Press Release November 18, 2005

MINERGY REACHES MAJOR MILESTONE: 2 MILLION TONS
OF SLUDGE RECYCLED INTO GLASS AGGREGATE
— Next-generation vitrification technology offers broader applications —

(Neenah, Wis.) — Minergy Corp. announced that it has recently surpassed the milestone of processing 2 million tons of paper mill sludge at its Fox Valley Glass Aggregate Plant (FVGAP) in Neenah, Wis. Using patented vitrification (melting) technology, this first-of-its-kind facility, with a daily capacity of 1,300 tons per day, began commercial operation in 1998. In addition to recycling paper mill sludge into a commercial glass aggregate product, FVGAP is a combined heat and power (CHP) facility that produces process steam to meet the needs of three adjacent paper mills and produces electricity that is sold to a local utility.

“This technology has solved a significant sludge disposal problem for area paper mills, as well as provides the local communities with other environmental benefits,” says Bob Paulson, Manager of Business Development. “Recycling this material has saved more than 57 acres of county landfill space and eliminated more than 2.5 million local truck miles. Put into perspective, if one were to pile this amount of material on Lambeau Field, it would be more than 1,000 feet tall.”

Minergy Corporation specializes in the vitrification (i.e., melting) of high-volume wastes such as sludges, biosolids, and contaminated sediments and soils, into an inert construction glass called glass aggregate. FVGAP has produced more than 300,000 tons of glass aggregate that has been completely consumed in local markets. Minergy has received a Grant of Exemption from the Wisconsin Department of Natural Resources that allows the glass aggregate to be beneficially reused in building foundations, concrete, blasting media, roofing shingles and asphalt pavement.

“The milestone at FVGAP demonstrates a successful track record for our first-generation technology,” says Paulson. “Based on potential customer interest since FVGAP was operating, we have focused on developing the next-generation vitrification technology.”

Current customer interest lies primarily in processing other high-volume waste materials and in on-site applications to address both disposal issues and escalating energy costs, according to Paulson. In response to this demand, the company has developed GlassPack®, a compact vitrification process that provides efficient on-site processing of waste materials with a patented closed-loop process that has emissions that are unmatched by conventional combustion technology.

Minergy’s Vitrification Technology Center houses a small commercial-scale GlassPack® unit to demonstrate the technology’s application to new materials. To date, the GlassPack® unit has successfully processed high-volume wastes, such as biosolids from municipal sewage treatment plants, paper mill sludge, and renewable fuels such as wheat midds and distillers grain, in efforts to help customers offset natural gas costs. The first commercial GlassPack® application, to vitrify municipal biosolids into glass aggregate, is currently under construction and expected to be placed into service in 2006.

Minergy’s Fox Valley Glass Aggregate Plant has been recognized by the following organizations for recycling innovation: Wisconsin Manufacturers & Commerce Assn., Wisconsin Department of Natural Resources, Wisconsin Recycling Markets Board, and Renew-Wisconsin.

Minergy Corp. was established in 1993 as a subsidiary of Wisconsin Energy Corp. For more information, visit www.minergy.com.

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