Rentricity sees opportunity in helping water utilities reduce their energy costs. The company’s technology makes use of the high water pressures inside pipes to produce electricity, which can then be sold to the local electric utilities.
The water that sloshes through city pipes can both quench your thirst and generate electricity. However, the latter is far less common. But that’s the proposition from startup Rentricity, which has developed equipment that uses water pressure to produce electricity and helps water suppliers reduce their energy costs.
The New York City-based company was the runner-up for the grand prize in this year’s Cleantech Open competition and has seen its technology installed at two water treatment plants in the Pittsburgh region and one in Keene, New Hampshire. Its biggest project, its fourth one, is scheduled to come online in the first quarter of 2013 in the Palos Verdes area of Los Angeles County.
...Rentricity’s technology makes use of the highly pressured water that flows through pipes to be delivered to neighborhoods. After leaving the treatment plant, water typically goes through the water utility equivalent of substations (concrete underground regulator vaults) where the flow and pressure are reduced as the water gets ready to enter the smaller pipes of homes and businesses.
The gear is designed to handle pipes from 10-inch to 36-inch in diameter; the generators range from 30 KW to 350 KW. Rentricity also has designed equipment in the 5-30 KW range in a partnership with water pump and treatment equipment maker Xylem. The two companies are looking at demonstrating the new gear in two sites, located in Pennsylvania and Nova Scotia, Canada.