Improved Cookstoves
Stoves engineered to burn solid fuel more efficiently and vent or reduce smoke.
SDG 7 Affordable & Clean EnergySDG 3 Good Health & Well-beingWhat is it?
Improved cookstoves are biomass or charcoal stoves designed with better combustion, insulation, or chimneys to use less fuel and release less smoke than an open fire.
Why does it matter?
They offer a lower-cost step toward cleaner cooking where electricity or LPG are unaffordable or unavailable, potentially saving fuel and reducing smoke.
How does it work?
Improved airflow, combustion chambers, and sometimes chimneys raise burn efficiency and channel emissions away from the breathing zone.
Who benefits?
Households reliant on biomass can cut fuel costs and gathering time, and cleaner-burning models can reduce cooks’ smoke exposure.
Who may be disadvantaged?
Many “improved” biomass stoves still fail to reach WHO air-quality targets, so users may gain little health benefit while assuming they are protected.
What evidence exists?
Field trials are mixed: fuel savings are common, but health improvements are inconsistent, largely because emissions often stay above safe thresholds and use is not exclusive.
What tradeoffs exist?
Cheaper and more scalable than fuel switching, but frequently insufficient to clean the air; the gap between lab and field performance is a recurring problem.
Common misconceptions
“Improved” does not automatically mean “clean” — only a subset of these stoves meet the WHO indoor air guidelines for particulate and carbon monoxide.
What you can do next
Review the trial evidence in the cookstove health RCT before assuming a stove will deliver health gains.