Acuity Brands Extends Use of Zilliant's Price Management Software; Additional Investment Made After Initial Deployment Delivers Compelling Business Value.

AUSTIN, Texas -- Zilliant, the leading provider of data-driven price management applications, today announced Acuity Brands Lighting, a division of Acuity Brands, Inc. (NYSE:AYI), has expanded their investment in the Zilliant Precision Pricing Suite (ZPPS), purchasing two additional software modules, ZPPS Optimization and ZPPS Deal Manager, to augment their existing deployment of ZPPS Analytics.

Acuity Brands Lighting, well-recognized for its superior products and customer service, is the leading manufacturer of commercial, industrial, institutional and residential lighting fixtures in North America.

Acuity deployed ZPPS Analytics in 2004 to analyze revenue, price and margin data, which enabled robust price and margin analysis, providing rich, actionable insight into profit improvement opportunities. In addition to these business benefits, the Analytics deployment produced high-quality data to accelerate and enhance the impact of ZPPS Optimization and ZPPS Deal Manager. The combination of ZPPS Optimization, Deal Manager and Analytics will further provide Acuity with industry-leading capabilities to manage pricing.

"ZPPS Analytics delivered significant business value to us over the last several years. Deploying Zilliant's additional pricing applications will enable us to take full advantage of the entire suite to achieve consistent price management, while improving financial performance," said Pat Quinn, VP, Information Systems and Technology of Acuity Brands Lighting. "Their science-based technology, pricing expertise and integration capabilities earned Zilliant an important position in our mission-critical business infrastructure."

Acuity Brands' business case for deploying pricing software was based on achieving measurable increases in margin through intense market-based price management. Zilliant was selected because it demonstrated the capabilities, expertise and commitment to helping Acuity Brands meet these financial goals.

"Zilliant delivered technology that enhances our price management and execution capabilities," said Jerry Quick, CFO and EVP, Acuity Brands Lighting. "The initial return on investment has been strong and measurable and we are confident this additional investment in the Zilliant footprint will provide equally compelling returns."

"As a market leader in the building products industry, Acuity Brands' expanding use of our data-driven pricing applications is a strong endorsement," said Greg Peters, Zilliant's CEO. "They have set a high standard for pricing excellence in the industry."

About Zilliant

Zilliant is the leading provider of data-driven price management solutions that enable our customers to fully exploit their enterprise transactional history to improve price setting and execution. Zilliant's Precision Pricing Suite combines proprietary price segmentation and optimization science with easy-to-use business applications to help customers determine and negotiate the best pricing for every sales transaction. Greater price differentiation and smarter price strategies have helped Zilliant's customers increase profits by tens of millions of dollars. Headquartered in Austin, Texas, Zilliant is a privately held company. Investors include Austin Ventures, Cardinal Ventures, JP Morgan Partners, and Trellis Partners. For more information contact Zilliant at 877-893-1085 or visit www.zilliant.com.

About Acuity Brands Lighting

Acuity Brands, Inc., with fiscal year 2005 net sales of approximately $2.2 billion, is comprised of Acuity Brands Lighting and Acuity Specialty Products. Acuity Brands Lighting is one of the world's leading providers of lighting fixtures and includes brands such as Lithonia Lighting(R), Holophane(R), Peerless(R), Hydrel(R), American Electric Lighting(R), and Gotham(R). Headquartered in Atlanta, Georgia, Acuity Brands employs approximately 10,000 people and has operations throughout North America and in Europe and Asia.