Treatment Plant Operator, May 2014, by Doug Day.
http://www.tpomag.com/editorial/2014/05/nice_reward_no_risk

"The Village of Ridgewood (N.J.) Water Pollution Control Facility is cutting its costs by adding biogas and solar power generation — that’s nothing new. But leaders in this village of 26,000 did it without spending money. Instead, they entered an agreement with other parties who provided the funds in exchange for sharing in project savings and revenue."