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Make your own for free. Interesting. Would love to know to do that.

Its not so hard but it will be bigger than a commercial product.. u can do most of it with mud and make a nice dome for the housing... then a few pipes and things and your on your way! Ive seen a few on my travels

There's a place in Costa Rica called Rancho Mastatal, they have been dealing with a biodigester for many years now and it works great, but without collecting manure from a neighbor they wouldn't make enough gas for all their cooking. And they have quite a lot of people coming in and out. Also they told me this only really works well in hotter climates, which may be perfect in portugal.

Thanks for this’ ... we might have to have a horse or two ;)

ah man... horses too!!! I am having a rwally hard time imagining doing what I'm doing in New York instead of at ecoVillage number one in Portugal with you 😁!

Awe mate! Im feeling you!