MARLBOROUGH, Mass., July 9, 2008 —- Netezza Corporation (NYSE Arca: NZ), the global leader in data warehouse appliances, today announced that Midwest Independent Transmission System Operator, Inc. (Midwest ISO), has selected Netezza to run power grid reliability and energy market performance analytics and usage statistics. This will facilitate enhanced customer understanding, market transparency and more streamlined operations in the recently deregulated and increasingly competitive electric utility industry.

With data volumes growing at a rate of 400 GB per month, performance on the existing data warehouse was suffering and data center space was shrinking dramatically. As the Data Management group at the Midwest ISO embarked on a strategic project to provide a platform that would support near-real-time electrical grid and market analytics to both internal and external customers, the performance of the current data warehouse solution became an obstacle. While looking at potential solutions, the ability of Netezza to deliver a platform that is both “data-center friendly” and able to provide the level of performance required for near-real-time analytics were key considerations in the Midwest ISO decision.

Netezza, a member of The Green Grid consortium, will significantly reduce Midwest ISO’s data center footprint and energy requirements, eliminating the need to move or expand the current data warehouse while providing a significant performance improvement over the existing solution.

“As more and more companies look for ways they can reduce costs and save data center space, while also helping the environment, Netezza stands out as a data warehouse solution that allows organizations to meet their strategic initiatives on all fronts,” said Jim Baum, Netezza’s president and COO. “Our unique architecture leverages energy-efficient, high-performance processors and other components that make us a great fit for organizations committed to ‘going green,’ while the performance and simplicity of our data warehouse appliance provides customers with significant competitive and operational advantage.”

Netezza systems are built specifically to analyze terabytes of detailed data significantly faster than existing data warehouse options, at a much lower total cost of ownership. They store, filter and process terabytes of records within a single unit, analyzing only the relevant information for each query. Netezza has placed the CPU power next to the data, allowing its systems to speed through processes that would occupy most data warehouse systems for hours, or even days, thereby enabling dramatic increases in productivity across the organization.

About Midwest Independent Transmission System Operator, Inc. The Midwest ISO ensures reliable operation of, and equal access to, 93,600 miles of interconnected, high-voltage power lines in 15 U.S. states and the Canadian province of Manitoba. The Midwest ISO manages one of the world's largest energy markets, clearing nearly $3 billion in energy transactions monthly. The Midwest ISO was approved as the nation's first regional transmission organization (RTO) in 2001. The non-profit 501(C)(4) organization is governed by an independent Board of Directors, and is headquartered in Carmel, Indiana with operations centers in Carmel and St. Paul, Minnesota. Membership in the organization is voluntary. For more information, visit www.midwestmarket.org.

About Netezza

Netezza is the global leader in data warehouse appliances that dramatically simplify high-performance analytics for business users across the extended enterprise, delivering significant competitive and operational advantage in today’s information-intensive marketplaces. The Netezza Performance Server® (NPS®) family of streaming analytic™ appliances brings appliance simplicity to a broad range of complex data warehouse and analytic challenges. Customers who have realized the benefits of Netezza appliances include Ahold, Amazon.com, CNET Networks, Debenhams, Department of Veterans Affairs, Epsilon, Nationwide, Neiman Marcus, Orange UK, Premier, Inc., Ross Stores, Ryder System, Inc., The Carphone Warehouse, Telekom Slovenia and Virgin Media. Based in Marlborough, Mass., Netezza has offices in Washington, DC, the United Kingdom, Canada and Asia Pacific. For more information about Netezza, please visit www.netezza.com.