CHICAGO, IL--(Marketwired - Feb 16, 2015) - Trillium CNG™, a business unit of Integrys Energy Group, Inc. (NYSE: TEG) has signed a letter of agreement with the Monterey Regional Waste Management District in California to build, own and operate a new compressed natural gas (CNG) refueling station to power the district's CNG refuse trucks. The station will be built at the Monterey Regional Environmental Park located at 14201 Del Monte Boulevard in Marina, Calif.

By mid-2016, the District will extrude the methane gas produced at the Monterey Peninsula Landfill, a nearby sanitary facility, and convert the recovered natural gas into CNG to power their fleet. Trucks will begin and end the day at the site. "It's really sort of a perfect closed loop resulting in negative carbon impact," said Tim Flanagan, the district's assistant general manager.

"We are excited to partner with the Monterey Regional Waste Management District in this innovative and environmentally-advanced project," said Mary Boettcher, president of Trillium. "We congratulate the District in advancing their nationally recognized solid waste management and resource recovery efforts."

The new CNG station will feature time-fill posts to handle the district's 50 CNG refuse trucks today as well as a fast-fill dispenser that can be made available to other local City and County fleets. However, it will be expandable to accommodate up to 100 CNG vehicles as their fleet is fully converted.

Groundbreaking is scheduled in April with completion targeted for the end of July.

Forward-Looking Statements
This news release contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934. You can identify these statements by the fact that they do not relate strictly to historical or current facts and often include words such as "anticipate," "expect," "intend," and other similar words. Forward-looking statements are beyond the ability of Integrys Energy Group to control and, in many cases, Integrys Energy Group cannot predict what factors would cause actual results to differ materially from those indicated by forward-looking statements. Please see Integrys Energy Group's periodic reports filed with the Securities and Exchange Commission (including its 10-K and 10-Qs) for a listing of certain factors that could cause actual results to differ materially from those contained in forward-looking statements.

About Trillium CNG
Trillium CNG is a leading provider of CNG to fleets, and also offers complete facility design, construction, operation and maintenance services. Our focus is on fueling heavy-duty fleets that require high-performance solutions. Trillium CNG is a business unit of Integrys Energy Group Inc. (NYSE: TEG). For more information, visit www.TrilliumCNG.com.

About Integrys Energy Group, Inc.
Integrys Energy Group, Inc. is a diversified energy holding company with regulated natural gas and electric utility operations (serving customers in Illinois, Michigan, Minnesota and Wisconsin), an approximate 34 percent equity ownership interest in American Transmission Co. (a federally regulated electric transmission company) and non-regulated energy operations. For more information, visit www.integrysgroup.com.

About Monterey Regional Waste Management District
The Monterey Regional Waste Management District (MRWMD) is an award-winning 64-year-old California Special District, covering 853 square miles, representing nine member agencies and providing services to local and regional customers. Its mission is "To turn waste into Resources in the most cost effective and environmentally sound manner to benefit the community."

The MRWMD is an integrated waste management facility combining a Materials Recovery Facility, Household Hazardous Waste collection facility, landfill-gas-to-energy program, Last Chance Mercantile (LCM) reuse store, and public education and outreach. In January of 2012, MRWMD took another pioneering step forward in organics waste management by entering into an agreement with Zero Waste Energy (ZWE) to permit, construct and operate a Dry Fermentation "SmartFerm" Anaerobic Digestion (AD) composting system to manage food scraps. The partnership with Trillium CNG to fuel local collection truck fleets with renewable energy marks another milestone in the District's long history of serving the Monterey Bay region.