Biodiesel Challenge Extends to Engine Performance

WATERLOO, Wis. – August 14, 2006 – Sponsors of Wisconsin’s inaugural Biodiesel Challenge tractor pulling award are extending their support for biofuels to a study of engine performance in competitive situations.

North Prairie Productions, LLC, the company planning a large-scale, commercial biodiesel plant in south-central Wisconsin, initiated the Biodiesel Challenge this year in conjunction with the Wisconsin Tractor Pullers Association (WTPA). Super Farm tractor pullers compete for a special award based on season-long point accumulations and participating tractors are identified by a special decal indicating that they are “Powered by biodiesel provided by North Prairie Productions.”

A new dimension of the Biodiesel Challenge pairs diesel-engine specialists from the Madison Area Technical College with WTPA Tractor pullers to measure, document and quantify the performance of engines burning biodiesel. Because biodiesel has higher cetane levels than its petroleum counterpart, this season’s competitors are being urged to use blends containing no more than 5 percent biodiesel in order to comply with NTPA/WTPA fuel standards and testing protocols.

“It is a widely recognized fact that biodiesel contains higher cetane levels than its petroleum counterpart, but nobody’s actually quantified those levels for the different biodiesel blends,” explains Jeff Pieterick, vice president of North Prairie Productions. “It’s our intention to document cetane levels so we can advise pullers about the most beneficial blend of biodiesel to burn in competition.”

North Prairie Productions also is helping coordinate an off-season effort to revisit NTPA fuel testing standards so that competitors in 2007 will be able to “legally” use maximum levels of biodiesel fuel. Diesel-engine specialists and chemists from Madison Area Technical College and the University of Wisconsin are working with pullers to study performance blending of the two fuels. They plan to work with the NTPA to help re-write fuel-testing standards that should increase availability of biodiesel as a performance fuel to be used by competitors.

As a pure fuel, biodiesel contains no petroleum but it is typically blended with petroleum diesel to create biodiesel blends from five percent (B-5) to 20 percent (B-20). Biodiesel significantly improves the lubricity of petroleum diesel fuel at levels as low as 2 percent (B2) and therefore is a preferred addition to petroleum-based, ultra-low sulfur fuels.

Biodiesel is a domestically produced, renewable fuel made from animal fats and vegetable oils, such as soybeans that is safe for compression-ignition, diesel engine without modification. Made primarily from soybeans in, it is a cleaner-burning diesel fuel that also is simple to use, biodegradable, nontoxic and essentially free of sulfur and aromatics.

North Prairie Productions, LLC, is based in Waterloo, Wisconsin, with intentions of building a large-scale, commercial biodiesel plant in the south-central part of the state. Additional company information and background on biodiesel is available on the company website at www.npnrg.com or by calling toll-free at 877-299-2435.

###

*******************************************
Notice Regarding Forward-Looking Statements
This press release includes forward-looking statements. All statements regarding North Prairie Products, LLC’s expected operations, financing plans, business strategy, budgets, projected capital expenditures, products and services, competitive positions, growth opportunities, plans and objectives of management for future operations, as well as statements that include words such as “anticipate,” “if,” “believe,” “plan,” “estimate,” “expect,” “intend,” “may,” “could,” “should,” “will” and other similar expressions are forward-looking statements. Please recognize that all forward-looking statements involve a number of risks and uncertainties that could cause our actual results to differ materially from the estimates, expectations, beliefs, intentions, projections and strategies reflected in or suggested by the forward-looking statements. NPP disclaims any intention or obligation to update any forward-looking statements as a result of developments occurring after the date of this press release.