Did you know that you could build yourself a biogas generator to power your home o farm? https://t.co/Az6UlNucx1 It’s cheaper than you thi…

— GLW Energy (@glwenergy) February 9, 2016

http://twitter.com/glwenergy/status/697183190369312768 Did you know that you could build yourself a biogas generator to power your home o farm? https://t.co/Az6UlNucx1 It’s cheaper than you thi…