Green Web Engineering - A Set of Principles to Support the Development and Operation of "Green" Websites and their Utilization during a Website's Life Cycle

The power consumption of ICT and Internet is still increasing. To date, it is not clear if the energy savings through ICT overbalance the energy consumption by ICT, or not. In either case, it is suggestive to enforce the energy efficiency of the Web. In our paper, we present a set of 12 principles, which help e.g. to reduce the net load by caching or compressing. In order to classify our suggestions we group them by three main roles in Web Engineering. Additionally, we recommend using data centres which utilize “classic” Green IT.