of any kind. We failed to achieve the targets set under the project, and because of this reason, Shell Foundation withdrew their support. We still sell the stoves approved by Shell Foundation but our clients are not the rural poor.

We have not given up our efforts to improve the performance of the simple mud stoves. The latest attempt is a model in which the body of the stove is made of a porous material, which has a high insulative capacity. The emissions are much nearer to internationally accepted standards. This stove costs about US$10, and if mass produced, it can be supplied at a price of about US$6 to 7

Mahesh Yagnaraman
Ooorja First Energy

“Oorja” today represents a new way of cooking and has the potential to grow into a large,
successful business in India and globally. The initiative aims at creating a commercially
sustainable business, offering clean, safe and affordable energy solutions to identified
customers in both urban and rural households in developing countries."

More detail on the Oorja stove in The Hindu: A stove and a smokeless kitchen

Magh CM Woodgas Good Stove designed recently is a very low cost TLUD stove meant for Common Man (CM). This can be produced by the local communities with less than 8 dollars (USD). Under Magh CM series I have designed many stoves / burners in the past. This stove design is one of the most acceptable stoves, as it has the options to run on forced air / natural draft. Most importantly the convenient charcoal / ash removal facility is created at the bottom, the grate can be simply lifted using a wire and immediately refilled for reuse. The additional window for secondary air in case of no power, the primary air control and the 12 V DC powered fan makes it like a geared vehicle for multiple options to control the heat / flame / updraft. Used the most commonly available oil tin can of 12 inches x 9 inches x 9 inches with a combustion chamber of 6 inches diameter and 9 inches height for the convenience of adoption for a family of 5 members cooking needs. The tin cans are easily available all over India. Posting here the pictures and the design for your valuable comments for improvement. I am thankful to all for your valuable suggestions in the past. This is the 30th Good Stove design of Avan and Magh series since last 4 years of my research and design. Happy to share that the people who have seen this stove have paid money in advance for having these Stoves. For more pictures and info see and

The biomass feed is: Wood shavings, chips of wood, leaves, corn cobs, pieces of sticks, seeds, cowdung cakes etc.
Weight: ~15 kgs
Dimensions: 12x9x9 inches
Price: less than 8 dollars (community price)
GEO is implementing Good Stoves and Biochar Communities (GSBC) Project in Andhra Pradesh State, India with the support of GoodPlanet, France, this is a 3 years project. 


GEO fuel briquettes

is a very low cost technology, and also for making briquettes with very less effort. This is screw based system, requires very less energy and space to operate. Briquettes can be made using human power, convenient for young or old in making briquettes from various types of waste material. Small pieces of waste papers, sawdust, leaves, wood shavings, rice husk, etc. can be used as raw material. Any sticky material available in abundant can also be added if required for producing compact and strong briquettes. The cost of each such device made up of iron is less than $8 (USD) or Rs. 400. Various types of stoves are available for using the briquettes, including some of these AVAN and MAGH series stoves can be used. Magh-1 stove with little adoption can also be used for briquettes as fuel. We can also make and use special stoves for the briquettes as fuel. For more details see:

Also see | |

Stove and 1 HP Pelletizer
Brendon Mendonca, Watershed Organisation Trust April 25, 2009

WOTR StoveWOTR Stove
Pictures of the stove (4000 sold) and 1 HP pelletizer.

Following is the link to our website

WOTR 1 HP Pellet MillWOTR 1 HP Pellet Mill


Project Surya: Reduction of Air Pollution and Global warming by Cooking with Renewable SourcesV. Ramanathan and K.


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