Dog poo powers San Francisco

As one of America’s greener cities, San Francisco recycles around 60% of its waste.

However, recycling the city’s 6,500 tonnes of animal excrement each year has proven somewhat difficult, until now. Rubbish company, Norcal Waste, has opened a new facility that will turn dog poo into natural gas.

Norcal plans to feed its $1 million methane digster with waste from one of San Francisco’s dog parks. Over a period of weeks, the feces will be broken down by bacteria, resulting in methane gas. The gas can then be used for heating, electricity generation and, perhaps less acceptably, cooking.

With underground gas reserves quickly running out, it’s about time all animal waste was turned into useful energy.

More in the Mercury News.