“Due to the fuel crisis in Nepal now we don’t get gas for cooking. I just wanted to ask you if you have some idea regarding building a solar cooker. I did some search in google but I could not come up with a concrete idea. And yeah I have a methane gas chamber in my house. Do you have some idea to improve that as well because its not enough to cook 2 meals. Thank you.” Prateek
Owen: Solar cookers are wonderful! There are lots of free plans on this site: http://solarcooking.org/plans/ I’m sure you can find many more by searching for free solar cooker plans.
Biogas plants (methane digesters) are most practical for farms or communal toilets. You need to connect numerous households or add manure from animals.
Search our blog for twig stoves, rocket stoves and smokeless stoves. See links below. You can make a stove super efficient so you only need twigs, grass, plant stalks, etc.
Low Cost Twig Stoves
Small Stoves for Camping and Emergencies
These two blog posts have links to dozens of the best videos and websites on twig stoves, camping stoves and emergency stoves.