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Down to Earth - Editorial: The challenge of the chulha
(By Sunita Narain)
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About 24 years ago, I was in a house in a small village some distance
from Udaipur town in Rajasthan. A government functionary was explaining
how an improved chulha (cookstove) worked - they had installed it in
the kitchen. At that time, India was waking up to forests being
devastated. It was believed then (wrongly, as it turned out) the key
reason was poor people cutting trees to cook food. It was also being
understood smoke from chulhas was carcinogenic and that women were
worst hit by this pollution. The answer was to design improved chulhas
- for better combustion and with a chimney.
The woman owner of this improved stove was cooking the days meal. I
asked if she was happy with what science and government had donated to
her. Her answer was simple: Looks good, does not work. I modified it.
Her problem was that, in this area, women cooked gruel on big utensils.
Her home-made original stove was fitted to her diet and her utensils.
The improved chulha, with its small opening to streamline the fire, was
of little use. When the chulha was designed, nobody asked her what she
needed. Nobody explained to her the laws of thermodynamics, so that she
could fathom why the stove looked and worked as it did. And nobody was
there who could repair or reshape her cookstove. She had simply broken
the opening to fit her needs. Carefully calculated combustion in the
laboratory of the local university and delivered through a government
programme had turned to hot air.
I learnt my most valuable lesson that day. Designing technologies for
diversity and affordability is much more complex than sending a man to
the moon.
Consider the governments own statistics. By 1994, some 15 million
improved chulhas were introduced across the country. A survey by the
National Council of Applied Economic Research found, in many cases, the
stoves were not appropriately designed or had broken with use; over 62
per cent of the respondents said they did not know who to contact for
repairs. No surprise here. Technology deployment in poor and unserviced
households is a job the market does badly.
But why am I discussing this moment of development history? Well,
cookstoves are back. This time, on the world stage. Science has
discovered black carbon - soot - is a key contributor to climate
change; these particles warm the air; when they settle on glaciers, the
latter melt. So now, soot from chulhas poor households use - burning
wood, twigs and cowdung - stands indicted for climate change. A bill
has been introduced in the US Congress requiring the countrys
environment protection agency to regulate black carbon and direct aid
to black carbon reduction projects abroad, including introducing
chulhas in some 20 million homes.
I dont dispute the science of black carbon. There is no reason to
argue nothing should be done to improve and substitute the polluting
and noxious chulhas of the poorest. The problem is not in the intent.
The problem is in the why and the what needs to be done. Today, the
international community sees these chulhas as an easy solution: 18 per
cent of the problem comes from these implements, so replace them.
Heres a quick and simple climate fix: creating space for cars and
power stations to continue to pollute. Also, the international
community is today equating this survival emission - of poor people
with no alternative but to walk long distances to collect firewood,
sweep the forest floor for leaves and twigs and do backbreaking work to
collect and dry cow -dung, all for some oil to cook their food - with
the luxury emissions of you and I, who drive to work and live in
air-conditioned comfort.
This distinction is necessary. For policy and action. Otherwise, an
important opportunity - provided to us by the poorest in the world - to
reduce emissions in the future will be lost. Lost, once again, to the
ignorance of the international community regarding how the other half
lives and the arrogance of powerful polluters. Let us be clear: the
poorest of the world, who use polluting chulhas because they cannot
afford commercial fossil fuel, provide us the only real space today to
avert climate change.
According to 2006 International Energy Agency data, roughly 13 per cent
of the worlds primary energy supply can be classified as renewable.
Of this, new renewables - solar, wind, geothermal and cogeneration -
make up just about 4 per cent and hydroelectricity 16 per cent. The
bulk - 80 per cent - of what is renewable comes from biomass burning,
from the very chulhas of poor families. It is these families, living on
the margins of survival, already vulnerable to climate change impacts,
that are in the renewable energy net. They are not the problem. They
are the solution to our excesses.
The energy trajectory is such that these families, when they move out
of poverty, will also move out of cooking on this biomass stove. They
will walk up the fossil fuel stairway to liquid petroleum gas (LPG).
Every time they move away, as they must, one less family will be using
renewable energy; one more, like you and me, will begin polluting with
long-life greenhouse gas emissions. The difference is black soot
pollutes locally - it literally kills the women who cook - but has a
relatively short life in the atmosphere. So, unlike carbon dioxide, it
disappears in a few weeks.
The poorest, therefore, provide the world the perfect opportunity to
leapfrog - they can move from using renewable energy, currently
polluting, to using more renewable energy, but which is clean for them
and the world. It is this objective that must drive our efforts, not a
plan to pick on the poorest so we can continue to pollute.
This is not easy. It will not be cheap. Science now must invent that
cheap, biomass-based chulha that can be sold, distributed and used in
millions of diverse households across the world. Are we up to the
challenge?
Read this editorial online:
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