Computers and office equipment such as printers, photocopiers and fax machines can typically contribute between 30 and 55 per cent of tenant energy use. When evaluating purchase options companies need to consider not just purchase price, but day to day running costs. With the rapid rate of development in equipment, efficiency of most items has at least doubled in the last ten years. Choosing or leasing the right office equipment will have significant impacts on your energy use and costs. Audits, energy ratings and staff behaviours will all help your organisation make efficient choices.