CleanTech Biofuels

CleanTech Biofuels to Begin Producing Renewable Electricity

ST. LOUIS, MO--(Marketwire - July 28, 2008) - CleanTech Biofuels, Inc. (OTCBB: CLTH) intends to use its proprietary technology at a commercial site in Chicago, Illinois to produce cellulosic biomass as solid fuel for the production of electricity. Beginning commercial production of biomass for electricity will allow CleanTech to develop significant revenue more quickly than originally anticipated.

Tests on the feasibility of using the biomass from CleanTech's processes for electricity production indicated that the energy value (or Btu value) is approximately 75 percent that of coal. Testing also indicates that the biomass has substantially less pollutants in emissions from combustion than other refuse derived fuels and coal.

CleanTech believes that this approach will dramatically lower the cost of its first commercial ethanol plant. By using the infrastructure it constructs for electricity production to support cellulosic ethanol production at the same site in the future, CleanTech believes that it will be able to incrementally increase the amount of MSW processed at the site daily to support both operations.

"We look at the application of biomass co-fired with coal as the low hanging fruit that can be done commercially right now," said Ed Hennessey, CleanTech CEO. "Coal prices have increased dramatically in recent years and that has increased the value of the energy content in our biomass." Hennessey further added, "We are looking to develop a plant in Chicago using the biomass as solid fuel to produce electricity with traditional debt and bond financing to fund a significant part of the development costs. When our cellulosic ethanol conversion technology is ready for commercial implementation, we hope to use the infrastructure at the existing plant to add a cellulosic conversion plant to the same site."

About CleanTech Biofuels, Inc.
CleanTech Biofuels, Inc. is a development stage company with technology that the company believes is capable of converting municipal solid waste into ethanol and other energy products. By using the existing infrastructure for municipal solid waste collection and disposal to collect biomass at low or possibly negative feedstock cost, the Company expects to achieve profitability quickly relative to other ethanol and alternative energy producers who must develop their infrastructure to collect and transport more expensive feedstocks such as sugar cane, corn or even switchgrass, wood waste, or corn stover.

Safe Harbor:
This release may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. The risks and uncertainties that may affect the operations, performance development, and results of the Company's business include but are not limited to fluctuations in financial results, availability and customer acceptance of our products and services, the impact of competitive products, services and pricing, general market trends and conditions,
and other risks detailed in the Company's SEC reports. 314.802.8670

Investor Contact:
Lippert Heilshorn& Associates, Inc.
Amy Gibbons/Jody Burfening