The Vietnam Household Biogas Project is installing biogas systems across Vietnam which use waste from household cattle and pigs to create electricity for the home. This one-of-a-kind project is spreading renewable energy to households across Vietnam.
Small "plant" nearly covers the energy use of a single American home. Not much space taken up. This is probably way more than I'd need for off-grid living in a Yurt. But I could harness solar and wind power for all my electric needs.
1 day of compost = two propane tanks for the bbq. As a propane user, this is a must! The builder told me that is you have one cow, the manure from one day is enough for most home use. Heck-even as an outhouse it would work .