Today, microfinance banks see it as a solid investment, even for poor clients, and bio-gas may follow its footsteps.Hussein Farag lives in Cairo’s Darb el Ahmar district where people earn around $3 a day. Poor families, like his, cook with butane gas because government subsidies make it cheap. Knowing the subsidies might not last and interested in trying an alternative, Farag got in touch with a nonprofit called Solar CITIES, which gives grants for home bio-gas converters. Instead of dumping his kitchen waste into the sewer outside his apartment building, causing health hazards, he now puts it into the unit and converts it into usable methane gas. Farag’s unit can produce about two hours of gas a day in the summer, according to IPS News.