IPCC Fourth Assessment Report: Climate Change 2007
Climate Change 2007: Working Group III: Mitigation of Climate Change
Figure 2.3

Figure 2.3 : Technology development cycle and its main driving forces. Note that important overlaps and feedbacks exist between the stylized technology life-cycle phases illustrated here and therefore the illustration does not suggest a ‘linear’ model of innovation.

Source: Adapted from Foxon (2003) and Grubb (2005).