Dell has announced what it's describing as "aggressive" plans to further reduce the energy consumption of its products, avoid millions of tons of CO2 emissions worldwide and drive "unprecedented customer value".

The company's laptops and desktops are being designed to consume up to 25% less energy by 2010 relative to systems offered today.

With a dig towards HP's green credentials Dell says the energy efficiency of Dell OptiPlex desktops has improved nearly 50% since 2005, while Latitude laptops have improved 16% since 2006.

"Our customers are inspiring us to address the environmental challenges facing our planet", said Albert Esser, vice president of power and infrastructure solutions, Dell Product Group.

"We've listened to them and are designing next-generation technologies that dramatically reduce energy consumption, drive meaningful cost savings and help achieve a low-carbon economy. It's the right thing for our business, our customers and shared environment."

Dell plans to achieve its energy-efficiency goals by continuing to integrate Energy Smart technologies, including circuit designs, fans and power management features.

The company says it is also working closely with its supplier base to further develop and deliver energy-efficient components, including chip sets, power supplies and memory.