Is the hosting located as close as possible to the core user base or use a CDN?
Transmission of data around the world consumes a lot of energy, and the further the data has to travel, the more energy is consumed.
Always select a data center as close to the core user base as possible. For web projects that have an international user base, using a content delivery network (CDN) helps to reduce the distance that large files travel through networks to reach each user, and thus reduces energy consumption.
Remember that although CDN’s can help reduce energy use, they are also data centers, so be sure to specify a provider that is committed to using renewable energy and has a strong environmental policy.