Michael's Dispatches

Gobar Gas II


This cutaway is a training plant in Cambodia.  The construction is slightly different than the Nepalese photos above.

There are many types including even a plastic bag and prefab fiberglass versions.  The basics are the same.  Gas is collected from the vertical pipe at the top of the 'collection dome.'


According to Saroj Rai, the Executive Director of the Biogas Sector Partnership (BSP-Nepal) in Kathmandu, which oversees the Biogas Support Program (BSP), the idea came to Nepal in 1955, when Bertrand R. Saubolle constructed and demonstrated a plant.  In 1975/76 the Nepalese government installed 199 individual plants.  But biogas truly took off when the Dutch launched a large-scale program in 1992.

Today, an average-sized home installation might cost US $530—big money in Nepal—but subsidy mechanisms and microfinance schemes have led to the installation of approximately 204,000 units in the last two decades.  The BSP program estimates that, with subsidies, another 500,000 units should be built.

It’s not just Nepal. Other poor Asian countries have started.  Biogas has become so popular in Vietnam that many farmers have it installed on their own, without subsidy.  Subsidies vary greatly from up to 50% in countries like Laos, to 13.5% in Vietnam. The size of the subsidy required to persuade farmers to install the equipment is a reflection of both the relative wealth of farmers, and the priority they place on having a reliable substitute for wood, charcoal and other fuels, as well as the value of the fertilizer.

Millions of Gobar Gas units current operate in India and China.

Women, Children and Trees

These women and children in a village near Bhaktapur, Nepal, used to spend hours a day collecting wood.   Now the family has Gobar Gas.   The two girls are 12 and 13 years old, go to school, and their English is good.

In Afghanistan and Nepal, poor women use wood-burning stoves to cook inside poorly ventilated homes—while their children crawl around the smoky, sooty rooms. This leads to a high rate of respiratory and eye problems.  The homes are like smoke chambers in Nepal, and seem even worse in Afghanistan.

Before coming to the biogas sector, Mr. Rai worked in photovoltaic energy.  “Biogas has much greater socio-economic benefits,” said Mr. Rai in his Kathmandu office, “but biogas is not sexy like photovoltaic, which mostly helps men.  Biogas mostly helps women—the men don’t really notice because they still get cooked food, so why would a man invest 25,000 rupees?  But men will invest in photovoltaic because they get the sexy solar panel,” he said.  “Even women sometimes will opt for photovoltaic solar power because they don’t realize the headaches, coughing and eye problems come from cooking.”

Subarna Budhathoki, a 52-year-old mother of five, was lucky and spent only about four hours each day collecting wood in the jungle, then hours cooking over wood in a smoky house.  Now she uses that time to grow vegetables to sell in the market.  She was proud to say her son just went to Japan.

“Forget about the environmental benefits,” said Mr. Rai.  “People don’t see the value in saving the trees.  Unless they are very enlightened they are reluctant to try biogas.  It’s about social marketing.  These types of products are not easy.  But once you install a Gobar Gas plant, the woman typically says, ‘Why didn’t you tell me about this twenty years ago!’ Once they experience the benefits they are overwhelmed and social marketing is very easy.”

“Some women spend more than twelve hours per day, six days per week collecting firewood,” he said, “and children who could be in school are out collecting wood.” Those are extremes, to be sure, but as a rule women and children spend hours a day collecting fuel.  During walks in the mountains it’s common to see children out collecting wood in little baskets. Given a choice, Nepalese mothers prefer that their children go to school.

A Nepalese woman makes us tea with her Gobar stove.  Efficient stove design is important to maximize the hours of cooking available.  A huge biogas industry has developed in China and biogas appliances are exported worldwide.

Success: the 18-year-old girl can go to school instead of fetching logs out of the jungle for cooking fuel.  Educated moms make educated kids.

This family has Gobar Gas but the mom, in the role of farrier, was having a hard time getting the little girl shod.  The girl was no more helpful than a horse and she kept her eyes on me as if a giraffe had walked into the village.  At first she was shy, then before heading off to school started modeling for the camera.


Add comment

Due to the large amount of spam, all comments will be moderated before publication. Please be patient if you do not see your comment right away. Registered users who login first will have their comments posted immediately.

Security code

Reader support is crucial to this mission. Weekly or monthly recurring ‘subscription’ based support is the best, though all are greatly appreciated.  Recurring and one-time gifts are available through PayPal or Authorize.net.




My BitCoin QR Code

This is for use with BitCoin apps:


You can now help support the next dispatch with bitcoins:

Donate Bitcoins