Externus have been in business since 2004 and have been focused on green issues and IT efficiency since start-up. We have worked with some of the largest companies in the IT sector helpng them improve not only how they work but also their impact on the environment. Our Consultants have many years experience in specifying, implementing and running of data centres, with a specific focus on cost management through conservative energy consumption. We are business minded, we understand and have experience in the need to balance the ethical issues with those of reliability, availability and importantly cost. Our holistic approach addresses all aspects of Green IT including the data centre, the office environment, working practices, legislation, certification and energy supply.