Yes, and the main way to achieve greener web design is to make more efficient websites to minimize the energy needed to serve pages. Efficient code, optimized assets, and intuitive navigation all contribute to less energy used on the site’s server. It’s worth it to look for green hosts, or to estimate your power usage and offset the energy your site requires with carbon credits yourself. The dream is for the major CDNs to go fully renewable and to use them to serve pre-rendered, serverless html.
FYI
Cast Iron Design is now The Office of Ordinary Things. We relocated from Boulder to San Francisco, but otherwise we’re pretty much the same people doing the same things, just a bit more hardcore.