Navistar, Inc. (NYSE: NAV) subsidiary IC Bus of Oklahoma’s Tulsa bus plant will receive a check for $142,498.92 from Public Service Company of Oklahoma (PSO) for retrofitting the company’s Tulsa facility with high-efficiency lighting.

IC Bus invested more than $420,000 for lighting retrofits that included the replacement of more than 1,000 metal halide fixtures (ranging from 250 to 1,000 watts) with the same number of new, high-efficiency T-5 fixtures.

It’s estimated the new energy efficient lighting at the IC Bus plant will save more than 1.5 million kilowatt-hours (kWh) of electricity per year and will lower the facility’s electric bill by approximately $75,000 a year.

The lighting installation qualifies for the incentive payment under PSO’s Business Solutions program, which helps owners of commercial and industrial facilities conserve energy and save money by identifying and implementing high-value energy efficiency improvement projects. Incentives are paid for qualifying projects based on the calculated energy savings resulting from the improvements.

"We are always looking for ways to improve our business and operations at the plant," said Greg Hutchison, manager of IC Bus’ Tulsa plant. "PSO’s Solutions Program, combined with the ongoing cost savings, validates our investment in energy efficiency and helps us maintain a competitive edge."

PSO Consumer Programs Coordinator Kerry Rowland said that the Business Solutions program has proven to be a valuable tool in helping PSO-served businesses reduce electrical demand and hold down costs.

"We identified a real need for an energy efficiency program that specifically targets business facilities, especially as budgets are spread thin," said Rowland. "By partnering with IC Bus to reduce energy costs, their valuable resources can be used for other needs."

About PSO

PSO, a unit of American Electric Power (NYSE: AEP), is an electric utility company serving more than 530,000 customers in eastern and southwestern Oklahoma. With headquarters in Tulsa, PSO has 4,321 megawatts of generating capacity and provides electricity to 230 cities and towns across a service area encompassing 30,000 square miles. News releases and other information about PSO can be found on the World Wide Web at www.PSOklahoma.com.

About IC Bus

IC Bus of Oklahoma, LLC. Is an indirect wholly-owned subsidiary of Navistar, Inc. The nation’s largest integrated manufacturer of school buses, IC Bus is a global leader in passenger protection, chassis design, engines and ergonomics. The company is also a producer of commercial buses. All IC Bus™ buses are sold, serviced and supported through a renowned dealer network that offers an integrated customer program encompassing parts, training and service. Additional information is available at www.icbus.com.