Cows are a good source for milk, cheese, and beef jerky, but how about electricity?  Well, believe it or not, the Portland Gas and Electric Company is seeking to expand the job profile of the bovine, and has recently begun building a $16 million digester to convert simple ol’ cow manure into profitable electricity.  This, according to the publication Access to Energy, which notes that the novel facility will process a hefty 675 tons of cow manure per day from nearly 7,000 cows.  Such an input should produce approximately 4,000 kw of electricity, which means Elsie’s cost competitiveness will be hoofing it right along with other renewable energy sources. Good news like this makes you just want to say: mooo.