CoSN's web-based Energy Usage Calculator provides a quick approach for estimating annual kilowatt hours and related cost for computer use by K-12 users (by group) and the related datacenter infrastructure.
Run the web-based CoSN Energy Usage Calculator
An Excel version of the CoSN Energy Usage Calculator is also available if you prefer to download the calculator as an Excel workbook on your computer. If you choose to modify the calculator, no password is required to unprotect the protected cells. If you feel that any modifications will be useful to others, please let us know.
In addition to the CoSN Energy Usage Calculator, Becta (The British government agency leading the national drive to ensure the effective and innovative use of technology throughout learning) has prepared a simple comparison tool to help your school compare the energy required by potential purchases of ICT and check the consumption of existing equipment. The data will help schools maximise cost savings ( in British £) while working towards reducing the associated carbon impact of ICT use.