A protocol for quantifying the carbon reductions achieved through the provision of low or zero carbon ICT services. - Paul Steenhof; Chris Weber; Martin Brooks; John Spence; Randall Robinson; Rob Simmonds; Cameron Kiddle; David Aikema; Michel Savoie; Bobby Ho; Mathieu Lemay; Jonathan Fung; et al. (Sustain. Comput. Informatics Syst., 2012)