Daily digest

Study: Fracking not to blame for water contamination

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FRACKING: An Ohio State study finds that faulty well casings — not fracking — are responsible for water contamination near shale gas operations in Pennsylvania and Texas. (Columbus Dispatch)

***SPONSORED LINK: Register now for the Midwest Energy Policy Conference 2014Sep. 30-Oct. 1 in St. Louis!***

WASTE-TO-ENERGY: The market is improving for biodigesters in Minnesota and elsewhere, and construction is delayed at a waste-to-energy facility in Iowa. (Midwest Energy News, Cedar Rapids Gazette)

OIL: New pipeline projects mean the nation’s largest oil hub, in Cushing, Oklahoma, continues to grow; and Canadian environmental groups threaten legal action over Enbridge’s plan to increase oil sands flows into the U.S. (Tulsa World, Toronto Globe & Mail)

WIND: Developers of three more Ohio wind projects seek extensions on construction. (Columbus Dispatch Business First)

GRID: A court ruling on demand response could spike energy bills by 20% in Illinois. (Crain’s Chicago Business)

ALSO: How thousands of residential water heaters could serve as a “virtual power plant” to help manage the grid. (EnergyWire)

COAL: The Government Accountability Office increases its estimate for coal plant retirements by 2025. (The Hill)

FRAC SAND: A Texas company strikes it rich on Wisconsin silica sand, and a sand mining operation threatens Minnesota’s Renaissance Festival. (Wall Street Journal, Minneapolis Star Tribune)

PIPELINES: TransCanada applies for a new permit for Keystone XL in South Dakota, pipeline developers face opposition in North Dakota, and Michigan residents want more transparency about a proposed natural gas line. (Associated Press, Forum News Service, MLive)

***SPONSORED LINK: On Oct.29, experts will converge on Madison, Wisconsin to discuss the energy, water and food challenges created by growing cities. Hosted by the Wisconsin Energy Institute. Register before Oct. 1 and save 20%.***

TRANSPORTATION: Chicago becomes the first city in North America with an all-electric garbage truck. (CleanTechnica)

COMMENTARY: Energy efficiency investments are paying back $3-$4 for every dollar spent. (Christian Science Monitor)

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