Contact:  Kathy Montgomery, VP of Marketing & Strategic Design
678.226.0683 or kmontgomery@prenova.com

ATLANTA, April 24, 2008 - Prenova is pleased to announce that it has expanded its relationship with U.S. Cellular to assist the company with managing its utility base given U.S. Cellular’s rapid expansion in subscriber base and location footprint. Through its Utility Due Diligence and Deposit Recovery solutions, Prenova will work on U.S. Cellular’s behalf with utility suppliers to coordinate activities and requirements surrounding facility openings, closings, and other time-sensitive issues that affect energy-related spend. Furthermore, Prenova will research all deposit recovery issues on behalf of U.S. Cellular and ensure that the customer is in a position to capture any credits for which it is eligible. Prenova will complete all documentation required, submit for approval, and follow through with participating utilities to ensure that deposits are applied correctly.

Since 2005, Prenova has provided U.S. Cellular with its Rate and Tariff Optimization and Price Risk Management in regulated and deregulated energy markets, respectively. Through the Rate and Tariff Optimization solution, Prenova identifies the best possible regulated commodity rate for each relevant site in U.S. Cellular’s portfolio. Prenova’s Price Risk Management solution addresses the optimization of cost and risk in procuring electric and gas energy for the enterprise. Price Risk Management includes the continuous review of market conditions to assess and determine both the potential near-term and future impact on financial outlooks these market changes create for the customer’s energy supply portfolio in terms of potential savings or risks. Price discovery is a critical part of this solution. Prenova then develops strategies and plans for managing price and risk, recommends specific actions to the customer, executes the agreed actions, and performs Quality Assurance to ensure that changes are accurately implemented. “We have been extremely pleased with the energy-related savings that Prenova has driven over the years by securing us the best price for energy – especially in these volatile times,” said Stephen Gondek, the Commodity Manager for U.S. Cellular. “Prenova proactively came forward with some significant savings that they had identified by reviewing our utility data, and we will be able to recoup the savings they identified in a very short period of time. We are also excited about the possibilities for carbon emissions reductions as we investigate improved management of our energy demand with Prenova.”

Prenova and U.S. Cellular are exploring demand side management through the delivery of proactive control and sustainable cost reductions via a pilot in select U.S. Cellular locations. This is to be achieved through more efficient management of energy-related assets. This solution is enabled through an Energy Management System (EMS). Over time, customers’ established parameters often become altered. Prenova automatically identifies and then resets the EMS and connected assets back to the customer’s original parameters. Prenova also proactively and regularly exercises customer assets through remote diagnostic routines. Prenova analyzes the data retrieved to identify early signs of asset degradation. Up to 70% of identified issues can be corrected remotely, then Remote Continuous Commissioning is applied to ensure those performance gains are sustained.

“Our solution is delivered remotely: while we’re reducing usage for a customer, we aren’t effectively increasing usage on our side, which can cancel out many of the benefits,” said Michael Nark, President and CEO of Prenova. “No incremental greenhouse gases are expended. U.S. Cellular is working diligently to combine economic success with environmental protection by focusing on and driving down their total energy spend.”

About U.S. Cellular U.S. Cellular is the nation's sixth-largest wireless service carrier, providing wireless service to six million customers in 26 states. The Chicago-based company employs 8,000 associates and operates on a customer satisfaction strategy, meeting customer needs by providing a comprehensive range of wireless products and services, superior customer support, and a high-quality network.

About Prenova

Founded in 1997 and headquartered in Marietta, GA, Prenova’s clean energy management solutions deliver economical, reliable, environmentally friendly energy to match our customers’ needs. Prenova’s unique delivery platform enables the company to produce immediate, enhanced returns through reductions in both direct (price, tariff, utility payments) and indirect (usage, assets, maintenance) energy spend. The result is an unrivaled level of hard dollar savings plus a sustained reduction in energy consumption and carbon gas emissions, all while improving the reliability of business operations.

Prenova is a premier energy conservator - our solutions maximize energy efficiencies in our customers’ operations.  We link our customers’ facilities together with our technology and service solutions enabling customers to do more with less – the ultimate in conservation efforts. Prenova’s focus on optimizing assets and equipment yields a high impact outcome: significant reduction of energy costs, increased reliability of energy-related systems critical to business operations, and a dramatic reduction in harmful emissions. We drive asset efficiency to revolutionize energy conservation.
The value that Prenova creates for its customers is significant to their bottom line, and includes:

• Reduce energy consumption by 10-20%
• Reduce the price paid for energy by 2%-5%
• Reduce unplanned maintenance service call-outs by up to 40%
• Increase asset life by up to 30%

Prenova manages billions in annual energy expenditures across hundreds of thousands of customer locations across North America.  Some organizations that rely on Prenova include Brinker, Coldwater Creek, Costco, Crate & Barrel, Dollar Tree, Dunham’s Sports, Eddie Bauer, Famous Footwear, Home Depot, Mark’s Work Wearhouse, Quiznos, Seneca Foods, 24 Hour Fitness, U.S. Cellular and West Marine.

For more information, please visit www.prenova.com.